“ For a better comprehension of Glaucoma
For nearly century glaucoma is as one of the most common eye pathologies around the world, but also one of the leading causes of blindness. In fact, Glaucoma specifically in the United States, according to the book essentials of ophthalmology “ affects more than two million Americans of all age” (p. 108). Before going further in facts, a deeper look about such disease is necessary; an analysis of his origin, the causes and the solutions to the problem are indispensable. Moreover, an examination of why is African -American mostly affect by that kind of disease is addressed.
ORIGIN, DEFINITION, CAUSES
Douglas H. Johnson and Richard F. Brubaker in the book “essentials of ophthalmology” asserts that “the term glaucoma (glaukos, bluish green) dates from ancient Greek time and referred to blindness from multiple causes..” (p. 109). Further down, along the same way of thought they affirm that “Glaucoma is a group of diseases of the eye, having a common feature of progressive optic nerve
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For a better grasp of the condition of glaucoma, it is a prerequisite to being aware of what parts of the eye that involved. the optic nerve is the main organ engage and the main cause of glaucoma is a high pressure within the eye. Professor Richard F. Brubaker in the chapter glaucoma describing the causes of glaucoma states , “The normal flow of aqueous is from the posterior chamber to the anterior chamber through the pupil.Aqueous must squeeze between the lens and iris to enter the pupil” (p.110).Thus, that circulation is made possible by the angle that forms the lens and iris the fluid flows throughout a tissue, they called the trabecular meshwork which considers as the drain of the eye.When this drain is clogged aqueous cannot leave the eye, causing the fluid to back up, the backed up fluid causes increase pressure to build up within the eye that causes