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June 1982

Tinting of Intraocular Lens Implants

Author Affiliations

From the Departments of Ophthalmology and Biochemistry, University of Rochester (NY) School of Medicine and Dentistry.

Arch Ophthalmol. 1982;100(6):998. doi:10.1001/archopht.1982.01030031006024

• Intraocular lens (IOL) implants of polymethyl methacrylate (PMMA) lack an important yellow pigment useful as a filter in the visual process and in the protection of the retina from short-wavelength radiant energy. The ability to produce a yellow pigment in the PMMA used in IOL implants by exposure to near-ultraviolet (UV) light was tested. It was found that the highly cross-linked material in Copeland lens blanks was tinted slightly because of this exposure. The absorptive properties of lens blanks treated with near-UV light in this way approached that of the absorptive properties of human lenses. This finding shows that it is possible to alter IOL implants simply so as to induce a pale-yellow pigment in them to improve the visual process and to protect the retinas of IOL users.

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