VisionCheck does not replace the need to see your eye doctor. Eye care professionals conduct comprehensive eye health exams that consist of a wide range of tests for glaucoma, cataracts, and other conditions. VisionCheck only measures refractive error, which is a fraction of the tests needed to evaluate eye health. We strongly recommend that everyone continue to get a full eye health exam annually. VisionCheck should be used regularly between annual visits to track and record vision changes over time.