Examination
To determine if you have a cataract, your eye doctor will perform an eye evaluation. Your visual acuity will be measured, as well as your refraction. Sometimes, a “brightness acuity test” will also be performed to determine how well you see in bright light conditions. Often, if a cataract is present, the visual acuity tested by the brightness acuity test will be significantly worse than the visual acuity measured in a dark room.
Other tests may include eye pressure measurement, pupil testing, a peripheral vision check and range-of-motion testing of the eye muscles. Your eyes may be dilated to help the doctor view the lens and the back part of the eye. Your doctor will perform a slit lamp examination to examine the eye and the lens. A retinal exam may also be performed during the dilated examination.