December 1985
Volume 26, Issue 12
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Articles  |   December 1985
Effect of intraocular pressure on uveoscleral outflow following cyclodialysis in the monkey eye.
Investigative Ophthalmology & Visual Science December 1985, Vol.26, 1745-1749. doi:
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      C B Toris, J E Pederson; Effect of intraocular pressure on uveoscleral outflow following cyclodialysis in the monkey eye.. Invest. Ophthalmol. Vis. Sci. 1985;26(12):1745-1749.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Cyclodialysis was performed in both eyes of five cynomolgus monkeys. Two days later the intraocular pressure (IOP) had fallen from 17.7 +/- 0.8 to 7.1 +/- 1.4 mm Hg (P less than 0.001). At that time, both eyes were perfused for 30 min with fluorescein-isothiocyanate (FITC) dextran (MW 70,000), one at 35 mm Hg and the other at 4 mm Hg. Four pairs of control eyes (without cyclodialysis) were perfused in the same manner. At 4 mm Hg, uveoscleral outflow was 0.02 +/- 0.02 microliter/min in control eyes and 0.05 +/- 0.04 microliter/min in eyes following cyclodialysis. However, at 35 mm Hg, uveoscleral outflow in eyes with cyclodialysis increased to 2.13 +/- 0.47 microliters/min compared to 0.32 +/- 0.10 microliter/min in control eyes. Thus the "facility" of uveoscleral outflow in control eyes is 0.01 microliter/min/mm Hg and in eyes following cyclodialysis is 0.07 microliter/min/mm Hg. It is concluded that cyclodialysis results in a pressure-dependent increase in uveoscleral outflow.

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