الفهرس 
INTRODUCTION .Only 14 pages are availabe for public view
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Abstract
Glaucomas are a heterogeneous group of diseases which have in common the glaucomatous loss of ON fibers.
They show a multitude of morphological and psychological changes, such as a decrease in neuroretinal rim, secondary enlargement of the optic cup, deepening of the optic cup,. enlargement of parapapillary atrophy and loss ofRNFL (Hom et al, 1997 aud Joues et aL, 1999).
So, early detection of the disease with rapid initiation of proper treatment is the key for tight control of such a ”silent blinder” (Colemau, 1999).
Markers for early structural damage will help identify patients who require preventive therapy because they are at high risk for visual loss and will spare patients without damage the costs and morbidity of treatment (Caprioli et at., 1996).