subject: Cataracts - Causes, Symptoms and Treatment [print this page] A person can also suffer from double visionA person can also suffer from double vision. He/she can see several images of the same object. In fact, if a person wears prescription glasses, then his number increases frequently. Cataract can be detected through complex medical exams. Such exams can reveal how well you can see from different distances. Such tests are visual acuity test, tonometry and dilated eye exam. In the former, an eye chart is used to measure your eyesight. In the dilated eye exam, the eye pupil is stretched through drops. After that, the eye specialist inspects the retina through a magnifying lens to find any eye damage. The vision is not normal after this exam is over. In fact, the near vision is obscure for hours. In the last kind of test, tonometry, an instrument is used to gauge the eye pressure. Eye drops that reduce the pain are added before commencing the test. In this ailment, a clump forms on the pupil of the eye
