Getting Glaucoma Eye Test
Getting an early diagnosis for glaucoma can prevent permanent loss of vision, so it is important to have your eyes tested for glaucoma regularly. Most people should have a glaucoma eye test every two years.
Your ophthalmologist will always look for signs of glaucoma and other eye conditions during your routine eye test, but a more comprehensive set of diagnostic techniques can be used if you are at high risk. You may need a full glaucoma eye test if you are at high risk due to a family history of glaucoma, if something unusual is spotted during your routine eye check, or if you have already been diagnosed with glaucoma and your condition needs to be monitored.
How Your Eyes Are Tested for Glaucoma
Glaucoma causes various changes in your eyes that can be detected during your eye test. The glaucoma eye test includes several key checks that can reveal the earliest signs of a problem.
The 3 Key Tests for Glaucoma
1. Applanation Tonometry: Checks the pressure inside your eye by gently flattening your cornea.
2. Dynamic Gonioscopy: Looks for blockages in the area between your cornea and iris that might be preventing fluid from draining.
3. Stereoscopic Fundoscopy: A visual examination using an ophthalmoscope that can reveal abnormalities affecting your retina or optic nerve.
Additional Glaucoma Eye Tests
Additional tests can also be used to detect any signs of glaucoma that might have been missed or to evaluate the impact glaucoma has had on your eyes. The full range of eight glaucoma tests provides the best possible chance of detecting glaucoma.
4. Optical Coherence Tomography: An imaging technique used to get a closer look at your retina and optic nerve so any structural changes caused by glaucoma can be detected.
5. GDx Scan: A scan that assesses the thickness of the retinal nerve layer to detect glaucoma damage even before it causes sight loss.
6. Ocular Blood Flow: Detects any reduced blood flow in the eye, which can be caused by glaucoma.
7. Pachymetry: Measures the thickness of your cornea so that it can be used to get a more accurate reading of your intraocular pressure.
8. Visual Field Test: Maps your field of vision by asking when you can see small dots of light. The test checks for any sight loss, particularly around the periphery.
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