Snellen chart

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display consisting of a printed card with letters and numbers in lines of decreasing size

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5 years, and there was a positive relationship with SFCT because we used BCVA according to the Snellen chart.
In a well-lighted room, Snellen chart was fixed on a wall at eye level.
uncorrected distant vision acuity of 20/40 or worse, with the Snellen chart the frequency of DVI rose to 35.
Use of the Illiterate E Snellen Chart might also have influenced the high referral figure in this study, by making it harder for Gr R learners to discern the letters, and highlighting laterality difficulties rather than reduced VA.
Best-corrected visual acuity (BCVA) was 20/20 right eye (OD) and 20/400 OS using the Snellen chart.
At the medical examination he was asked to read the Snellen Chart to test his visual capability.
Visual acuity was measured with a Snellen chart, both with spectacle correction and with a pinhole occluder.
There was dramatic improvement in visual acuity on snellen chart, after Nd-YAG laser capsulotomy and 25(50%) eyes showed visual acuity of 6/60 or less before laser while 15(30%) eyes had visual acuity of 6/60 or less after laser.
Horizontal and vertical heterophoria and the stimulus AC/A ratio were determined in the phoropter using the von Graefe method and a 6 x 6 matrix of 20/20 letters on the clinical, near, reduced Snellen chart [27].
Testing of visual acuity using the Snellen Chart (the standard eye chart used by eye care professionals to measure visual acuity) showed a significant improvement from baseline 14/20 to 17/20 after two months of treatment with Pycnogenol.
I tested the same subjects again using a standard Snellen chart at 20 feet.
Her vision was checked with the Snellen chart after each treatment, and after the sixth treatment, she was able to read the 20/50 line.
The screener used the Snellen chart since Paul seemed to have good letter recognition and he scored 20/30 in his right eye and 20/20 in his left eye.
Screening procedures, location of screening, lighting, and distance from the Snellen chart vary from school to school, and most schools do not comply with the standard.