This article, based on a report prepared for the International Council of Ophthalmology (ICO)
and the International Society for Low Vision Research and Rehabilitation (ISLRR), explores …

Purpose: The purpose of this study was twofold: first, to prospectively compare visual acuity
(VA) scores obtained with Snellen charts versus Early Treatment Diabetic Retinopathy Study …

The need for precision in visual acuity assessment for low vision research led to the design
of the Bailey–Lovie letter chart. This paper describes the decisions behind the design …

Purpose A paper published by the author in 1988 in this journal provided some important
findings about the lack of precision of visual acuity (VA) measures made with commonly …

Purpose. To provide a comprehensive description of vision function beyond acuity in older
individuals. Methods. A sample of 900 individuals between the ages of 58 and 102 years …

purpose. To determine the sensitivity to change and specificity achieved when published
test–retest variability (TRV) data are used to determine whether measured changes in …

Purpose. The Mars Letter Contrast Sensitivity Test (initially known as the Lighthouse Letter
Contrast Sensitivity Test) is similar in design to the Pelli-Robson Test but may offer several …

Background. Logarithm of the minimum angle of resolution (logMAR) charts come in a
variety of alternative forced-choice (AFC) formats and can be used with a variety of different …

This study compares the clinical through-focus visual acuity (VA) in patients implanted with
different intraocular lens (IOL) to optical bench testing of the same IOLs to evaluate the …

purpose. To measure visual acuity (VA) on Early Treatment Diabetic Retinopathy Study
(ETDRS) charts with a modified faster procedure (ETDRS-Fast), based on adaptive …