Visual Acuity Tests are used to evaluate an individuals’ ability to view fine details, both at close range, and at a distance. Traditionally, individuals who perform optimally during a visual acuity test are said to have 20/20 vision. Those who have a difficult time seeing objects at a distance, but have good vision at close range are said to have nearsightedness, while those who strain to see objects at both distance and near will be diagnosed with farsightedness. In most cases, both conditions require the use of corrective eye wear.
Most eye exams will also consist of a Pupil Function Test. In this test, a bright light is shown directly into the eye, at which time the pupil is expected to constrict. When the light is removed, the pupil should dilate back to its normal size. Pupils that are dissimilar in size, or which do not respond appropriately to light and dark may suggest neuropathy. In more severe cases, unresponsive pupils may be indicative of neurologic damage.