DEAR DR. DONOHUE: Would you discuss glaucoma, specificallyopen-angle type, and its treatment? H. S.
DEAR H. S. : Glaucoma is increased pressure within the eye.The eye's front compartment contains a fluid slightly thicker thanwater. The normal eye regulates this pressure by balancing fluidproduction against what's drained out through its outlet duct.
In open-angle glaucoma, the most common type, pressure buildsbecause of abnormal drainage. The corner of the eye (where drainageoccurs) is wide open, but something is obstructing flow through theoutlet duct. Some readers confuse eye fluid pressure with bloodpressure rise. The two are not related.
If …
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