Vision problems can occur at any age.
The sooner the problems are caught, the better the chances of treating them effectively. Children should have an eye exam by age 5, and earlier if there is a family history of eye problems. After age 5, vision screenings should be done every two years. From age 20 to 39, people who wear corrective lenses should have an exam every year. Those who don't wear glasses need exams only if there is increased risk of glaucoma, other eye disease present or a noticeable change in vision.