Researches of Glaucoma

[augest]

Funded by Alcon Research Ltd, a research analyzed Medicare claims and payments for glaucoma surgery between 1997 and 2006. According to results published in July 2009, the number of glaucoma surgeries was increasing and Medicare payments for these procedures were decreasing. In detail, procedure numbers and Medicare payments were in decrease from 1997 to 2000. After 2000, glaucoma procedures increased and payments from Medicare for some types of procedures decreased. According to researchers of the study, Medicare payments have long been an important component of the cost of glaucoma. Once these payments from Medicare are cut off, patients will be reluctant to receive newer technologies such as drainage devices. And some people who have surgery still to pay money for eyeglasses to protect their eyes from wind, dust and sunlight.

Glaucoma medications deserve careful evaluation before being prescribed to pregnant women. Beta-blockers during pregnancy can be used to decrease fluid production in the eye. Women who take this medication impose no significant difference in infant weight. But other types of anti-glaucoma eye drops taken by pregnant women have been reported to cause higher risks of having low birth weight infants. Optical beta-blockers are the best drug for pregnant women for glaucoma treatment, as concluded by a study published in the British Journal of Ophthalmology.

Currently, about 2% of Americans above 40 is affected by glaucoma and 10% of them have suspected glaucoma. Some researchers are working out when and how glaucoma produces disabilities. Researchers at Wilmer Eye Institute of Johns Hopkins University have conducted a study with 1,154 participants of an average age of 79.9, who have been asked to read text aloud. The study shows there is clear impairment in these old people in verbal and general reading skills.

The FDA approved Latisse for cosmetic uses in December 2008. Produced by Allergan Inc., the drug was originally used to control internal eye pressure to prevent potential eye damage from glaucoma. An unexpected result was that the drug was also found to bring a side effect of thicker eyelashes. After appropriate clinical trials for safety, Latisse has now been launched for cosmetic use.

[Haren]

Glaucoma is a disease in which the optic nerve is damaged,leading to progressive,irreversible loss of vision.It is often,but not always,associated with increased pressure of the fluid in the eye.Glaucoma often affects both eyes,usually in varying degrees.One eye may develop glaucoma quicker than the other.

[Steffanwolf]

Glaucoma is a group of diseases that can damage the eye's optic nerve and result in vision loss and blindness. Glaucoma occurs when the normal fluid pressure inside the eyes slowly rises. The major risk factor for most glaucomas and focus of treatment is increased intraocular pressure.

[mtptl77]

Elevated pressure in the eye is the main factor leading to glaucomatous damage to the eye (optic) nerve. Glaucoma with normal intraocular pressure is discussed below in the section on the different types of glaucoma. The optic nerve, which is located in back of the eye, is the main seeing nerve for the eye. This nerve transmits the images we see back to the brain for interpretation. The eye is firm and round, like a basketball. Its tone and shape are maintained by a pressure within the eye (the intraocular pressure), which normally ranges between 8 and 22 mm (millimeters) of mercury. When the pressure is too low, the eye becomes softer, while a too high pressure causes the eye to become harder. It turns out that the optic nerve is the most susceptible part of the eye to high pressure because the delicate fibers in this nerve are easily damaged.

The front of the eye is filled with a clear fluid called the aqueous humor, which provides nourishment to the structures in the front of the eye. This fluid is produced constantly by the ciliary body, which surrounds the lens of the eye. The aqueous humor then flows through the pupil and leaves the eye through tiny channels called the trabecular meshwork. These channels are located at what is called the filtering, or drainage angle of the eye. This angle is where the clear cornea, which covers the front of the eye, attaches to the base (root or periphery) of the iris, which is the colored part of the eye. The cornea covers the iris and the pupil, which are in front of the lens. The pupil is the small, round, black-appearing opening in the center of the iris. Light passes through the pupil, on through the lens, and to the retina at the back of the eye. Please see the figure, which is a diagram that shows the filtering angle of the eye.
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