The most common type of glaucoma is open-angle glaucoma. The diameter of the openings of the trabecular meshwork becomes narrowed, increasing the resistance of fluid flow (the drain tube is suddenly reduced so pressure builds up.)
Primary open-angle glaucoma (POAG) affects approximately one percent of people over the age of fifty in the US. Open-angle means that the angle where the iris meets the cornea is as wide and open as it should be. It is the most common type of glaucoma. It is referred to as primary or chronic glaucoma.
In chronic glaucoma, there is a gradual imbalance between the production and outflow of the fluid in the back part of the eye. Pressure builds causing increased intraocular pressure, but there is no swelling on the cornea, and no other visible abnormalities. Because the patient experiences no symptoms, it often goes undetected, although vision impairment occurs.
Acute angle-closure glaucoma is a less common form. The intraocular pressure rises because the canal into which the fluid normally drains is suddenly blocked. The angle between the iris and cornea has a closed or narrow angle. It develops very quickly, is symptomatic, and damage is noticeable in a very short period of time, demanding immediate medical attention. Symptoms are sudden eye pain, a red eye and reduced vision. Immediate treatment is needed to relieve symptoms and to prevent permanent loss of vision.
Normal-Tension Glaucoma (NTG) is called low-tension or normal-pressure glaucoma. In normal-tension glaucoma the optic nerve is damaged even though pressure levels are normal.
Congenital glaucoma occurs in babies when there is incorrect or incomplete development of the eye’s drainage canals during the prenatal period. This condition is rare and often inherited. Microsurgery can often correct the structural defects. Other cases are treated with medication and surgery.
Arkansas Acupuncture Center | Powered by Flypaper | All Rights Reserved | Privacy Policy