Glaucom1 - • Angle-Closure Glaucoma occurs when the exit...

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Glaucoma Glaucoma is a condition in which the pressure inside the eye (intra-ocular pressure) increased and becomes abnormally high, leading to visual impairment and if left untreated, blindness. Glaucoma can be Primary of Secondary both with a number of subtypes and causes. Symptoms Symptoms of Primary Glaucoma depend upon the type of Primary Glaucoma present. There are two main types:- Angle-Closure Glaucoma (an ophthalmologic emergency) Sudden ocular pain Red inflamed eye Visual disturbance o Halos around lights o Blurring of vision Fixed mid-dilated pupil Nausea and Vomiting Open-Angle Glaucoma Painless Gradual progressive visual loss Causes In all forms of Glaucoma, the outflow of aqueous humour from the eye is impaired as a result of abnormalities within the drainage system of the front chamber of the eye or impaired access of the aqueous humour to the drainage system. The reason for the defect depends upon the type of glaucoma:-
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Unformatted text preview: • Angle-Closure Glaucoma occurs when the exit of the aqueous humour fluid is suddenly blocked. o Blockages are more common in those with shallow Anterior Chambers East Asians are at a greater risk o Blockages can be caused by the lens sticking to the posterior surface of the iris • Open Angle Glaucoma is a progressive condition that is associated with the following risk factors:-o Family history of Glaucoma o People of African descent are at greater risk • Secondary Glaucoma can be caused by:-o Long term steroid therapy o Severe diabetic retinopathy o Ocular trauma o Uveitis o Pigmentary glaucoma o Exfoliation syndrome Increased intraocular pressure causes nerve damage within the eye. The nerve damage involves loss of retinal ganglion cells in a characteristic pattern. Peripheral retinal ganglion cells are lost first leading to peripheral blindness....
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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Glaucom1 - • Angle-Closure Glaucoma occurs when the exit...

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