Visual Acuity Tests
A. Checkerboard- the observer has to tell which checkerboard is different.
B. Landholt C- the observer has to identify the location of the gap, e.g.. top, left, right or bottom.
C. Grating- the observer has to indicate whether the grating is vertical or horizontal.
D. Snellen letters- the observer has to identify the letter. This is probably the best known test. With the letter shown, for example, if a person can not resolve the gap in the letter it could easily be confused for the letter P.
Visual Acuity Text
Table of Contents
Table of Contents [When not using framtes]