Physical changes in and conditions of the eye associated with the normal aging process are discussed with reference to their impact on performance in physical and recreational activities. Descriptions are given of characteristic changes in visual acuity in the areas of: (1) presbyopia (inability to clearly focus near images); (2) sensitivity to glare; (3) contrast sensitivity; (4) light-to-dark adaptation; (5) depth perception; (6) glaucoma; (7) maculopathy; (7) eye movement reaction time; and (8) cataracts. Each condition is described, and the effects of the condition on vision is reviewed. It is noted that these conditions should be considered when planning physical and recreational activities for older adults. Suggestions are made on ways to minimize visual problems for physically active older adults, including: (1) encouraging older adults to have regular eye examinations and to wear corrective lenses if needed; (2) choosing well-lit areas for activities; (3) increasing contrasts in the visual environment; and (4) understanding problems older adults may have with glare. (JD)