Results 161 to 170 of about 40,438 (183)
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Changing from Snellen to LogMAR: debate or delay?
Clinical & Experimental Ophthalmology, 2006AbstractVisual acuity is the most commonly used test to assess visual function. The Snellen chart is the universally accepted tool for testing visual acuity despite its poor reliability and reproducibility. Newer logMAR charts are now available that have negated the disadvantages of the Snellen chart.
Hussain, Badrul +3 more
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The Dependency of LogMAR Visual Acuity Measurements on Chart Design and Scoring Rule
Optometry and Vision Science, 2002ABSTRACT: Background. Visual acuity, increasingly measured using a logarithm of the minimum angle of resolution (logMAR) chart, is the “gold standard” by which the outcomes of the vast majority of clinical trials or interventions are judged.
Charlotte A, Hazel, David B, Elliott
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Snellen or logMAR in clinical ophthalmology
Acta Ophthalmologica, 2010Abstract Purpose The question remains if visual acuity measurements in clinical ophthalmology should use the well known Snellen notation or instead should switch to the slightly less intuitive logMAR notation Methods The differences in Snellen and logMAR notation will be explained in order to understand the (dis)advantages of each notation Results When
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Is conversion of decimal visual acuity measurements to logMAR values reliable?
Graefe's Archive for Clinical and Experimental Ophthalmology, 2019To assess if conversion of decimal visual acuity (VA) to logMAR is reliable for clinical and research purposes.Right eye VA of 74 consecutive patients was measured with 5 min interval, using (a) the ETDRS chart (VAlog), (b) a decimal chart at 6 m (VA6m), and (c) a decimal chart at 4 m (VA4m). VA was the smallest line whereby four of five optotypes were
Anna-Bettina Haidich +2 more
exaly +3 more sources
Journal of Cataract and Refractive Surgery, 2014 PURPOSE: To report the outcomes of changes in straylight before and after phacoemulsification in eyes with preoperative corrected distance visual acuity (CDVA) better than 0.1 logMAR.
Ruth Lapid-Gortzak, Maarten P Mourits
exaly +2 more sources
Effects of dipivefrin and pilocarpine on pupil diameter, automated perimetry and LogMAR acuity
Graefe's Archive for Clinical and Experimental Ophthalmology, 1999A study was carried out to ascertain, in ophthalmologically normal subjects, the short-term effects of dipivefrin hydrochloride 0.1% on visual performance and make comparisons with pilocarpine.Twelve normal volunteers aged 20-26 years attended on three occasions.
D F, Edgar +5 more
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[Repeatability and reliability of the visual acuity examination on logMAR ETDRS and Snellen chart].
Ceska a slovenska oftalmologie : casopis Ceske oftalmologicke spolecnosti a Slovenske oftalmologicke spolecnosti, 2012The main goal of our study was to prove the statistical significant correlation between repeated measurements and test-retest variability TRV expressed with confidence interval CI according to Bland-Altman's method on 95% level of statistical confidence.
P, Veselý, S, Synek
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An evaluation of logMAR vision test charts for near vision using Chinese characters
Clinical and Experimental Optometry, 1997Near visual acuity (VA) test charts and a set of reading cards using simplified Chinese characters were designed based on the logMAR principle.
Yan Mei Hao, Alan W Johnston
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Comment on: ‘Conversion of Snellen visual acuity to LogMAR visual acuity’
Eye, 2022Roselin C. Charles, N. Andrew Frost
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