What is the procedure of glaucoma screening?
I want to know about the procedure of glaucoma screening..?
Glaucoma is basically a rise in the pressure of fluid inside the eyeball. To diagnose glaucoma a measurement of that pressure is needed. In the 'old days' a tonometer would be used. This would be placed on the eyeball after a local anaesthetic had been dropped into the eye and the pressure could be read. Nowadays it is a very simple procedure, often done during a normal eye test. Basically a puff of air is blown onto the eyeball. The amount of displacement this causes can be measured optically and the pressure reading obtained. So basically all that happens is that a jet of air is blown onto the eyeball!
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Glaucoma testing isn't just about taking the eye pressure and tonometers are still used and considered to be the most accurate way to check the pressure. Many people have an elevated eye pressure but do not have glaucoma. This is typically termed ocular hypertension and needs no treatment.
Glaucoma is diagnosed with ocular pressure testing, an OCT or HRT of the optic nerve to see if there is pitting damage due to the increased pressure in the eye, and visual field testing to check if any peripheral vision has been lost. Glaucoma damages the optic nerve. The pressure in the eye builds up and pushes the optic nerve back, causing a pit, or as we in ophthalmology call it, a cup. Cupping of the optic nerve is concerning when the cup to disc ratio (the size of the optic nerve compared to the amount of cupping) is over .5 or .6 depending on the doctor. If your doctor is concerned he will order more testing to determine if what he sees is glaucoma or ocular hypertension.
There is no screening other than the glaucoma eye exam itself which is free via Lions Club or Medicare health insurance if have the following risk factors:
African American 50 or older
Hispanic 65 or older.
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Had the operation as described here : http://ptosis.hubpages.com/hub/Peripher … Experience
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