open-an·gle glaucoma .ō-pən-'aŋ-gəl- n a progressive form of glaucoma in which the drainage channel for the aqueous humor composed of the attachment at the edge of the iris and the junction of the sclera and cornea remains open and in which serious reduction in vision occurs only in the advanced stages of the disease due to tissue changes along the drainage channel compare ANGLE-CLOSURE GLAUCOMA
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any glaucoma in which the angle of the anterior chamber remains open, but filtration is gradually diminished because of the tissues of the angle; called also chronic, simple, or wide-angle g.Medical dictionary. 2011.