Abstract

The reliability of measurements of visual performance of subjects with low vision may be expected to be worse than the reliability of subjects with 'normal' vision. Whilst this is commonly accepted in clinical practice, there have been no studies which have demonstrated this effect. This is of practical significance as it is important to know the expected variance in performance to be able to determine what is a 'real' change from the usual measurement noise. In low vision there is often the requirement to monitor on-going ocular disease, and often this involves assessment of vision.

© 1995 Optical Society of America