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    1574 results match your criteria Clinical and Experimental Optometry [Journal]

    1 OF 32

    The minimum test battery to screen for binocular vision anomalies: report 3 of the BAND study.
    Clin Exp Optom 2017 Nov 18. Epub 2017 Nov 18.
    Srimathi Sundari Subramanian Department of Visual Psychophysics, Elite School of Optometry, Unit of Medical Research Foundation, Chennai, India.
    Purpose: This study aims to report the minimum test battery needed to screen non-strabismic binocular vision anomalies (NSBVAs) in a community set-up. When large numbers are to be screened we aim to identify the most useful test battery when there is no opportunity for a more comprehensive and time-consuming clinical examination.

    Methods: The prevalence estimates and normative data for binocular vision parameters were estimated from the Binocular Vision Anomalies and Normative Data (BAND) study, following which cut-off estimates and receiver operating characteristic curves to identify the minimum test battery have been plotted. Read More

    Developing prognostic biomarkers in intermediate age-related macular degeneration: their clinical use in predicting progression.
    Clin Exp Optom 2017 Nov 14. Epub 2017 Nov 14.
    Centre for Eye Health, Sydney, New South Wales, Australia.
    Age-related macular degeneration is a common, complex and blinding eye disease. When early and intermediate levels of severity are detected in one or both eyes, there is a wide-ranging 0.4 to 53 per cent risk of progression to advanced disease in five years. Read More

    Refractive changes after intravitreal ranibizumab injections for diabetic macular oedema.
    Clin Exp Optom 2017 Nov 14. Epub 2017 Nov 14.
    Second Department of Ophthalmology, University of Athens, Athens, Greece.
    Purpose: The purpose of this study was to evaluate refractive changes after intravitreal ranibizumab injections for the treatment of diabetic macular oedema.

    Methods: Participants in this retrospective study were 35 patients (35 eyes) with diabetic macular oedema, who received intravitreal ranibizumab injections. Spherical equivalent refractive power was evaluated before treatment and at least one month after the last injection where no fluid existed. Read More

    Impact of supervised student optometry consultations on the patient experience.
    Clin Exp Optom 2017 Nov 13. Epub 2017 Nov 13.
    School of Optometry and Vision Science, The University of New South Wales, Sydney, New South Wales, Australia.
    Background: Understanding patient perceptions of having students involved in their clinical care is important as we strive to develop optimal models of care that integrate teaching with the best possible experience for the patient. The aim was to ascertain the impact of supervised optometry student consultations on the patient experience.

    Methods: A survey comprising 45 questions was mailed to consecutive adult patients who had undergone a comprehensive eye examination at the Australian College of Optometry over a four-week period. Read More

    Anterior segment morphology after laser iridotomy in primary angle closure suspects.
    Clin Exp Optom 2017 Nov 12. Epub 2017 Nov 12.
    Department of Statistics, National Institute of Nutrition, Hyderabad, India.
    Purpose: To evaluate and compare the changes in anterior segment parameters in primary angle closure suspects before and after laser peripheral iridotomy and intrasession repeatability of measurements before laser iridotomy as assessed by Scheimpflug-Placido disc topographer.

    Methods: Before laser iridotomy, 56 eyes of 56 primary angle closure suspect patients underwent anterior segment analysis with the Sirius Scheimpflug-Placido disc topographer system using glaucoma analysis mode, which was repeated a week after iridotomy. Anterior segment parameters such as central anterior chamber depth, central corneal thickness, anterior chamber volume and iridocorneal angle were analysed before and after laser iridotomy and compared with paired t-test. Read More

    Refractive error and vision correction in a general sports-playing population.
    Clin Exp Optom 2017 Nov 9. Epub 2017 Nov 9.
    School of Life and Health Sciences, Aston University, Birmingham, UK.
    Purpose: To evaluate, in an amateur sports-playing population, the prevalence of refractive error, the type of vision correction used during sport and attitudes toward different kinds of vision correction used in various types of sports.

    Method: A questionnaire was used for people engaging in sport and data was collected from sport centres, gyms and universities that focused on the motor sciences.

    Results: One thousand, five hundred and seventy-three questionnaires were collected (mean age 26. Read More

    Reasons for spectacle reassessment in a tertiary eye care centre over a period of six years.
    Clin Exp Optom 2017 Nov 3. Epub 2017 Nov 3.
    Elite School of Optometry, Chennai, Tamil Nadu, India.
    Background: To determine the spectacle reassessment rates of dissatisfied patients returning to the optical services department of a tertiary eye centre in India over a period of six years.

    Methods: A total of 169,567 spectacles were dispensed from the optical services department between January 2010 and December 2015. The spectacle reassessment forms of dissatisfied patients who returned to the optical services department with their spectacles were analysed. Read More

    Validation of keratometric measurements obtained with an intraoperative image-guided system: intra-session repeatability and interchangeability with an optical biometer.
    Clin Exp Optom 2017 Oct 31. Epub 2017 Oct 31.
    Department of Ophthalmology, Marina Baixa Hospital, Alicante, Spain.
    Purpose: To evaluate the intra-session repeatability of keratometric measurements obtained in healthy eyes with the Verion image-guided system (Alcon Laboratories Inc, Fort Worth, Texas, USA) as well as the interchangeability of such measurements with those obtained with an optical biometer (Aladdin, Topcon, Tokyo, Japan).

    Methods: A total of 53 eyes of 53 patients (age 31-67 years) were enrolled in the study. All eyes received a comprehensive ophthalmologic examination including an analysis with the Verion image-guided and Aladdin systems. Read More

    Sighting ocular dominance magnitude varies with test distance.
    Clin Exp Optom 2017 Oct 31. Epub 2017 Oct 31.
    Vision and Motor Performance Lab, School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada.
    Background: Ocular dominance can be defined as the preference of an individual for viewing with one eye over the other for particular visual tasks. It is relevant to monovision contact lens wear, cataract surgery and sports vision. Clinically, the measurement of ocular dominance is typically done at an arbitrary distance using a sighting test, such as the hole-in-card method that has a binary outcome. Read More

    The effect of transient glare on shape discrimination threshold in myopic adults.
    Clin Exp Optom 2017 Oct 27. Epub 2017 Oct 27.
    Optometry Department, Eye Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
    Background: The aim was to evaluate the effect of transient glare on shape discrimination threshold (SDT) in myopic adults.

    Methods: A total of 162 myopic subjects were enrolled. Of these, 121 had low to mid myopia (-1. Read More

    Overview of mechanisms of antibiotic resistance in Pseudomonas aeruginosa: an ocular perspective.
    Clin Exp Optom 2017 Oct 18. Epub 2017 Oct 18.
    School of Optometry and Vision Science, Faculty of Science, The University of New South Wales, Sydney, New South Wales, Australia.
    Treatment of Pseudomonas aeruginosa eye infections often becomes a challenge due to the ability of this bacterium to be resistant to antibiotics via intrinsic and acquired mechanisms. Transfer of resistance due to interchangeable genetic elements is an important mechanism for the rapid transfer of antibiotic resistance in this pathogen. As a result, drug-resistant strains are becoming increasingly prevalent worldwide. Read More

    Effect of central corneal thickness on intraocular pressure and comparison of Topcon CT-80 non-contact tonometry with Goldmann applanation tonometry.
    Clin Exp Optom 2017 Oct 18. Epub 2017 Oct 18.
    Department of Statistics, National Institute of Nutrition, Hyderabad, India.
    Background: To compare intraocular pressure (IOP) measurements obtained with the Topcon CT-80 non-contact tonometer (NCT) and Goldmann applanation tonometer (GAT), in different ranges of IOP in normal and glaucoma subjects, and to assess the influence of central corneal thickness (CCT) on the IOP measurements in Asian Indian eyes.

    Methods: Four hundred and two eyes of 402 subjects (193 newly diagnosed primary open angle glaucoma [POAG] and 209 normal) were enrolled for this prospective study. For each eye, IOP was measured with GAT by a glaucoma specialist and NCT by a trained optometrist. Read More

    Impact of contact lens material and design on the ocular surface.
    Clin Exp Optom 2017 Oct 11. Epub 2017 Oct 11.
    Optics Department, Complutense University of Madrid, Madrid, Spain.
    Background: To evaluate the impact on the ocular surface of a daily disposable hydrogel contact lens with high water content compared with two silicone hydrogel daily disposable lenses of lower water content.

    Methods: The hydrogel lens assessed was made from nesofilcon A and the silicone hydrogel lenses were made of delefilcon A and stenfilcon A. Contact lens thickness was measured to assess material stability during daily wear, and ocular surface parameters such as tear film osmolarity, tear meniscus area and central corneal thickness were also assessed. Read More

    Stereoacuity measurement using a phoropter combined with two 4K smartphones.
    Clin Exp Optom 2017 Oct 9. Epub 2017 Oct 9.
    Department of Optometry, Second Hospital of Jilin University, Changchun, Jilin, China.
    Purpose: To evaluate stereoacuity using a combination of a phoropter and two 4K smartphones.

    Methods: A stereopsis measurement system was established using a phoropter (Topcon VT-10) and two Sony 4K smartphones (Sony Xperia Z5 Premium Dual E6883). A total of 154 subjects (69 children and 85 adults) were enrolled for evaluation using this system and subsequent comparison with the Fly Stereo Acuity test. Read More

    Advanced imaging for the diagnosis of age-related macular degeneration: a case vignettes study.
    Clin Exp Optom 2017 Oct 9. Epub 2017 Oct 9.
    Centre for Eye Health, Sydney, New South Wales, Australia.
    Background: The aim of this study is to evaluate the diagnosis, staging, imaging and management preferences, and the effect of advanced imaging among practising optometrists in age-related macular degeneration (AMD).

    Methods: Up to 20 case vignettes (computer-based case simulations) were completed online in a computer laboratory in random order by 81 practising optometrists of Australia. Each case presented findings from a randomly selected patient seen previously at the Centre for Eye Health for a macular assessment in the following order: case history, preliminary tests and colour fundus photography. Read More

    Refractive error in Chinese with type 2 diabetes and its association with glycaemic control.
    Clin Exp Optom 2017 Oct 3. Epub 2017 Oct 3.
    School of Public Health, Medical College of Soochow University, Suzhou, China.
    Background: The aim of this study was to determine the prevalence of refractive errors and their association with glycaemic control among adults with type 2 diabetes mellitus (T2DM) in eastern China.

    Methods: A community-based survey, including 913 adults with T2DM aged 30 to 89 years, was conducted. Refractive error was assessed by autorefraction, after which subjective refraction was performed. Read More

    In vivo confocal microscopic investigation of the cornea after autologous implantation of lenticules obtained through small incision lenticule extraction for treatment of hyperopia.
    Clin Exp Optom 2017 Oct 1. Epub 2017 Oct 1.
    Key Laboratory of Myopia, Ministry of Health, Department of Ophthalmology, EYE & ENT Hospital of Fudan University, Shanghai, China.
    Purpose: To investigate re-innervation in the implanted lenticule, as well as changes to the cornea, after correcting hyperopia with an autologous implantation of a lenticule obtained through small incision lenticule extraction (SMILE).

    Methods: This study retrospectively analysed re-innervation in the implanted lenticule, as well as microscopic morphological changes in the corneal architecture of the recipient cornea in five patients (with myopia in one eye and hyperopia in the contralateral eye) who received SMILE in the myopic eye and femtosecond laser in situ keratomileusis (FS-LASIK) combined with lenticule implantation in the contralateral hyperopic eye. Re-innervation in the implanted lenticule, as well as microscopic morphological changes in corneal architecture, were evaluated by in vivo confocal microscopy. Read More

    Need for optical intervention in children attending a school for the blind in Eritrea.
    Clin Exp Optom 2017 Sep 26. Epub 2017 Sep 26.
    Discipline of Optometry, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
    Purpose: To identify the need for optical intervention including spectacles and low vision devices (LVDs) in children attending the only school for the blind in Eritrea.

    Methods: A total of 92 children were examined using the World Health Organization Prevention of Blindness program form for the recording of children with blindness and vision impairment. Examination included distance and near visual acuity (VA), refraction, trial of LVDs and evaluation of anterior and posterior segments. Read More

    Contact lens trends over three decades in a hospital-based practice in India.
    Clin Exp Optom 2017 Sep 26. Epub 2017 Sep 26.
    Contact Lens Clinic, Medical Research Foundation, Chennai, India.
    Background: Contact lens fittings in a hospital-based practice are different from those in private practices because of specialised conditions. Few studies have been published on material preferences of such wearers, especially in long-term wearers. The aim of this study is to document contact lens prescribing trends in a hospital-based practice among long-term lens wearers and to identify their demographic profile. Read More

    Contact lenses for ophthalmic drug delivery.
    Clin Exp Optom 2017 Sep;100(5):494-512
    School of Optometry and Vision Science, The University of New South Wales, Sydney, New South Wales, Australia.
    Contact lenses as a means to deliver pharmaceuticals to the eye have seen a significant increase in research interest in the past few years. This review will detail the in vitro experiments which have investigated use of these contact lenses in the context of the desired pharmacological treatment goals in the management of infectious, inflammatory, allergic and glaucomatous diseases of the eye. The techniques researchers have employed to modify and tailor drug release rates from these materials, including the use of vitamin E diffusion barriers, modified ionicity, molecular imprinting and incorporation of drug reservoirs, will be discussed, as well as their impact on drug release kinetics. Read More

    Tear film evaluation and management in soft contact lens wear: a systematic approach.
    Clin Exp Optom 2017 Sep;100(5):438-458
    Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, Auckland, New Zealand.
    The human tear film is a highly ordered structure consisting of a thin layer of lipid on the surface and a thicker aqueous-mucin phase, which increases in mucin concentration toward the corneal epithelial cell layer. The health of the tear film and ocular surface influences the likelihood of being able to achieve successful contact lens wear. Contact lens discomfort and dryness are the most frequent reasons why contact lens wearers experience reduced wearing times, which can eventually lead to contact lens discontinuation. Read More

    The effect of prism on preferred retinal locus.
    Clin Exp Optom 2017 Sep 20. Epub 2017 Sep 20.
    Oklahoma College of Optometry, Northeastern State University, Tahlequah, Oklahoma, USA.
    Background: Whether prism, especially base-up prism, affects the area of the retina used for fixation in a patient with central scotoma has been a controversial subject for 35 years. Our pilot study employed microperimetry to evaluate the effect of base-up prism on the fixation locus, or preferred retinal locus (PRL), in subjects with central scotoma.

    Methods: We used a microperimeter to assess the PRL in 13 visually impaired subjects with central scotoma under four conditions: no lens, a lens with no prism (control lens), 6(Δ) base-up, and 10(Δ) base-up. Read More

    Evaluation of retinal nerve fibre layer, ganglion cell layer and choroidal thickness with optical coherence tomography in migraine patients: a case-control study.
    Clin Exp Optom 2017 Sep 20. Epub 2017 Sep 20.
    Department of Ophthalmology, Adiyaman University, Adiyaman, Turkey.
    Background: Evaluation of retinal nerve fibre layer (RNFL), ganglion cell layer (GCL) and choroidal thickness (CT) with optical coherence tomography (OCT) in chronic migraine patients, to compare with healthy controls.

    Material And Method: Ninety-four eyes of 47 chronic migraine patients (Group 1) and 68 eyes of 34 healthy individuals (Group 2) were included in this prospective case-control study. The right and left eyes were separately evaluated. Read More

    Vision assessment in persons with intellectual disabilities.
    Clin Exp Optom 2017 Sep 18. Epub 2017 Sep 18.
    Center for Applied Vision Science, Munich University of Applied Sciences, Munich, Germany.
    Purpose: To investigate the degree of visual acuity in workers with intellectual disabilities and the impact of vision on their working conditions.

    Methods: We recruited 224 workers (mean age 43.77 years, SD ± 12. Read More

    Low frequency ranibizumab versus dexamethasone implant for macular oedema secondary to branch retinal vein occlusion.
    Clin Exp Optom 2017 Sep 18. Epub 2017 Sep 18.
    Department of Ophthalmology, Bozyaka Training and Research Hospital, Izmir, Turkey.
    Background: The aim was to make a real-world comparison of the efficacy of ranibizumab, dexamethasone and grid laser treatments in macular oedema due to branch retinal vein occlusion (BRVO).

    Methods: Forty-four eyes of 44 consecutive patients with macular oedema secondary to BRVO were included. Treatment arms comprised standard care (StCARE, n = 15), intravitreal ranibizumab (RNB, n = 14) and dexamethasone implant (DEX, n = 15). Read More

    Does air gas aesthesiometry generate a true mechanical stimulus for corneal sensitivity measurement?
    Clin Exp Optom 2017 Sep 18. Epub 2017 Sep 18.
    School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada.
    Background: Belmonte Ocular Pain Meter (OPM) air jet aesthesiometry overcomes some of the limitations of the Cochet-Bonnet aesthesiometer. However, for true mechanical corneal sensitivity measurement, the airflow stimulus temperature of the aesthesiometer must equal ocular surface temperature (OST), to avoid additional response from temperature-sensitive nerves. The aim of this study was to determine: (A) the stimulus temperature inducing no or least change in OST; and (B) to evaluate if OST remains unchanged with different stimulus durations and airflow rates. Read More

    A novel c.240_241insGG mutation in NDP gene in a family with Norrie disease.
    Clin Exp Optom 2017 Sep 18. Epub 2017 Sep 18.
    Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
    Background: Norrie disease (ND) is a rare, X-linked recessive disorder with the main characteristic of early childhood blindness. The aim of the present study was to identify the genetic cause of the disease and the phenotypic characteristics of the patients in an Iranian family with four affected males with ND.

    Methods: Norrie disease pseudoglioma (NDP) gene was sequenced and clinical examination was performed on patients. Read More

    Clinical biomicroscopy and retinoscopy findings of keratoconus in a Middle Eastern population.
    Clin Exp Optom 2017 Sep 6. Epub 2017 Sep 6.
    School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
    Background: The present work was conducted to investigate the prevalence of clinical biomicroscopy and retinoscopy findings of corneas with keratoconus (KC) at first presentation and their relationship with disease severity.

    Method: In a prospective cross-sectional study, 371 consecutive KC patients were examined by slitlamp biomicroscopy and retinoscopy at the time of diagnosis. This research evaluates the prevalence of clinical findings such as a corneal protrusion, Vogt's striae, Fleischer's ring, Munson's sign, Rizzuti's sign, corneal scars, as well as any additional KC signs such as prominent nerve fibres, scissoring reflex and Charleaux 'oil droplet' sign on retinoscopy. Read More

    Rethinking contact lens aftercare.
    Clin Exp Optom 2017 Sep 4;100(5):411-431. Epub 2017 Sep 4.
    Eurolens Research, The University of Manchester, Manchester, UK.
    The evolution of contact lens technology and clinical practice over the past three decades has been remarkable, with dramatic improvements in material biocompatibility, better lens designs and care systems, and more flexible and convenient modalities of wear. However, our approach to the aftercare examination has remained conservative, with the general modus operandi having not fully evolved from the difficult, early years of fitting non-regular replacement rigid and low water content hydrogel lenses. In this paper, we review current aftercare practice and in particular, the preferred frequency that lens wearers should return for routine visits and the appropriateness of regulations governing contact lens prescription expiry. Read More

    Epidemiology of contact lens-induced infiltrates: an updated review.
    Clin Exp Optom 2017 Sep 4;100(5):473-481. Epub 2017 Sep 4.
    University Hospitals Eye Institute, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA.
    Corneal infiltrative events (CIEs) are well established as a risk associated with soft contact lens wear. The incidence of symptomatic CIEs during extended soft lens wear ranges from 2.5 to six per cent; when asymptomatic CIEs are included, the incidence can be as high as 20-25 per cent. Read More

    Size does matter: what is the corneo-limbal diameter?
    Clin Exp Optom 2017 Sep 3;100(5):522-528. Epub 2017 Sep 3.
    Texas Eye Research and Technology Center, University of Houston College of Optometry, Houston, Texas, USA.
    This review surveys available literature for corneal and limbal dimensions. With modern scleral lenses, these measures have become central to determining the overall size of a lens for satisfactory fitting. In general, published values are not based on a definition of what is being measured. Read More

    The effects of preterm birth on visual development.
    Clin Exp Optom 2017 Sep 3. Epub 2017 Sep 3.
    Department of Paediatrics, The University of Auckland, Auckland, New Zealand.
    Children born very preterm are at a greater risk of abnormal visual and neurological development when compared to children born at full term. Preterm birth is associated with retinopathy of prematurity (a proliferative retinal vascular disease) and can also affect the development of brain structures associated with post-retinal processing of visual information. Visual deficits common in children born preterm, such as reduced visual acuity, strabismus, abnormal stereopsis and refractive error, are likely to be detected through childhood vision screening programs, ophthalmological follow-up or optometric care. Read More

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