A vision test is a way to measure how well you see. There are many different types of vision tests, but one of the most common is the eye chart test.

An eye chart test typically involves reading letters or symbols from a chart placed at a specific distance away. The chart contains a series of progressively smaller lines or symbols, and the patient is typically asked to read the smallest line or symbol that they can clearly see.

The results of the eye chart test can help doctors determine whether a patient needs glasses or contact lenses to correct …