How should I know I have glaucoma?
At first, open-angle glaucoma has no symptoms. It causes no pain.
Vision stays normal. Glaucoma can develop in one or both eyes.
Without treatment, people with glaucoma will slowly lose their
peripheral (side) vision. As glaucoma remains untreated, people may
miss objects to the side and out of the corner of their eye. They
seem to be looking through a tunnel. Over time, straight-ahead
(central) vision may decrease until no vision remains.
Many people may know of the "air puff" test or other tests used to
measure eye pressure in an eye examination. But, this test alone
cannot detect glaucoma. Glaucoma is found most often during an eye
examination through dilated pupils. This means drops are put into
the eyes during the exam to enlarge the pupils. This allows the eye
care professional to see more of the inside of the eye to check for
signs of glaucoma.
What are the
types of glaucoma?
Open angle glaucoma:
About half of Americans with chronic glaucoma don't know they have
it. This common type of glaucoma gradually reduces your peripheral
vision without other symptoms. By the time you notice it, permanent
damage already has occurred.
Glaucoma: Angle-closure or narrow-angle glaucoma produces sudden
symptoms such as eye pain, headaches, halos around lights, dilated
pupils, vision loss, red eyes, nausea and vomiting. These signs may
last for a few hours, then return again for another round.
Symptoms of chronic glaucoma following an eye injury could indicate
secondary glaucoma, which also may develop with presence of eye
infection, inflammation, a tumor or an enlarged cataract.
Computerised Visual Field Analysis:
A visual field test is an examination that may be performed to
analyze a patient's visual field. the test consists basically of
responding every time a flash of light is perceived, all the while
looking straight ahead. This test can be completed anywhere from
about 10-30 min depending on the patients co-operation.
Apachymeter is a medical device used to measure the thickness of the
eye's cornea. It is used to perform Corneal pachymetry and is useful
in screening for patients suspected of developing glaucoma among
other uses. Pachymetry can help your diagnosis, because corneal
thickness has the potential to influence eye pressure readings. With
this measurement, your doctor can better understand your IOP reading
and develop a treatment plan that is right for you. The procedure
takes only about a minute to measure both eyes.