snellen | |
snellenberger |
snellen | (n) Dutch ophthalmologist who introduced the Snellen chart to study visual acuity (1834-1908), Syn. Hermann Snellen |
snellen chart | (n) display consisting of a printed card with letters and numbers in lines of decreasing size; used to test visual acuity |
snellen test | (n) a test of visual acuity using a Snellen chart |