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Glaucoma, chronic open-angle

Glaucoma without evident secondary cause which follows a chronic time course and occurs in the presence of an open anterior chamber angle (the trabecular meshwork is visible on gonioscopy). In this guideline the term COAG is used regardless of the level of intraocular pressure and has been extended to include COAG associated with pseudoexfoliation and pigment dispersion (unless specifically stated otherwise).