
Fort Lauderdale, FL-Contrast sensitivity and visual acuity improved in a small group of subjects with dry eye following instillation of one of three types of artificial tears administered in a study of tear layer disruption. The fact that only one solution produced an enhancement in visual performance suggests that practitioners need to match a patient's dry eye subtype with an appropriate artificial tear supplement to gain the most improvement, said William H. Ridder III, OD, PhD, FAAO.