Method of making intraocular lenses

Glass manufacturing – Processes – With destruction or delamination of transitory attached or...

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65 31, 65 36, 65 37, 65 38, 65 61, 65102, C03C 1900, C03B 1108, C03C 1500

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active

040713431

ABSTRACT:
Optical sections (lenses) of pseudophakoi having tangential holes are produced without drilling operations. A preform of lens material is drawn with embedded acid soluble rods and/or openings corresponding in diametral size and relative juxtaposition to the size, shape and locations of holes needed in a lens, a lens blank is cut from the drawn preform and portions of rods remaining therein are etched away prior to or following final edging and surface finishing of the lens blank.

REFERENCES:
patent: 3455666 (1969-07-01), Bazinet Jr.
patent: 3684468 (1972-08-01), Bode et al.
patent: 3879182 (1975-04-01), Strack
patent: 4015965 (1977-04-01), Deeg et al.
patent: 4028082 (1977-06-01), Kruan et al.

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