Results 261 to 270 of about 1,072,264 (305)

Relative Letter and Position Difficulty on Visual Acuity Charts from the Early Treatment Diabetic Retinopathy Study

American Journal of Ophthalmology, 1993
Emily Y Chew, Valeria Freidlin, Sylvan B Green   +2 more
exaly   +2 more sources

LETTER CONTRAST SENSITIVITY IN RETINITIS PIGMENTOSA PATIENTS ASSESSED BY REGAN CHARTS

Retina, 1989
Kenneth R Alexander, Deborah J Derlacki, G A Fishman   +2 more
exaly   +2 more sources

Is it time to confine Snellen charts to the annals of history?

Ophthalmic and Physiological Optics, 2015
Jan E Lovie-Kitchin
exaly   +2 more sources

Practical Charts for Sizing Neutral Grounding Elements for Machine-Based Distributed Energy Source Step-Up Transformers

IEEE Transactions on Power Systems, 2022
One of the challenges resulting from the adoption of machine-based distributed energy resources lies within the intersection of protection and performance grounding.
Alex Nassif, J. R. Aguero, M. Dong
semanticscholar   +1 more source

Letter legibility and chart equivalence

Ophthalmic and Physiological Optics, 2000
Summary Introduction : We tested the appropriateness of the assumption that charts, which only vary in having different sequences of five letters per line, chosen from the same 10 letter set, can be regarded as equivalent for the purpose of making valid comparisons of visual acuity.
C W, McMonnies, A, Ho
openaire   +2 more sources

[Comparison of visometry by Sivtsev and ETDRS charts].

Vestnik oftal mologii, 2022
Most foreign authors currently recommend the protocol and charts developed for the Early Treatment Diabetic Retinopathy Study (ETDRS) as the gold standard for evaluation of visual acuity (VA) in clinical trials and studies. Not every medical facility has
M. Chedly, A. E. Aslamazova, I. Blinova, A. V. Golovchenko, V. Siplivy   +4 more
semanticscholar   +1 more source

Line‐by‐line visual acuity scoring equivalence with letter‐by‐letter visual acuity scoring

Clinical and experimental optometry, 2021
Clinical relevance A scoring criterion of three-or-more letters correct on a line results in the most equivalent visual acuity score to letter-by-letter scoring. Background Using the criterion of three-or-more letters correct on a line of five letters to
Jason S. Ng, A. Wong
semanticscholar   +1 more source

Visual acuity loss in patients with age-related macular degeneration measured using a novel high-pass letter chart

British Journal of Ophthalmology, 2016
Conventional Logarithm of the Minimum Angle of Resolution (logMAR) acuity is the current gold standard for assessing visual function in age-related macular degeneration (AMD).
N. Shah, Steven C. Dakin, Sarah Dobinson, A. Tufail, C. Egan, R. Anderson   +5 more
semanticscholar   +2 more sources

On the Smith Chart (Letters)

IEEE Transactions on Microwave Theory and Techniques, 1978
The Smith Chart is the complex plane of the reflection coefficient. The unique contribution of P. H. Smith was the superposed grid for identifying impedance or admittance values; however, students, when being introduced to the Chart, can often be caught up in the superposed grid.
openaire   +1 more source

Letter: Quality control charts in the clinical laboratory.

American journal of clinical pathology, 1975
C. D. Russell
openaire   +3 more sources