BACKGROUND Patients with initially low visual acuity were excluded from the therapy approval studies for retinal vein occlusion. But up to 28 % of patients presenting with central retinal vein occlusion have a baseline BCVA of less than 34 ETDRS letters (0.1). The purpose of our study was to assess visual acuity and central retinal thickness in patients suffering from central retinal vein occlu...

A retrospective review was conducted of 50 patients with bilateral Array multifocal intraocular lens implantation. The purpose was to assess their visual performance and adaptability to the visual world of multifocality. On binocular visual acuity examination all patients obtained, without any correction, Snellen 20/25 or more for distance and Snellen 20/40 (distant equivalent) or more for near...

The pattern electroretinogram (PERG) was used to measure the visual acuity and refractive state of nine American kestrels (Falco sparverius). Visual acuity was determined from psychometric functions of PERG amplitude vs. spatial frequency. Refractive state was measured by finding the trial lens that resulted in the highest acuity. All nine kestrels were found to be emmetropic. Their median visu...

PURPOSE To evaluate the visual acuity (VA) measurement by Snellen chart at three main Ophthalmology centers in Curitiba, compare these measurements with a computerized method for calibrating VA and also with the standard theory developed by Hermann Snellen. METHODS Descriptive study including 15 Ophthalmology clinics and a computerized method to measure the VA. Using a tape measure and a cali...

PURPOSE To compare visual acuity results obtained by use of the Lea Symbols chart with results obtained with Early Treatment Diabetic Retinopathy Study (ETDRS) charts in young children who are members of a population with a high prevalence of astigmatism. METHODS Subjects were 438 children ages 5 through 7 years who were enrolled in kindergarten or first grade on the Tohono O'odham Reservatio...

purpose: to evaluate the outcomes of vitrectomy for complications of branch retinal vein occlusion (brvo). methods: this retrospective study, included patients who underwent vitrectomy surgery due to the complications of brvo over an 11-year period. visual acuity and retinal condition were evaluated before and after surgery. results: the study included 30 eyes of 30 patients with mean age of 64...