Glaucoma

What is glaucoma?

Glaucoma is an eye disease that occurs in two forms, the open-angle glaucoma found in about 70% of glaucomas and jordans for sale the angle-closure glaucoma, which occurs in about 10% of all cases. The remaining 20% are more difficult to classify.

Usually glaucoma develops from a blockage of the Schlemm’s canal. The eye fluid has no normal way of drainage when this happens and this will raise the intraocular pressure (IOP) in most, but not all cases.

Common causes of open-angle glaucoma include:
• Chronic use of systemic corticosteroids;
• Diabetes;
• Family history;
• High blood pressure;
• Older age;
• Elevated IOP;
• Myopia (shortsightedness); and
• Race (those of African-American descent are more prone).

What are the signs and symptoms of glaucoma?

Unfortunately there are no early signs and symptoms for glaucoma.

Late symptoms are loss of the visual fields.. First the vision in the periphery tends to be affected, later central vision is affected. Other symptoms can be blurred vision and intermittent eye pain.

How is glaucoma diagnosed?

An ophthalmologist will do 4 tests to determine whether or not the patient has glaucoma:
• Thorough eye examination including gonioscopy;
• IOP measurement;
• Visual field examination; and
• Examination of optic discs (using slit lamp).

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