Visual Field Test

The primary function of the visual field test is to measure the patient’s peripheral and central vision with repeated light stimulus. During the test, lights of varying intensities appear in different parts of the field machine while the patient’s eye is focused on a central spot. The patient clicks a button with each light that they see. The brightness and speed of the test is adjusted for each patient’s needs. The results are compared with those of the age-matched normal population as well as tracking each individual patient's possible changes over time.

Visual field testing is often performed to screen for glaucoma but also may include:

• Ptosis (possible drooping of the eyelid)
• Plaquenil toxicity
• Esterman Binocular testing
• Neurology

A baseline test is performed along with follow-up testing to check for possible changes over time.