Glendale Office • Scottsdale Office • Surgical Centers

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An exam for glaucoma usually begins with a basic vision test to determine how well you can see with or without corrective lenses. The following are more specialized procedures for diagnosing and assessing glaucoma:

Intraocular Pressure Test

This test measures pressure inside the eye, which is one of the main causes of glaucoma. The test can be conducted using an applanation tonometer, where a pressure-sensitive tip is gently placed against the eye, a rebound tonometer (iCare rebound), or a pneumotonometer to obtain the intraocular pressure.

Visual Field Test

Loss of peripheral vision is often one of the first signs of glaucoma. During this test, one eye will be covered and you will be asked to look straight ahead at a fixed space. Then you will be asked to respond to blinking lights at different points in your peripheral vision. It is imperative that you remain still and focused during this test to ensure its best accuracy. At our practice, we utilize the most advanced and patient friendly visual testing system available, the Octopus visual field machine.

Fundus Photography

Digital Photographs will be taken of your optic nerve. This helps the doctors to evaluate the health of your optic nerve and to track any changes from year to year.


During this procedure, special drops will be placed in your eyes to dilate your pupils, giving your doctor a larger "window" to see inside the eye. The main objective is to observe the retina and the optic nerve, which can be damaged by pressure inside the eye.


This test uses a mirrored lens to look within the anterior chamber angle of the eye where fluid filters out of the eye. This test allows us to assess the anatomy of the eye. A narrowed angle can close off the drainage system of the eye, causing increased pressure and risk of injury to the eye. This test is an important way to establish whether the patient is experiencing closed angle glaucoma. This test will also help guide our treatment decisions, which may include medicines, laser, or surgery.

Corneal Thickness (pachymetry)

This test measures the thickness of the cornea, or the front surface of the eye. Thick corneas tend to over-estimate intraocular pressures, while thin corneas tend to under-estimate intraocular pressures.