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Of the different types of glaucoma, the most common are called open-angle glaucoma and closed-angle glaucoma. [7] Inside the eye, a liquid called aqueous humor helps to maintain shape and provides nutrients. The aqueous humor normally drains through the trabecular meshwork. In open-angle glaucoma, the draining is impeded, causing the liquid to ...
Phacomorphic glaucoma is an eye disease that can occur due to a neglected advanced cataract.In this, the mature cataractous lens cause secondary angle closure glaucoma.The presence of an asymmetric mature cataractous lens, shallow or closed anterior chamber angle, raised intraocular pressure (IOP) and other typical signs and symptoms of angle-closure glaucoma in the eye may lead to a diagnosis ...
Primary congenital glaucoma is classified into three subtypes: [4] true congenital glaucoma, which causes signs of increased intraocular pressure within the first month of life, infantile glaucoma, which presents between one month and three years, and; juvenile glaucoma, which becomes clinically apparent after three years of age and before age 40.
Glaucoma 1 is a form of primary open-angle glaucoma (POAG), which is characterized based on a specific pattern of defects in the optic nerve, thus causing visual defects. [ 5 ] [ 21 ] The disease causes an angle in the anterior chamber of the eye to be left open, which in turn causes the intraocular pressure to be increased.
Lens induced glaucomas or Lens related glaucomas are either open-angle or closed-angle glaucomas that can occur due to a neglected advanced cataract (cloudiness of the lens) or a dislocated lens. It is a type of secondary glaucoma. The angle-closure glaucoma can be caused by a swollen or dislocated lens.
Over many years, glaucoma has been defined by an intraocular pressure of more than 20 mm Hg. Incompatible with this (now obsolete) definition of glaucoma was the ever larger number of cases that have been reported in medical literature in the 1980s and 1990s who had the typical signs of glaucomatous damage, like optic nerve head excavation and thinning of the retinal nerve fiber layer, while ...