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Surv Ophthalmol. 2001 May;45 Suppl 3:S325-31; discussion S332-4.

Three common assumptions about ocular blood flow and glaucoma.

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Discoveries in Sight, Devers Eye Institute, Portland, OR 97210, USA.


Although substantial indirect evidence exists to link altered ocular blood flow to glaucoma, it must be remembered that the validity of investigations in this area depends on acceptance of three basic assumptions: 1) ischemia directly causes or increases the susceptibility of the optic nerve to glaucomatous damage; 2) optic nerve vascular anatomy and physiology allows identification of the critical vascular beds in optic nerve disease; and 3) current measurement techniques provide the ability to monitor important vascular beds. The hypotheses underlying these assumptions are examined.

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