21 Apr 07
The symptoms may include headache, eye pain, eye redness, haloes around lights...but these symptoms are mostly seen in the acute type of glaucoma. Most of the time, it is largely asymptomatic, the patient not knowing that his peripheral vision is gradually decreasing...until it's too late. There is no CURE for glaucoma. All treatment modalities, whether medical (eyedrops), laser or surgery are to control the progression of the disease, but the disease is still there. It's hereditary in the sense that people with a family history (a family member having glaucoma) has a higher chance of getting the same disease). I have written an article on glaucoma. You might want to take a look at it: http://hubpages.com/hub/Glaucoma
20 Mar 07
Glaucoma, the second-leading cause of adult blindness after age-related macular degeneration, often results from intraocular pressure (fluid pressure within the eye, or IOP) that is too high for the optic nerve to tolerate. At About age 40 and over have glaucoma, and, because the condition does not cause symptoms in its early stages, half of them do not know it. There are two types of glaucoma :- 1. open-angle 2. closed-angle glaucoma The distinction between open-angle and closed-angle glaucoma is made by examining the front part of the eye to check the angle where the iris meets the cornea. Both types of glaucoma can lead to blindness by damaging the optic nerve. Each day, the eye produces about 1 teaspoon of aqueous humor--a clear fluid that provides nutrients to, and carries waste products away from, the lens and cornea. Ordinarily, fluid production and drainage are in balance, and intraocular pressure (IOP) is between 12 and 22 mm Hg. In people with open-angle glaucoma who have higher-than-normal IOP levels, ophthalmologists suspect that a partial blockage traps the aqueous humor. Exactly how this happens is unclear. As more aqueous humor is produced than is removed, the blockage causes an increase in IOP. When IOP remains elevated or continues to rise, fibers in the optic nerve are compressed and eventually die, leading to a gradual loss of vision.