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July 1987

Amelioration of Experimental Lipid Keratopathy by Photochemically Induced Thrombosis of Feeder Vessels

Author Affiliations

From the Department of Ophthalmology, Bascom Palmer Eye Institute (Drs A. Mendelsohn, Alfonso, Forster, and Dennis and Messrs Lieb and G. Mendelsohn), and the Cerebral Vascular Disease Research Center, Department of Neurology (Dr Watson), University of Miami School of Medicine.

Arch Ophthalmol. 1987;105(7):983-988. doi:10.1001/archopht.1987.01060070127041

• The photochemical interaction between intravenously injected rose bengal dye and 514.5-nm argon laser irradiation was employed to initiate permanent thrombotic occlusions in the corneal neovasculature of rabbit eyes with experimentally induced lipid keratopathy. This photothrombotic procedure did not produce corneal edema or polymorphonuclear leukocyte infiltration, as was found in previous studies employing laserinduced photocoagulation. Thus, by means of the new technique, we avoided the formation of additional neovascularization and lipid deposition. Vascular occlusion by photothrombosis, effected with 8.5 times less incident intensity and 27.5 times less total light exposure than with photocoagulation, yielded an average reduction of corneal cholesterol content of 36% as opposed to an increase of 24% found with previous argon laser photocoagulation.

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