A. Eyesight test chart.
B. Alphabet chart.
D. None of these
Brief Facts about Snellen Chart:
Snellen chart is often seen in eye hospitals. This Snellen chart or eye chart is used by an ophthalmologist (Eye specialist) or osteopathic to check the visibility of the eye. Moreover, the Snellen Chart is named so because it was developed by an Ophthalmologist i.e. Herman Snellen. It was developed by him in the year 1862 as a measurement tool for the acuity formula developed by his professor Franciscus Cornelis Donders. Currently, many eye specialists use the modern chart named as Log MAR Chart.