4,470 results match your criteria Hyperopia and Presbyopia Conductive Keratoplasty


[Glaucoma and nanophthalmos].

Ophthalmologe 2018 Dec 14. Epub 2018 Dec 14.

Zentrum für Augenheilkunde, Uniklinik Köln, Joseph-Stelzmann Str. 9, 50931, Köln, Deutschland.

The term nanophthalmos refers to a clinically small eye that appears morphologically normal. A nanophthalmos is characterized by hyperopia but can also be associated with various secondary pathologies, such as angle-closure glaucoma. In particular, the perioperative risks associated with a nanophthalmic eye necessitate examination of the anatomical characteristics, which can result from the disproportional size of intraocular tissues despite structural normality. Read More

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December 2018

Outcomes for Hyperopic LASIK With the MEL 90 Excimer Laser.

J Refract Surg 2018 Dec;34(12):799-808

Purpose: To report the outcomes of laser in situ keratomileusis (LASIK) for hyperopia using the Triple-A ablation profile with the MEL 90 excimer laser (Carl Zeiss Meditec, Jena, Germany).

Methods: This retrospective analysis included 1,383 eyes treated by LASIK for hyperopia using the Triple-A ablation profile with the MEL 90 at London Vision Clinic, London, United Kingdom, between September 2013 and December 2016. Inclusion criteria were attempted hyperopic correction of +0. Read More

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December 2018

[Wavefront and accommodation parameters under different conditions of correction in myopia and hyperopia].

Vestn Oftalmol 2018 ;134(5):15-20

Helmholtz Moscow Research Institute of Eye Diseases, 14/19 Sadovaya-Chernogryazskaya St., Moscow, Russian Federation, 105062.

Purpose: To compare the wavefront and accommodation parameters without correction and in soft contact lenses (SCL) in natural and cycloplegic conditions in eyes with myopia and hyperopia.

Material And Methods: A total of 142 myopic (mean -5.6±1. Read More

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January 2018
2 Reads

The long-term effects of gene therapy in a novel mouse model of human MFRP-associated retinopathy.

Hum Gene Ther 2018 Nov 30. Epub 2018 Nov 30.

Shiley Eye Institute, Ophthalmology, University of California, San Diego, United States ;

Patients harboring homozygous c.498_499insC mutations in MFRP demonstrate hyperopia, microphthalmia, retinitis pigmentosa, retinal pigment epithelial (RPE) atrophy, variable degrees of foveal edema and optic disc drusen. The disease phenotype is variable however, with some patients maintaining good central vision and cone function till late in the disease. Read More

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November 2018

Refractive errors in an elderly rural Japanese population: The Kumejima study.

PLoS One 2018 15;13(11):e0207180. Epub 2018 Nov 15.

Kanto Central Hospital of the Mutual Aid Association of Public School Teachers, Setagaya, Tokyo, Japan.

The prevalence of refractive errors, which closely relates to visual function difficulties, several ocular disorders, and decreased quality of life, varies among countries and populations. One of the highest prevalence of myopia (spherical equivalent [SE] < -0.5 diopters [D], 41. Read More

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November 2018
5 Reads

Evaluation of Big Bubble Technique for Deep Anterior Lamellar Keratoplasty in Patients With Radial Keratotomy.

Cornea 2018 Nov 13. Epub 2018 Nov 13.

Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada.

Purpose: To report the outcome of deep anterior lamellar keratoplasty (DALK) and success rates of the big-bubble (BB) technique or manual dissection after a failed use of the BB technique in eyes that underwent prior radial keratotomy (RK).

Methods: A retrospective chart review of patients who underwent DALK after RK at Toronto Western Hospital, Canada, between 1999 and 2017 was performed. Demographic characteristics, success rates of the BB technique and manual dissection, intraoperative and postoperative complications, and best spectacle-corrected visual acuity before and after corneal transplant were analyzed. Read More

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November 2018
7 Reads

Ophthalmic manifestations in patients with Leigh syndrome, French Canadian type.

Ophthalmic Genet 2018 Dec 14;39(6):725-727. Epub 2018 Nov 14.

a Department of Ophthalmology , Centre Hospitalier Universitaire de Sherbrooke , Sherbrooke , Quebec , Canada.

Background: Leigh syndrome, French Canadian type is a rare neurodegenerative disease. To our knowledge, there have been no studies based on ocular findings published for this disease. The purpose of this study is to describe ophthalmic findings in these patients. Read More

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December 2018
8 Reads

Commonly Held Beliefs About Myopia That Lack a Robust Evidence Base.

Eye Contact Lens 2018 Nov 7. Epub 2018 Nov 7.

R&D, Johnson & Johnson Vision Care, Inc, Jacksonville, FL.

Purpose: To subject a number of commonly held beliefs or areas of confusion in the myopia field to scientific scrutiny.

Method: A collection of statements about myopia are provided with references to demonstrate that a section of the research or clinical community supports the statement. The topics under discussion are reviewed critically with reference to the literature. Read More

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November 2018
8 Reads
1.680 Impact Factor

Profile, knowledge, and attitude of contact lens users regarding contact lens wear in Ghana.

Cont Lens Anterior Eye 2018 Nov 8. Epub 2018 Nov 8.

Dashen Opticians, North Ridge Branch, Accra, Ghana.

Background: Contact lenses are gaining popularity in developing countries as an alternative to spectacles for the correction of refractive errors. It is needful, therefore, to generate information to guide the mode of practice, and assist the industry in developing products for the increasing contact-lenses-user population. The purpose of this study was to identify the demographic profile, as well as the knowledge, attitude to wear and care regimen of wearers of contact lenses in Ghana. Read More

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November 2018
4 Reads
2.000 Impact Factor

Prevalence and causes of blindness and vision impairment: magnitude, temporal trends and projections in South and Central Asia.

Br J Ophthalmol 2018 Nov 8. Epub 2018 Nov 8.

Vision and Eye Research Unit, School of Medicine, Anglia Ruskin University, Cambridge, UK

Background: To assess prevalence and causes of vision loss in Central and South Asia.

Methods: A systematic review of medical literature assessed the prevalence of blindness (presenting visual acuity<3/60 in the better eye), moderate and severe vision impairment (MSVI; presenting visual acuity <6/18 but ≥3/60) and mild vision impairment (MVI; presenting visual acuity <6/12 and ≥6/18) in Central and South Asia for 1990, 2010, 2015 and 2020.

Results: In Central and South Asia combined, age-standardised prevalences of blindness, MSVI and MVI in 2015 were for men and women aged 50+years, 3. Read More

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November 2018
6 Reads
2.980 Impact Factor

[Transepithelial photorefractive keratectomy : Results and clinical experiences].

Ophthalmologe 2018 Nov 7. Epub 2018 Nov 7.

Aurelios Augenlaserzentrum Recklinghausen GmbH, Erbruch 34-36, 45657, Recklinghausen, Deutschland.

Objective: To analyze and assess the refractive outcome after transepithelial photorefractive keratectomy (TransPRK).

Material And Methods: The treatment was performed with the AMARIS 1050RS laser (SCHWIND eye-tech-solutions GmbH, Kleinostheim, Germany). The method used an aspheric, aberration-neutral ablation profile and a standardized epithelial tissue removal of 55 µm in the center and 65 µm at a radius of 4 mm as well as SmartPulse technology. Read More

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November 2018

Evaluation of the Relationship Between Age-related Macular Degeneration and Refractive Error, Socio-demographic Features, and Biochemical Variables in a Turkish Population.

Turk J Ophthalmol 2018 Oct 31;48(5):238-244. Epub 2018 Oct 31.

Ataşehir Modern Medical Center, Ophthalmology Clinic, İstanbul, Turkey.

Objectives: To investigate the relationship between age-related macular degeneration (AMD) and refractive error and axial length, as well as the socio-demographic characteristics and biochemical variables that may affect this relationship.

Materials And Methods: A total of 196 eyes of 98 patients over 50 years of age who were diagnosed with AMD at our clinic were included in this cross-sectional study. Early and late AMD findings were categorized according to the age-related eye disease study grading scale. Read More

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October 2018

Comparison of the Visual Acuity and Refractive Error Using OPDIII and Subjective Findings in Visually Normal Subjects.

Eye Contact Lens 2018 Nov;44 Suppl 2:S302-S306

Noor Research Center for Ophthalmic Epidemiology (M.A.), Noor Eye Hospital, Tehran, Iran; Department of Optometry (E.J., A.M.), Iran University of Medical Sciences, Tehran, Iran; Refractive Errors Research Center (A.A.Y.), Mashhad University of Medical Sciences, Mashhad, Iran, Iran; and Department of Medical Surgical Nursing (M.K.), School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Purpose: To compare the visual acuity and refractive error using OPDIII and subjective findings in visually normal subjects.

Method: This study was performed on 75 participants (134 eyes) with an age range of 18 to 35 years. Visual acuity was evaluated using both subjective Snellen chart and OPDIII devices. Read More

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November 2018
1 Read

Myopia Growth Chart Based on a Population-Based Survey (KNHANES IV-V): A Novel Prediction Model of Myopic Progression in Childhood.

J Pediatr Ophthalmol Strabismus 2018 Oct 26:1-5. Epub 2018 Oct 26.

Purpose: To introduce a novel myopia growth chart based on a population-based survey for the prediction of myopic progression.

Methods: The study included 7,695 Korean participants aged 5 to 20 years from a population-based health survey (Korean National Health and Nutrition Examination Survey IV-V). The authors collected spherical equivalent (SE) data converted from noncycloplegic refraction data. Read More

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October 2018
8 Reads

The Underestimated Role of Refractive Error (Hyperopia, Myopia, and Astigmatism) and Strabismus in Children With ADHD.

J Atten Disord 2018 Oct 29:1087054718808599. Epub 2018 Oct 29.

1 Technische Universität Dresden, Germany.

Objective: To examine the association of refractive error (myopia, hyperopia, astigmatism) and strabismus with ADHD.

Method: Based on data from the large, representative, epidemiological sample of the German Health Interview and Examination Survey for Children and Adolescents (KiGGS) study ( N = 13,488), the associations of myopia, hyperopia, astigmatism, and strabismus with ADHD were examined, with and without consideration of other common ADHD risk factors.

Results: In single logistic regression models, all examined forms of refractive error and strabismus showed an association with ADHD. Read More

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October 2018

Refractive Error among Male Primary School Students in Jazan, Saudi Arabia: Prevalence and Associated Factors.

Open Ophthalmol J 2018 28;12:264-272. Epub 2018 Sep 28.

Department of Community Medicine, Faculty of Medicine, Jazan University, Jazan, Kingdom of Saudi Arabia.

Background: Refractive error is a common and serious eye disorder that affects more than 153 million people globally. The aim of this study was to estimate the prevalence and pattern of refractive error among male primary school children in Jazan region, Saudi Arabia.

Methods: A cross-sectional study was conducted among a randomly selected group of 395 students (aged 6-14 years) in Jazan region, Southwest Saudi Arabia. Read More

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September 2018
2 Reads

The Prevalence of Refractive Errors and Visual Impairment among School Children in Brčko District, Bosnia and Herzegovina.

Semin Ophthalmol 2018 26;33(7-8):858-868. Epub 2018 Oct 26.

a Department of Ophthalmology , University Clinical Center Tuzla , Tuzla , Bosnia and Herzegovina.

In this study we investigate the prevalence of refractive errors and visual impairment among primary school children in the urban population of Brčko District, Bosnia and Herzegovina. A cross-sectional study included 40 randomly selected classes of children aged 7-16 years attending five different primary schools in Brčko District. The examination included visual acuity testing, ocular motility evaluation, retinoscopy and autorefraction under cycloplegia, examination of the external eye, anterior segment, media and fundus. Read More

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November 2018
5 Reads

Lamina cribrosa thickness in children with hyperopic anisometropic amblyopia.

Authors:
Serkan Akkaya

Int J Ophthalmol 2018 18;11(10):1663-1667. Epub 2018 Oct 18.

Department of Ophthalmology, Kayseri Training and Research Hospital, Kayseri 38010, Turkey.

Aim: To determine lamina cribrosa thickness (LCT) in the optic nerve head region of the eyes in children with hyperopic anisometropic amblyopia and to compare this thickness with that of fellow eyes, hyperopic non-amblyopia, and age-matched controls.

Methods: Thirty-two patients (12.0±1. Read More

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October 2018
1 Read

Incidence and Clinical Characteristics of Post LASIK Ectasia: A Review of over 30,000 LASIK Cases.

Semin Ophthalmol 2018 25;33(7-8):869-877. Epub 2018 Oct 25.

a School of Medicine, University of Rijeka , Specialty Eye Hospital "Svjetlost" , Zagreb , Croatia.

Purpose: To report the incidence of postoperative ectasia after laser in situ keratomileusis (LASIK).

Methods: A retrospective case review of 30,167 eyes (16,732 patients) was conducted following LASIK between August 2007 and August 2015. The follow-up was between 2 and 8 years. Read More

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November 2018
9 Reads

[Development of keratophakia and new research advances in lenticule transplantation].

Authors:
X Ding Z Q Yu

Zhonghua Yan Ke Za Zhi 2018 Oct;54(10):792-796

Department of Ophthalmology, Eye & ENT Hospital of Fudan University, Shanghai 200031, China.

In the 1980s, a new treatment of aphakia and keratoconus with keratophakia thrived because of its simple, effective and reversible characteristics. However, due to the limited cornea resources and the unpredictability of long-term treatment effects, epikeratophakia has not been widely accepted. Refractive lenticule extraction is a type of corneal refractive surgery with minimal invasiveness, accuracy and good refractive stability and has got great clinical attention and promotion. Read More

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October 2018

Prevalence and Risk Factors of Amblyopia among Refractive Errors in an Eastern European Population.

Medicina (Kaunas) 2018 Mar 20;54(1). Epub 2018 Mar 20.

Clinic of Paediatric Surgery, Emergency Children's Hospital Louis Turcanu, 300011 Timisoara, Romania.

Amblyopia is the leading cause of visual impairment in children and adults and is very common during childhood. The aim of this study was to identify the prevalence and the risk factors of amblyopia in a pediatric population with refractive errors from an Eastern European country. A total of 1231 children aged 5⁻16 years, who had refractive errors and were examined from January to August 2017, were enrolled in a cross-sectional population-based study. Read More

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Esodeviation without correction for tapering hyperopia in refractive accommodative esotropia.

Can J Ophthalmol 2018 Oct 16;53(5):453-457. Epub 2018 Mar 16.

?>Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea; Department of Ophthalmology, Korea University Anam Hospital, Seoul, Republic of Korea. Electronic address:

Objective: To investigate clinical features for prescription of tapered hyperopia in patients with refractive accommodative esotropia (RAET).

Methods: The clinical features in patients with RAET who began tapering of hyperopia were analyzed. Within a range that can sustain corrected visual acuity and stereoacuity, patients were prescribed for tapered hyperopic correction by 0. Read More

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October 2018
1.300 Impact Factor

The role of corneo-scleral junction in soft contact lens fitting: Case report on nanophthalmos.

Cont Lens Anterior Eye 2018 Oct 15. Epub 2018 Oct 15.

Brien Holden Institute of Optometry and Vision Sciences, LV Prasad Eye Institute, Kallam Anji Reddy Campus, Road No-2, Banjara Hills, Hyderabad, 500034, India. Electronic address:

Background: Nanophthalmos is rare developmental ocular condition characterized by a small eye with short axial length, high hyperopia and high lens to eye volume ratio due to arrested development of eye ball as a result of scleral inelasticity.

Observations: A 33 year old woman who presented with a complaint of blurring of distance and near vision in both eyes since childhood came to LV Prasad Eye Institute on July 2017. Best corrected visual acuity was 20/60 using soft contact lens +23. Read More

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October 2018
5 Reads

Refractive error and visual impairment in Ireland schoolchildren.

Br J Ophthalmol 2018 Oct 12. Epub 2018 Oct 12.

School of Physics and Clinical and Optometric Sciences, Dublin Institute of Technology, Dublin, Ireland.

Aim: To report refractive error prevalence and visual impairment in Republic of Ireland (henceforth 'Ireland') schoolchildren.

Methods: The Ireland Eye Study examined 1626 participants (881 boys, 745 girls) in two age groups, 6-7 years (728) and 12-13 years (898), in Ireland between June 2016 and January 2018. Participating schools were selected by stratified random sampling, representing a mix of school type (primary/postprimary), location (urban/rural) and socioeconomic status (disadvantaged/advantaged). Read More

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October 2018

Photorefractive keratectomy for correcting residual refractive error following cataract surgery with premium intraocular lens implantation.

Taiwan J Ophthalmol 2018 Jul-Sep;8(3):149-158

Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taiwan.

Purpose: The aim of this study is to evaluate the effectiveness and predictability of photorefractive keratectomy (PRK) for correcting residual refractive error following cataract surgery with premium intraocular lens (IOL) implantation.

Methods: We conducted a retrospective review of the medical records of patients who received PRK for correcting residual hyperopia, myopia, and/or astigmatism due to unsatisfied uncorrected distance visual acuity (UDVA) after cataract extraction with implantation of aspheric, diffractive multifocal, or toric IOL from September 2011 to December 2017. Pre-cataract surgery, pre- and post-PRK data including UDVA, best-corrected distance visual acuity, and refractive status were analyzed. Read More

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October 2018
4 Reads

Validation of dynamic random dot stereotests in pediatric vision screening.

Graefes Arch Clin Exp Ophthalmol 2018 Oct 3. Epub 2018 Oct 3.

Institute of Physiology, University of Pécs, Medical School, Szigeti út 12., Pécs, 7624, Hungary.

Purpose: Stereo vision tests are widely used in the clinical practice for screening amblyopia and amblyogenic conditions. According to literature, none of these tests seems to be suitable to be used alone as a simple and reliable tool. There has been a growing interest in developing new types of stereo vision tests, with sufficient sensitivity to detect amblyopia. Read More

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October 2018
1 Read

Congenital Corneal Opacities Associated With Trisomy 8 Mosaicism Syndrome.

Cornea 2018 Dec;37(12):1596-1600

Department of Ophthalmology and Vision Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada.

Purpose: To describe the clinical, anterior segment optical coherence tomography (OCT) and histopathological features of 2 infants with congenital corneal opacities (CCOs) and undiagnosed trisomy 8 mosaicism syndrome (T8mS).

Methods: This is a retrospective case report documenting ocular and systemic findings, imaging, pathology and management of 2 patients with T8mS.

Results: An 11-month-old white male infant and a 4-week-old Asian female were initially seen for unilateral and bilateral CCOs, respectively. Read More

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December 2018
2 Reads

Refractive Errors in University Students in Central China: The Anyang University Students Eye Study.

Invest Ophthalmol Vis Sci 2018 Sep;59(11):4691-4700

Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, China.

Purpose: To assess the prevalence of refractive errors and associated factors in university students in urban areas of Anyang, Central China.

Methods: This is a cross-sectional university-based study of 16- to 26-year-old students in China. Subjects from two universities were invited to undergo a comprehensive eye examination. Read More

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September 2018
2 Reads
3.400 Impact Factor

Refractive Error in Chinese Preschool Children: The Shanghai Study.

Eye Contact Lens 2018 Oct 4. Epub 2018 Oct 4.

Department of Ophthalmology (T.L., X.Z.), Fudan University Jinshan Hospital, Shanghai, China; and Jinshan District Eye Disease Prevention and Treatment Center (X.Z., X.C., H.Q., Q.G.), Shanghai, China.

Purpose: To examine the prevalence of refractive error and some associated factors in Chinese preschool children.

Methods: The Jinshan District Eye Study was a school-based survey of eye health in a large sample of 4- to 6-year-olds attending kindergartens from May 2013 to December 2013 in Shanghai. Refractive error was measured using an autorefractor under noncycloplegic conditions. Read More

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October 2018
3 Reads

A Modified Small-Incision Lenticule Intrastromal Keratoplasty (sLIKE) for the Correction of High Hyperopia: A Description of a New Surgical Technique and Comparison to Lenticule Intrastromal Keratoplasty (LIKE).

Med Hypothesis Discov Innov Ophthalmol 2018 ;7(2):48-56

HDR Research Center, Hoopes Vision, 11820 S. State Street Suite #200, Draper, UT 84020, United States.

Patients with high hyperopia are generally confined to either spectacle wear or contact lenses as a primary means of refractive correction. For this patient population, the surgical corrective methods, such as hyperopic laser assisted in-situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) are imperfect options due to induction of higher-order aberrations, optical regression, and loss of best corrected distance visual acuity. Recently, there has been growing interest in lenticule implantation underneath a flap via lenticule intrastromal keratoplasty (LIKE) for high hyperopia correction (+3 diopters to +10 diopters). Read More

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January 2018
1 Read

Long-term development of refractive error in refractive, nonrefractive and partially accommodative esotropia.

PLoS One 2018 24;13(9):e0204396. Epub 2018 Sep 24.

Department of Pediatric Ophthalmology, University of Salerno, Salerno, Italy.

Accommodative esotropia (AE) is a convergent deviation due to an excess of the convergence linked to the innervational stimulus for accommodation and it is usually associated to the presence of hyperopia. The development of hyperopia over time has been widely described but the lack of comparative analysis among accommodative esotropia subtypes, does not allow to verify the existence of different developmental patterns. In this study we aimed to describe the long term changes of refractive error in patients affected by accommodative esotropia as a function of the strabismus type: refractive (RAE), non-refractive (NRAE) and partially accommodative esotropia (PAE). Read More

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September 2018

Sensitivity to S-Cone Stimuli and the Development of Myopia.

Invest Ophthalmol Vis Sci 2018 Sep;59(11):4622-4630

Psychology, Northeastern University, Boston, Massachusetts, United States.

Purpose: Longitudinal chromatic aberration (LCA) is a color signal available to the emmetropization process that causes greater myopic defocus of short wavelengths than long wavelengths. We measured individual differences in chromatic sensitivity to explore the role LCA may play in the development of refractive error.

Methods: Forty-four observers were tested psychophysically after passing color screening tests and a questionnaire for visual defects. Read More

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September 2018

Analysis of the current preschool vision screening in Denmark.

Acta Ophthalmol 2018 Sep 14. Epub 2018 Sep 14.

Eye Department, Zealand University Hospital, Roskilde, Denmark.

Purpose: To analyse the current vision screening programme for children attending school with respect to identifying children with significant refractive errors.

Methods: A total of 950 children from the municipality of Roskilde, Denmark, were invited to participate in a cross-sectional study of vision screening. 447 children aged 4. Read More

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September 2018
1 Read

Ocular findings in Japanese children with Down syndrome: the course of visual acuity and refraction, and systemic and ocular anomalies.

Clin Ophthalmol 2018 31;12:1637-1643. Epub 2018 Aug 31.

Department of Ophthalmology, Osaka Medical College, Takatsuki-City, Osaka, Japan,

Purpose: To investigate the age-related development of refractive errors and changes of visual acuity (VA), and the systemic and ocular anomalies in Japanese children and young adults with Down syndrome (DS).

Design: Retrospective cohort study.

Subjects And Methods: This study involved 222 Japanese children and young adults with DS (age range: 3 months to 19 years) seen at the Department of Ophthalmology, Shiga Medical Center for Children, Shiga, Japan. Read More

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Prevalence and causes of vision loss in South-east Asia and Oceania in 2015: magnitude, temporal trends and projections.

Br J Ophthalmol 2018 Sep 12. Epub 2018 Sep 12.

Vision & Eye Research Unit, Anglia Ruskin University, Cambridge, UK.

Background: To assess prevalence and causes of vision impairment in South-east Asia and Oceania regions from 1990 to 2015 and to forecast the figures for 2020.

Methods: Based on a systematic review of medical literature, prevalence of blindness (presenting visual acuity (PVA) <3/60 in the better eye), moderate and severe vision impairment (MSVI; PVA <6/18 but ≥3/60), mild vision impairment (PVA <6/12 but ≥6/18) and near vision impairment (>N5 or N8 in the presence of normal vision) were estimated for 1990, 2010, 2015 and 2020.

Results: The age-standardised prevalence of blindness for all ages and both genders was higher in the Oceania region but lower for MSVI when comparing the subregions. Read More

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September 2018
8 Reads
2.980 Impact Factor

Prevalence and causes of vision loss in North Africa and Middle East in 2015: magnitude, temporal trends and projections.

Br J Ophthalmol 2018 Sep 12. Epub 2018 Sep 12.

Vision and Eye Research Unit, School of Medicine, Anglia Ruskin University, Cambridge, UK.

Background: To assess the prevalence and causes of vision impairment in North Africa and the Middle East (NAME) from 1990 to 2015 and to forecast projections for 2020.

Methods: Based on a systematic review of medical literature, the prevalence of blindness (presenting visual acuity (PVA) <3/60 in the better eye), moderate and severe vision impairment (MSVI; PVA <6/18 but ≥3/60) and mild vision impairment (PVA <6/12 but ≥6/18) was estimated for 2015 and 2020.

Results: The age-standardised prevalence of blindness and MSVI for all ages and genders decreased from 1990 to 2015, from 1. Read More

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September 2018
7 Reads
2.980 Impact Factor

Estimating heritability of refractive error in Koreans: the Korea National Health and Nutrition Examination Survey.

Acta Ophthalmol 2018 Sep 12. Epub 2018 Sep 12.

Department of Ophthalmology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.

Purpose: To estimate the familial correlation and heritability of refractive error in general Korean population.

Methods: From the Korea National Health and Nutrition Examination Survey, 13 258 subjects of 7920 families, who were aged ≥19 years, were included in the study. Using variance components analysis, the additive genetic effect, or heritability, and the common and unique environmental effects on refractive error were examined, adopting common environments shared by cohabiting family or by siblings. Read More

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September 2018

Convergence insufficiency in Chinese high school students.

Clin Exp Optom 2018 Sep 11. Epub 2018 Sep 11.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.

Background: The frequency of convergence insufficiency was determined in a sample of Chinese high school students. The associations between the frequency of convergence insufficiency, gender, refractive error and accommodative insufficiency were investigated.

Methods: This was a single-site, prospective cross-sectional study. Read More

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September 2018
10 Reads

Flap-Lift LASIK 10 or More Years After Primary LASIK.

Authors:
Andrew I Caster

J Refract Surg 2018 Sep;34(9):604-609

Purpose: To evaluate the safety and efficacy of flap-lift LASIK performed 10 or more years after the original LASIK procedure.

Methods: All patients who were treated with flap-lift LASIK 10 or more years after primary LASIK for whom records of the primary treatment could be obtained and at least 45-day follow-up refractions after re-treatment were available were included in this study. A total of 23 eyes of 20 patients were identified. Read More

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September 2018
1 Read

Refractive Changes Associated with Diabetes Mellitus.

Semin Ophthalmol 2018 10;33(7-8):838-845. Epub 2018 Sep 10.

f Department of Physical Medicine and Rehabilitation , Special Hospital for Medical Rehabilitation Stubičke Toplice , Stubičke Toplice , Croatia.

Background And Methods: Diabetes mellitus is the most prevalent endocrinedisease in developed countries. In people with diabetes in addition to visionloss caused by diabetic retinopathy transient visual disturbances may occurfrequently caused by refractive changes. These changes in refraction are associated with variations in blood glucose levelsbut the underlying mechanism is still not fully understood. Read More

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November 2018
4 Reads
1.200 Impact Factor

The Role of Dynamic Retinoscopy in Predicting Infantile Accommodative Esotropia and Influencing Emmetropization.

J Binocul Vis Ocul Motil 2018 Apr-Jun;68(2):54-58

a Department of Ophthalmology , SB Ankara Education and Research Hospital , Ankara , Turkey.

Introduction And Purpose: To investigate the role that dynamic retinoscopy can play in reducing the occurrence of infantile accommodative esotropia and facilitating emmetropization in infants with high hyperopia.

Patients And Methods: 211 orthotropic infants under 1 year of age (3.5 to 12 months) identified as having ≥5 diopters of hyperopia in their more hyperopic eye on a routine eye exam. Read More

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September 2018
7 Reads

Avoiding Hyperopic Surprises After Descemet Membrane Endothelial Keratoplasty in Fuchs Dystrophy Eyes by Assessing Corneal Shape.

Am J Ophthalmol 2019 Jan 7;197:1-6. Epub 2018 Sep 7.

Eye Center, University Medical Center Freiburg, Freiburg, Germany. Electronic address:

Purpose: It is unclear which patients unexpectedly have a hyperopic refractive outcome after combined Descemet membrane endothelial keratoplasty and cataract surgery (triple DMEK). We assessed how corneal shape predicts hyperopia after triple DMEK.

Design: Retrospective cohort study. Read More

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January 2019
1 Read

[Unilateral combined strabismus surgery to correct esotropia : Video article on recession of the medial rectus muscle and plication of the lateral rectus muscle].

Ophthalmologe 2018 Nov;115(11):961-966

Klinik für Augenheilkunde, Goethe-Universität, Universitätsklinikum Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Deutschland.

Objective Of Surgery: The aim of strabismus surgery to correct esotropia is orthotropic alignment or microstrabismus to achieve best possible binocularity, a larger visual field, better appearance, and a frequently connected improved self-esteem. A widely used technique to correct esotropia is combined unilateral strabismus surgery with recession of the medial rectus muscle and plication of the lateral rectus muscle.

Indications: Indications are esotropia of various origins or decompensating esophoria over 15 prism diopters. Read More

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November 2018
9 Reads

Prevalence and Possible Factors of Myopia in Norwegian Adolescents.

Sci Rep 2018 Sep 7;8(1):13479. Epub 2018 Sep 7.

National Centre for Optics, Vision and Eye Care, Faculty of Health and Social Sciences, University of South-Eastern Norway, Kongsberg, Norway.

East Asia has experienced an excessive increase in myopia in the past decades with more than 80% of the younger generation now affected. Environmental and genetic factors are both assumed to contribute in the development of refractive errors, but the etiology is unknown. The environmental factor argued to be of greatest importance in preventing myopia is high levels of daylight exposure. Read More

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September 2018

Effect of Peripheral Defocus on Axial Eye Growth and Modulation of Refractive Error in Hyperopes: Protocol for a Nonrandomized Clinical Trial.

JMIR Res Protoc 2018 Sep 5;7(9):e173. Epub 2018 Sep 5.

Aston Optometry School, Aston University, Birmingham, United Kingdom.

Background: Hyperopia occurs due to insufficient ocular growth and a failure to emmetropize in childhood. In anisohyperopia, it is unclear why one eye may remain hyperopic while the fellow eye grows toward an emmetropic state. Animal studies have shown that manipulating peripheral defocus through optical means while simultaneously providing correct axial focus can either discourage or encourage axial eye growth to effectively treat myopia or hyperopia, respectively. Read More

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September 2018

Juvenile Tree Shrews Do Not Maintain Emmetropia in Narrow-band Blue Light.

Optom Vis Sci 2018 Oct;95(10):911-920

Department of Optometry and Vision Science, University of Alabama at Birmingham, Birmingham, Alabama

Significance: In spectrally broad-band light, an emmetropization mechanism in post-natal eyes uses visual cues to modulate the growth of the eye to achieve and maintain near emmetropia. When we restricted available wavelengths to narrow-band blue light, juvenile tree shrews (diurnal dichromatic mammals closely related to primates) developed substantial refractive errors, suggesting that feedback from defocus-related changes in the relative activation of long- and short-wavelength-sensitive cones is essential to maintain emmetropia.

Purpose: The purpose of this study was to examine the effects of narrow-band ambient blue light on refractive state in juvenile tree shrews that had completed initial emmetropization (decrease from hyperopia toward emmetropia). Read More

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October 2018
18 Reads

Acquired myopia followed by acquired hyperopia due to serous neurosensory retinal detachment following topiramate intake.

Eur J Ophthalmol 2018 Sep 3:1120672118797286. Epub 2018 Sep 3.

2 Department of Ophthalmology, NEO Hospital, Noida, India.

Purpose: To report a patient with fluctuating refraction following the use of oral topiramate.

Case Report: A 38-year-old male patient was diagnosed elsewhere with sudden-onset-acquired myopia, high intraocular pressure, and bilateral angle closure glaucoma for which he underwent laser peripheral iridotomy in both eyes and was started on topical antiglaucoma medications and topical steroids following laser peripheral iridotomy. He was referred for ultrasound biomicroscopy, which showed bilateral ciliary effusion. Read More

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September 2018
5 Reads

Bioptics for high hyperopia with combined multifocal intraocular lens implantation and excimer ablation in young patients.

Eur J Ophthalmol 2018 Sep 3:1120672118797281. Epub 2018 Sep 3.

1 Department of Ophthalmology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.

Purpose: To analyze the visual and refractive outcome of the bioptics procedure combining multifocal intraocular lens implantation and excimer laser surgery in young patients with high hyperopic eyes not suitable for a single surgical procedure.

Methods: This retrospective case series included 10 eyes of five patients (age range 18-30 years) with high hyperopia (spherical equivalent +8.51 ± 0. Read More

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September 2018
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Efficacy and safety of transepithelial photorefractive keratectomy.

J Cataract Refract Surg 2018 Oct 29;44(10):1267-1279. Epub 2018 Aug 29.

From the Bina Eye Hospital (Adib-Moghaddam, Soleyman-Jahi, Hoorshad, Tefagh, Haydar, Razi-Khoshroshahi), TransPRK Research Group (Adib-Moghaddam, Soleyman-Jahi, Sanjari-Moghaddam, Hoorshad, Tefagh, Haydar, Razi-Khoshroshahi), Universal Council of Ophthalmology, Universal Scientific Education and Research Network (Adib-Moghaddam, Soleyman-Jahi, Sanjari-Moghaddam, Hoorshad, Tefagh, Haydar, Razi-Khoshroshahi, Arba Mosquera), and School of Medicine, Shahid Beheshti University of Medical Sciences (Sanjari-Moghaddam), Tehran, Iran; Schwind Eye-Tech-Solutions (Arba Mosquera), Kleinostheim, Germany; University of Valladolid (Arba Mosquera), Valladolid, Spain.

Transepithelial photorefractive keratectomy (PRK) was introduced to prevent complications from conventional PRK and femtosecond laser-assisted laser in situ keratomileusis (LASIK). In the 2-step platform, phototherapeutic keratectomy is followed by PRK. It did not show notable safety or efficacy superiorities over conventional PRK. Read More

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October 2018
7 Reads
2.720 Impact Factor