Limitations of Visual Acuity Charts

Visual acuity charts have limitations for a number of reasons. Fortunately, advanced technology is making it possible to assess contrast sensitivity—an important measure of visual performance gauging the ability to discern subtle differences in the brightness of adjacent areas of objects so that edges are more easily seen. Once armed with this data, current research is showing that nutritional intervention can yield measurable improvements in visual performance, often leading to better vision outcomes for patients.
- Mark W Roark, OD, FAAO