Visual acuity test
One of the first tests that you will encounter is a visual acuity test. This is performed using the familiar chart with rows of letters. You will be asked to read progressively smaller rows of letters until they become indistinguishable. Even if you have to guess, try to make out the smallest letters possible to help aid the eye care practitioner in obtaining a good idea of your visual acuity.
If you have, for example, 20/40 vision, this indicates that what you can read at 20 feet can be read by a normal eye at 40 feet. In addition to the distance visual test, a similar near vision test will probably be conducted.