114,017 results match your criteria visual acuity


The effect of COVID-19 pandemic restrictions on neovascular AMD patients treated with treat-and-extend protocol.

Int Ophthalmol 2021 Apr 17. Epub 2021 Apr 17.

Department of Ophthalmology, Marmara University School of Medicine, Fevzi Çakmak Mah, Muhsin Yazıcıoğlu Cd, No: 10, Marmara Üniversitesi Pendik Eğitim ve Araştırma Hastanesi, Kat: 3, Oftalmoloji Servisi, Pendik, 34899, Istanbul, Turkey.

Purpose: To investigate the adherence rate of neovascular age-related macular degeneration (nAMD) patients in treat-and-extend (TAE) protocol to their anti-vascular endothelial growth factor (anti-VEGF) intravitreal injection (IVI) appointments and to evaluate the functional and anatomical outcomes of the patients who attended and did not attend their IVI appointments during the coronavirus disease 2019 (COVID-19) restriction period (RP).

Methods: The patients with nAMD having IVI appointments between March 16 and June 1, 2020 (RP in Turkey) were included in this retrospective study. For adherence analysis, the patients who attended (Group 1, n = 44) and who did not attend (Group 2, n = 60) their IVI appointment visits during the RP (V) were evaluated according to their last visit before the RP (V). Read More

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Impact of submacular fluid volume on visual outcome in macula-off rhegmatogenous retinal detachment using automated optical coherence tomography volumetric quantification.

Clin Exp Ophthalmol 2021 Apr 16. Epub 2021 Apr 16.

Department of Ophthalmology, Medical University Innsbruck, Innsbruck, Austria.

Background: We investigated effects of submacular fluid volume (SMFV) on visual outcomes following surgery for macula-off primary rhegmatogenous retinal detachment (RRD) using automated fluid volumetric quantification with optical coherence tomography (OCT).

Methods: We analysed 127 eyes that were surgically treated for macula-off RRDs. We obtained preoperative images following the spectral domain (SD)-OCT dense volume protocol, applied automated retinal segmentation, and used an automated algorithm to quantify each eye's SMFV. Read More

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Visual neuroscience methods for marmosets: efficient receptive field mapping and head-free eye tracking.

eNeuro 2021 Apr 15. Epub 2021 Apr 15.

Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Frankfurt, Germany.

The marmoset has emerged as a promising primate model system, in particular for visual neuroscience. Many common experimental paradigms rely on head fixation and an extended period of eye fixation during the presentation of salient visual stimuli. Both of these behavioral requirements can be challenging for marmosets. Read More

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Oral selenium improved the disease activity in patients with mild Graves' orbitopathy.

J Fr Ophtalmol 2021 Apr 13. Epub 2021 Apr 13.

Instituto de Oftalmologia Conde de Valenciana, IAP, Chimalpopoca # 14, Colonia Obrera, Delegación Cuauhtemoc, 06800, Mexico City, Mexico. Electronic address:

Background: Graves' orbitopathy (GO) is the most common extrathyroidal manifestation of Graves' disease (GD), an autoimmune disorder arising from the activity of T lymphocytes against antigens that infiltrate thyroid tissue, orbital tissue and extraocular muscles. An increase in oxidative stress has been discovered in autoimmune thyroid disease, encouraging investigation into new forms of treatment. Selenium has been described as a treatment option given its antioxidant properties. Read More

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Early clinical outcomes and comparison between trans-PRK and PRK, regarding refractive outcome, wound healing, pain intensity and visual recovery time in a real-world setup.

Authors:
Harald C Gaeckle

BMC Ophthalmol 2021 Apr 16;21(1):181. Epub 2021 Apr 16.

Augenlaserzentrum Neu-Ulm, Edisonallee 19, 89231, Neu-Ulm, Germany.

Purpose: To compare early clinical outcomes of single-step transepithelial photorefractive keratectomy (tPRK) and photorefractive keratectomy (PRK) regarding refractive outcome, visual acuity, wound healing, pain intensity and visual recovery time.d.

Methods: In this prospective clinical observational study 200 eyes of 100 consecutive patients with mild to moderate myopia with or without mild astigmatism were included. Read More

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Treatment of neovascular age related macular degeneration during COVID-19 pandemic: The short term consequences of unintended lapses.

Eur J Ophthalmol 2021 Apr 16:11206721211010613. Epub 2021 Apr 16.

University of Health Sciences, Ulucanlar Eye Training and Research Hospital, Ophthalmology Clinic, Ankara, Turkey.

Aim: To investigate the short-term effects of COVID-19 pandemic related unintended treatment lapses on neovascular age related macular degeneration (nAMD) patients.

Methods: In this prospective cross-sectional study, 140 patients who had at least one anti-vascular endothelial growth factor (VEGF) injection for nAMD within 12 months before COVID-19 pandemic and who had at least 3 months of unintended lapse for control visits during pandemic were recruited and underwent a detailed opthalmological examination and optical coherence tomography imaging.

Results: Of these 140 eyes, 113 (80. Read More

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Sleep time and homework hours/daily are associated with reduced visual acuity among school students aged 9-18 in Shenyang in 2016.

Eur J Ophthalmol 2021 Apr 16:11206721211008040. Epub 2021 Apr 16.

Department of Child and Adolescent Health, School of Public Health, China Medical University, Shenyang, Liaoning Province, P.R. China.

Purpose: The purpose of this survey was to explore the prevalence of reduced visual acuity and its associated factors among school students in Shenyang in 2016.

Methods: This was a cross-sectional study using data from the Ministry of Education' Student Physical Fitness (MESPF) monitoring in 2016. A total of 13,642 students aged 9-18 years were surveyed in Shenyang. Read More

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[Influenza A-associated acute necrotizing encephalopathy].

Rev Chil Pediatr 2020 Dec 24;91(6):941-946. Epub 2020 Sep 24.

Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.

Introduction: Acute necrotizing encephalopathy of childhood (ANEC) is a rare disease characterized by alteration of consciousness and multiple symmetric brain lesions mainly involving the thalamus. It presents a high mortality rate and severe sequelae.

Objective: To describe a school-age patient with influenza A-related ANEC with favorable evolution. Read More

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December 2020

Association of disorganization of retinal inner layers with optical coherence tomography angiography features in branch retinal vein occlusion.

Graefes Arch Clin Exp Ophthalmol 2021 Apr 16. Epub 2021 Apr 16.

Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, E-7, Suita, Osaka, 565-0871, Japan.

Purpose: To examine the associations between the disorganization of the retinal inner layers (DRIL) and optical coherence tomography angiography characteristics and visual acuity (VA) outcomes in eyes with macular edema secondary to branch retinal vein occlusion (BRVO).

Methods: In this single-center cross-sectional cohort study, the data of 43 patients with macular edema secondary to BRVO that received pro re nata anti-vascular endothelial growth factor therapy were analyzed. B-scan and en face angiographic images were obtained by swept-source-based wide-field optical coherence tomography angiography performed at a single visit 1 month after the anti-vascular endothelial growth factor therapy session and evaluated. Read More

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Comparison of visual and refractive outcomes of diffractive bifocal toric and trifocal toric intraocular lenses 12 months after implantation in patients with moderate to high myopia.

Int Ophthalmol 2021 Apr 16. Epub 2021 Apr 16.

Department of Ophthalmology, The Dunya Eye Hospital, Konya, Turkey.

Purpose: To compare the visual and refractive outcomes of bifocal toric and trifocal toric intraocular lenses (IOL) in patients with moderate to high myopia at 12 months after implantation.

Method: This is a prospective and comparative study. In 120 eyes with moderate to high myopia and astigmatism, bifocal toric IOLs (n = 60 eyes) or trifocal toric IOLs (n = 60 eyes) were implanted. Read More

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The impact of vaping on ocular health: a literature review.

Int Ophthalmol 2021 Apr 16. Epub 2021 Apr 16.

Hoopes Vision Research Center, 11820 State Street Suite #200, Draper, UT, 84020, USA.

Purpose: Vaping, or the use of electronic cigarettes, was initially introduced as a step toward smoking cessation, but has become an increasingly popular option for smokers. Though advertised as safer than conventional cigarettes, these devices have been found to contain carcinogenic chemicals, air pollutants, and heavy metals. The purpose of this article is to shed light on the known effects of vaping on the ocular setting and raise the discussion about additional potential effects that may call for further investigation. Read More

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[Descemet membrane endothelial keratoplasty (DMEK) for graft failure after penetrating keratoplasty and in vascularized high-risk eyes].

Ophthalmologe 2021 Apr 16. Epub 2021 Apr 16.

Zentrum für Augenheilkunde, Medizinische Fakultät, Universitätsklinik Köln, Kerpener Str. 62, 50924, Köln, Deutschland.

Background: Descemet membrane endothelial keratoplasty (DMEK) is considered the gold standard for the treatment of corneal endothelial dysfunction and generally leads to good postoperative results. Recently, studies have also analyzed the outcome of DMEK in so-called high-risk eyes.

Material And Methods: The relevant literature and own data on DMEK for graft failure after penetrating keratoplasty and in vascularized high-risk eyes are presented and discussed. Read More

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Surgical removal of orbital tumors by orbital approach using ultrasonic surgical system SONOPET®.

Orbit 2021 Apr 16:1-10. Epub 2021 Apr 16.

Ophthalmology Department, 12 de Octubre Hospital, Complutense University, Madrid, Spain.

: Orbital tumor surgery can be challenging when the tumor is located in a very narrow surgical field and close to important structures, such as nerves or extraocular muscles that can be damaged during surgery. Advances in technology and special surgical techniques help to avoid such damage. We describe our experience using SONOPET® ultrasonic surgical aspirator to remove 12 different orbital tumors that were difficult to treat due to their poorly defined borders, adhesions, or location. Read More

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Comparing the efficacy and safety of femtosecond laser-assisted vs conventional penetrating keratoplasty: a meta-analysis of comparative studies.

Int Ophthalmol 2021 Apr 15. Epub 2021 Apr 15.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, 510060, China.

Purpose: To investigate the safety and efficacy of femtosecond laser-assisted penetrating keratoplasty (FLAK) versus conventional penetrating keratoplasty (CPK).

Methods: A literature search of PubMed, Cochrane, Embase, Web of Science, and Clinicaltrials.gov was conducted for comparative studies published from January 2007 to October 2019. Read More

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Correlation of Central Macular Thickness and the Best-Corrected Visual Acuity in Three Months After Cataract Surgery by Phacoemulsification and With Intraocular Lens Implantation.

Authors:
Ashjan Bamahfouz

Cureus 2021 Mar 12;13(3):e13856. Epub 2021 Mar 12.

Ophthalmology, Umm Al-Qura University, Mecca, SAU.

Purpose To estimate the incidence of central macular edema (CME) following cataract surgery and to correlate the central macular thickness (CMT) to the best-corrected visual acuity (BCVA). Methods This cohort study in 2018-2019 included cataract grades I and II. They were operated by phacoemulsification and intraocular lens implantation. Read More

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Indications of Keratoplasty and Outcomes of Deep Anterior Lamellar Keratoplasty Compared to Penetrating Keratoplasty.

Cureus 2021 Mar 11;13(3):e13825. Epub 2021 Mar 11.

Medical Education, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, SAU.

Background Corneal diseases are a significant cause of visual impairment and blindness. Despite the treatable nature of many corneal diseases before visual demise, many cases of advanced disease necessitating keratoplasty for visual rehabilitation are encountered. A mismatch between the number of corneal donors and potential recipients also exists worldwide, with underutilization of certain types of keratoplasty techniques that may allow more efficient use of this limited resource. Read More

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Diabetic Retinopathy in Type 2 Diabetes Mellitus Patients Attending the Diabetic Clinic of the University of Gondar Hospital, Northwest Ethiopia.

J Ophthalmol 2021 31;2021:6696548. Epub 2021 Mar 31.

Centre for Public Health, Queen's University Belfast, Belfast, UK.

Objective: To investigate the level of diabetic retinopathy in type 2 diabetes (T2DM) patients attending the University of Gondar Hospital (UGH) Diabetic Clinic, Northwest Ethiopia.

Methods: An audit was carried out involving a total of 739 T2DM patients attending at the diabetic clinic of UGH. They represented approximately 90% and 50% of all T2DM patients under regular review at the urban and rural diabetic clinics of UGH, respectively. Read More

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Reduced evoked activity and cortical oscillations are correlated with anisometric amblyopia and impairment of visual acuity.

Sci Rep 2021 Apr 15;11(1):8310. Epub 2021 Apr 15.

Neuroscience Center, Helsinki Institute of Life Science, University of Helsinki, P.O. Box 21, 00014, Helsinki, Finland.

Amblyopia is a developmental disorder associated with abnormal visual experience during early childhood commonly arising from strabismus and/or anisometropia and leading to dysfunctions in visual cortex and to various visual deficits. The different forms of neuronal activity that are attenuated in amblyopia have been only partially characterized. In electrophysiological recordings of healthy human brain, the presentation of visual stimuli is associated with event-related activity and oscillatory responses. Read More

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Real-life medium term follow-up data for intravitreal dexamethasone implant in retinal vein occlusion.

Sci Rep 2021 Apr 15;11(1):8303. Epub 2021 Apr 15.

Department of Ophthalmology, University Medical Center, Greifswald, Germany.

Macular edema (ME) is the most frequent vision threatening consequence after retinal vein occlusion (RVO). In this study, we evaluate the effect of dexamethasone intravitreal implants (DII, Ozurdex) in a real-life cohort of 99 patients with ME due to RVO. All patients who received DII for ME following RVO between 2011 and 2016 at the University Eye Hospital Freiburg, Germany and who had fully accessible electronic medical records were eligible for this study. Read More

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"Corneal Plication" for the Management of Progressive Corneal Graft Protrusion in Patients With Keratoconus: a New Technique.

Cornea 2021 Apr 9. Epub 2021 Apr 9.

Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital, Fondation Asile des aveugles, Lausanne, Switzerland; and 1st Department of Ophthalmology, National and Kapodistrian University of Athens, General Hospital "G. Gennimatas," Athens, Greece.

Purpose: The purpose of this study was to present a new surgical technique, namely corneal plication, for the management of high astigmatism and progressive corneal graft protrusion after penetrating keratoplasty (PKP) for keratoconus.

Methods: New surgical approach description.

Results: A 61-year-old woman with a history of bilateral keratoconus was referred to our institute for the management of progressive corneal graft protrusion in her left eye 25 years after PKP. Read More

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Outcome of Pseudophakic Phakic Triple.

Cornea 2021 Apr 14. Epub 2021 Apr 14.

Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.

Purpose: To evaluate the outcome of phakic and pseudophakic eyes treated by Descemet membrane endothelial keratoplasty (DMEK) versus DMEK combined with cataract surgery (triple DMEK).

Methods: Retrospective cohort study based on the prospective Cologne DMEK data base. This study is a single-center analysis of 62 eyes undergoing phakic (age mean ± SD 52 ± 6. Read More

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One-Year Front Versus Central and Paracentral Corneal Changes After Bowman Layer Transplantation for Keratoconus.

Cornea 2021 Apr 14. Epub 2021 Apr 14.

Eye Unit, Royal Gwent Hospital, Newport, Wales, United Kingdom; and Eye Unit, Southampton General Hospital, Southampton, England, United Kingdom.

Purpose: To report the front corneal versus central and paracentral corneal changes after Bowman layer transplantation for keratoconus in a tertiary hospital in the United Kingdom.

Methods: Five eyes of 5 patients receiving Bowman layer transplant for advanced keratoconus in Royal Gwent Hospital (Newport, United Kingdom) were included. Preoperative and postoperative visual acuity; Kmax; Kmean, and corneal cylinder in the front cornea, 4. Read More

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Bowman Layer Onlay Grafting: Proof-of-Concept of a New Technique to Flatten Corneal Curvature and Reduce Progression in Keratoconus.

Cornea 2021 Apr 14. Epub 2021 Apr 14.

Netherlands Institute for Innovative Ocular Surgery, Rotterdam, the Netherlands; Melles Cornea Clinic Rotterdam, the Netherlands; Amnitrans EyeBank Rotterdam, the Netherlands; UAB, Birmingham, AL; and NIIOS-USA, San Diego, CA.

Purpose: The aim of this study was to describe a new surgical technique for flattening the corneal curvature and to reduce progression in eyes with advanced progressive keratoconus (KC) by using Bowman layer (BL) onlay grafting and to report on the preliminary outcomes of this procedure.

Methods: In this prospective interventional case series, 5 patients with advanced progressive KC underwent BL onlay grafting. After removal of the epithelium, a BL graft was placed and "stretched" onto the stroma, and a bandage lens was placed to cover the BL graft. Read More

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Outcomes After Corneal Crosslinking for Keratoconus in Children and Young Adults.

Cornea 2021 Apr 14. Epub 2021 Apr 14.

Byers Eye Institute, Stanford University School of Medicine, Palo Alto, CA.

Purpose: The aim of this study was to assess the effect of corneal crosslinking on vision and keratometry in children and young adults with progressive keratoconus.

Methods: A retrospective medical records review of patients aged 22 years or younger with keratoconus who underwent corneal crosslinking between January 2013 and November 2019 at Byers Eye Institute at Stanford University was conducted. Outcome measures included logarithm of the Minimum Angle of Resolution corrected distance visual acuity (CDVA); keratometry, including maximum keratometry (Kmax); pachymetry; and total wavefront aberration. Read More

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Corneal Neurotization: A Game-Changing Surgical Procedure for Neurotrophic Keratopathy.

Cornea 2021 Apr 14. Epub 2021 Apr 14.

Department of Ophthalmology, University Magna Græcia of Catanzaro, Catanzaro, Italy; Division of Oral and Maxillofacial Surgery, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Department of Ophthalmology, Ospedali Privati Forlì"Villa Igea," Forlì, Italy; Istituto Internazionale per la Ricerca e Formazione in Oftalmologia (IRFO), Forlì, Italy; Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy; and Unit of Maxillofacial Surgery, Head and Neck Department, ASST Santi Paolo e Carlo Hospital, University of Milan, Milan, Italy.

Purpose: The aim of this study is to describe techniques, results, and open issues of corneal neurotization (CN) for the treatment of neurotrophic keratopathy (NK).

Methods: An overview of the most important studies of CN is provided. The 2 main surgical approaches (namely, direct CN and indirect CN) with specific advantages and disadvantages are described. Read More

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Subpalpebral Antibiotic Lavage as Safe, Emergent, and Cost-Effective Management of Acute Infectious Keratitis Related to Contact Lens Overwear: Case Report and Literature Review.

Cornea 2021 Apr 14. Epub 2021 Apr 14.

Faculty of Medicine, University of New South Wales, Sydney, Australia; Royal North Shore Hospital, Sydney, Australia; and Department of Ophthalmology, Prince of Wales Hospital, Sydney, Australia.

Purpose: The aim of this study is to describe the technique of subpalpebral antibiotic lavage (SAL), which is a highly therapeutic, efficient, and cost-effective method for managing severe bacterial keratitis.

Methods: This case report describes a 26-year-old woman with severe bacterial keratitis in the right eye due to contact lens overwear, with progressive corneal thinning, a hypopyon, impending perforation, and marked visual loss to perception of light despite treatment with intensive topical antibiotics. This was managed with SAL that involves the insertion of a cannula transcutaneously into the upper conjunctival fornix to provide continuous antibiotic irrigation of the ocular surface. Read More

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Haze prevention following photorefractive keratectomy in brown eyes.

Authors:
A M Alfawaz

J Fr Ophtalmol 2021 Apr 12. Epub 2021 Apr 12.

Ophthalmology department, College of medicine, King Saud University, Riyadh, Saudi Arabia. Electronic address:

Objectives: To study corneal haze following myopic photorefractive keratectomy (PRK) in a high-risk population and to assess methods for minimizing the risk.

Methods: The medical records of 150 patients who underwent PRK were reviewed. A total of 300 eyes were included. Read More

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Association between Topographic Features of the Retinal Nerve Fiber Bundle and Good Visual Acuity in Patients with Glaucoma.

Curr Eye Res 2021 Apr 16:1-8. Epub 2021 Apr 16.

Department of Ophthalmology, Tohoku University Graduate School of Medicine, Sendai, Japan.

: Maintaining visual acuity in glaucoma patients is an important part of preventing the deterioration of quality of vision. We identified specific areas of the papillomacular bundle (PMB) that were strongly associated with visual acuity, based on en-face images derived from optical coherence topography (OCT) wide scans.: The study recruited 23 eyes of 21 glaucoma patients (age: 61. Read More

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[Epidemiology and the risk factors of myopia among children and youths in Yunnan province].

Zhonghua Yu Fang Yi Xue Za Zhi 2021 Apr;55(4):465-470

School of Public Health, Medical College of Soochow University, Suzhou 215123, China.

The purpose of the study was to describe the prevalence of myopia and to explore the associated factors of myopia among Han and Yi students aged 5-16 years in Yunnan province, China. A total of 5 971 Han and Yi students were included in the data analysis from the Yunnan eye study which was conducted from March to August, 2014. Information regarding demographic factors, socioeconomic status and lifestyle-related exposures were collected by per-designed questionnaires. Read More

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New Indicator of Children's Excessive Electronic Screen Use and Factors in Meibomian Gland Atrophy.

Am J Ophthalmol 2021 Apr 12. Epub 2021 Apr 12.

Assistant Professor, Georgetown University Hospital MedStar Washington Hospital Center; Surgeon, Ophthalmology, Visionary Eye Doctors.

Purpose: To evaluate the association of children's daily-electronic-screen-use with severe meibomian-gland-atrophy (MGA).

Design: Retrospective cross-sectional study METHODS: Children (6-17years) presenting at clinical practice December 2016-2017 were evaluated for ≥grade 2 MGA versus age-matched-controls with insignificant atrophy (Read More

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