Information on Glaucoma
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By :
peter hutch
Submitted
2008-05-28 00:00:00 |
Glaucoma is a disease of the major nerve of vision, called the optic nerve. The optic nerve receives light from the retina and transmits impulses to the brain that we perceive as vision. Glaucoma is characterized by a particular pattern of progressive damage to the optic nerve that generally begins with a subtle loss of side vision (peripheral vision).
Glaucoma is an eye disease in which the passages that allow fluid in the eye to drain become clogged or blocked. This results in the amount of fluid in the eye building up and causing increased pressure inside the eye. This increased pressure damages the optic nerve which connects the eye to the brain. The optic nerve is the main carrier of vision information to the brain. Damage to it results in less information sent to the brain and a loss of vision.
New eye drops will continue to become available for the treatment of glaucoma. Some drops will be new classes of agents. Other drops will combine some already existing agents into one bottle to achieve an additive effect and to make it easier and cheaper for patients to take their medication.
Glaucoma is a condition in which the pressure inside the eye is raised. The increase in pressure usually happens when fluid (the aqueous humor) in the front part of the eye (the anterior chamber) doesn't drain away properly. Normally, the amount of fluid produced is balanced by the amount draining away, so the pressure in the front part of the eye stays constant.
Glaucoma refers to certain eye diseases that affect the optic nerve and cause vision loss. Most, but not all, of these diseases typically produce elevated pressure inside the eye, called intraocular pressure (IOP). Normal IOP is measured in millimeters of mercury and can range from 10-21 mm Hg. An elevated IOP is the most important risk factor for the development of glaucoma.
The exact causes of optic nerve damage from glaucoma is not fully understood, but involves mechanical compression and/or decreased blood flow of the optic nerve. Although high eye pressure sometimes leads to glaucoma, many people can also develop glaucoma with "normal" eye pressure.
Glaucoma is caused by a number of different eye diseases which in most cases produce increased pressure within the eye. This elevated pressure is caused by a backup of fluid in the eye. Over time, it causes damage to the optic nerve. Through early detection, diagnosis and treatment, you and your doctor can help to preserve your vision.
Glaucoma is actually a group of eye diseases that lead to damage of the optic nerve (the bundle of nerve fibers that carries information from the eye to the brain), which can then lead to vision loss and the possibility of blindness. Optic nerve damage usually occurs in the presence of high intraocular pressure; however, it can occur with normal or even below-normal eye pressure.
The eyes of a person with glaucoma are damaged when fluid builds up and increases pressure inside the eye. Glaucoma symptoms vary, but can include peripheral vision loss, sudden blurring of vision, and eye pain. In most cases, however, glaucoma displays no noticeable symptoms before it takes away the vision of its victim. Thankfully, with proper preventative eye care, it is possible to keep glaucoma from affecting your life.
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