Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1977-09-06
1978-10-17
Levin, Stanford M.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
2604482B, 526279, 264 1, 351160, G02C 704, C08F23008
Patent
active
041205707
ABSTRACT:
Visual defects of the human eye in the form of refractive errors such as myopia, hyperiopia, astigmatism, athakis and keratoconus are corrected by a therapeutic method which includes the step of fitting to the patient's eye a corrective contact lens fabricated from a copolymer of a polysiloxanylalkyl acrylic ester and an alkyl acrylic ester. These visual corrections are made in accordance with this method with concommitent reduction in corneal edema since lenses so used have improved oxygen permeability. According to the preferred practice of this method, the lenses utilized have improved wettability which increases wearing confort and reduces interference with corneal metabolism, thereby extending the time period during which the corrective effect of the method is achieved. The corrective effect of this method is also enhanced by the capability of the lenses utilized therein to be precisely machined and polished.
REFERENCES:
patent: 2922807 (1960-01-01), Merker
patent: 2956044 (1960-10-01), Merker
patent: 3228741 (1966-01-01), Becker
patent: 3808178 (1974-04-01), Gaylod
Synthesis and Polymerization of Organosilicon Compounds Containing a Methacrylol Group, Bull. Acad. Sci. USSR Chem., No. 4, pp 467-472(1957).
Hirsch Joseph I.
Krubiner Alan M.
Levin Stanford M.
Syntex (U.S.A.) Inc.
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