Calculation of Snellen's Letter size

Conversions Between Letter, LogMAR, and Snellen Visual Acuity Scores

Includes Red and Green color bars for an easy and helpful place to start administering the test. Chart uses true Snellen optotypes for acuity vision

Snellen Eye Chart for Visual Acuity and Color Vision Test

Calculation of Snellen's Letter size - Snellen视力表计算_哔哩哔哩_bilibili

Conversion of LogMar Visual acuity into Snellen

Font sizes used in Snellen chart when viewed at 20 feet and adapted

Volume 5, Chapter 51. Measuring Vision and Vision Loss

Almanac: The eye chart

Illustration and a list of dimensions for rows of optotypes from 10

Principle of visual acuity charts class

Principle of visual acuity charts class

What is 6/60 Visual Acuity?