الفهرس 
Trabeculeciomy
Surgery on the ciliary bodyOnly 14 pages are availabe for public view
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Abstract
Clinioa.l interpretation of !i0nio~.~pi;:: findiIlgs
Both primary and secondary gLaucomaa are diV’ided into two major classifications based on the gonioscopic
observation of an open angle or of a potential or actual
angle closure. The \’Iideatangles are characteristically seen in myopia and 3phaki:(. Such eyes have a deep chamber
end c:.flat iris plane tha.t makeB an a.ngle of about
Q 45 witn the trabecular surface. As the chamber depth shallows. the angle narrous. There is both increasing
relati ve pupillary block and increasing danger of angle
<J
closure as the angle becomes smaller tha.n 20. For one to compare different angles, it is convenient to have
a grading system. The folloWing descriptive classification
includes numeric grades of angles for convenience in recording on office charts. The mo~t widely open
angle is a Grade 4, and a closed angle is Gra.de 0 (Reels
I-I. 1-2, I-4, and 1-5). Thore are some very narrOW an~Les in which it is impossible io decide wnether or
not an opening exiats between the iris root.