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Noun1.Snellen - Dutch ophthalmologist who introduced the Snellen chart to study visual acuity (1834-1908)
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Another limitation was the use of Snellen over a testing method such as Logarithm of the minimal angle of resolution (logMAR), which is more based on the physiology of vision.
After refraction measurements were performed, BCVA was tested in all cases using the Snellen chart.
Tenders are invited for Supply of Digital Snellen optotype
5 (6/12), measured on the Snellen scale, with glasses or contact lenses.
Nervousness cost her the job, but she did win the part of Scarlet's bratty younger sister, Snellen.
Eddie Rodriguez rejoined the @OF team and sat alongside Brad Snellen, franchisee of Tropical Smoothie Cafe in Miami, and Michael Bohannon, vice president of Franchise Development at Interim HealthCare, for the interactive discussion.
Visual acuity was measured using Snellen chart and converted to logMAR (logarithm of the minimum angle of resolution) for statistical analysis.
Among all sugarcane stem borer, Chilo infuscatellus Snellen (Lepidoptera: Pyralidae) is a major pest of cane while Trichogramma chilonis Ishii.
The study tools used were a structured interview schedule, Snellen chart, Roman test type chart, measuring tape, eye shield, torch light, and pinhole.
Standard letter charts used to test visual acuity, such as the Snellen eye chart, are not consistent or sensitive enough to give an accurate, early diagnosis for AMD, a disease that will affect over 196 million people worldwide by 2020, projected to increase to 288 million by 2040.
Since then, numerous different visual acuity tests have become available (see Figure 1), with the advent of the Snellen chart in the 19th century being an important landmark in the standardisation of measurement procedures.