HOW IS GLAUCOMA DETECTED?
Dr. Jim Martin 01/07/2016
Your doctor has multiple tools to test for and monitor glaucoma even if you have no symptoms. Below is a look at the tools used to diagnose glaucoma:
This tool measures intraocular pressure (pressure in the eye). There are two types of tonometers. One is applanation in which a numbing drop is used in order to touch the eye to take a measurement. The second type, a non contact tonometer, does not touch the eye.
This tool is used to measure the thickness of your cornea. Measuring corneal thickness helps your eye doctor to get a better understanding of your intraocular pressure.
Visual Field Test
The initial damage from glaucoma usually results in the peripheral vision being affected first. By testing your field of vision, your eye doctor can determine the extent to which high intraocular pressure has damaged your optic nerve.
Your eye doctor will use this tool to examine your optic nerve directly by looking through your pupil. The appearance of your optic nerve can indicate whether it has been damaged by glaucoma and the extent of any damage.
This test is used to examine tissue at the back of the eye and the angle where the iris meets the cornea. After the eye is numbed with eye drops, your eye doctor will place a handheld contact lens containing mirrors on your eye. The mirrors allow the doctor to see inside the eye from different directions. This allows them to see if the angle where the iris meets the cornea is a narrow one or if it is open. A narrow angle may mean that there is an increased likelihood of the angle closing suddenly. Sudden closure can result in an acute glaucoma attack. If it is wide, this can indicate open-angle (chronic) glaucoma.
Optical Coherence Tomography (OCT)
This test images a cross-section of the optic nerve as well as the thickness of the nerve fiber layer surrounding the optic nerve. These readings are then compared to a normative database to see if your readings show any abnormalities.
The doctors at Broome Optical in Amarillo can perform the tests to diagnose and monitor glaucoma. Contact us today to make an appointment for glaucoma testing.