Many individuals with glaucoma do not experience any symptoms. The condition cannot be diagnosed by a single test or measure. Instead, information from a variety of tests can be used to determine whether glaucoma is present in one or both eyes. At Rockville Eye Physicians, we have the ability to check for glaucoma through the use of dilated eye exams, eye pressure checks, and machine tests, such as the Humphrey Visual Field (HVF) test and Ocular Coherence Tomography (OCT).
Humphrey Visual Field
The visual field test is commonly used to detect and track the progression of glaucoma over time. The machine measures a patient’s peripheral and central vision. During this test, brief flashes of light that circumvent a central light are shown one at a time while a patient focuses on the central light. The patient presses a button each time he or she sees a light flash. This helps the machine map how much of the visual field the patient is able to see.
The OCT machine is also a commonly used machine for glaucoma testing. This machine is able to take cross-sectional images of the optic nerve that is located in the back of each eye. This is the nerve that is directly affected if glaucoma is present in the eye(s). By regularly having these OCT scans done, in addition to other in-office testing, the development or progression of glaucoma can be closely monitored.
The Fundus Photo machine can take photos of the interior lining of the back part of the eye. The camera is capable of zooming in on the structures located in the back of each eye, including the optic nerve. This provides the doctors with an actual image of the optic nerve that is located in the back of each eye, along with various other important structures.