Bifocal contact lens

Details Bifocal contact lens Bifocal contact lens

1982-08-19

1986-03-04

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 704, G02C 706

Patent

active

045737754

ABSTRACT:
A soft, multifocal contact lens of the segmented type intended to translate vertically between the near-vision and distance-vision modes, characterized in that the superior portion of the lens is equiangularly truncated from points on either side of the vertical axis at the apex of the lens to points on each respective side proximal the horizontal axis of the lens.

REFERENCES:
patent: D191140 (1961-08-01), Gates et al.
patent: D191964 (1961-12-01), Gates et al.
patent: D203357 (1965-12-01), Adler
patent: D205046 (1966-06-01), Adler
patent: D206190 (1966-11-01), Adler
patent: 3212097 (1965-10-01), Adler
patent: 3431327 (1969-03-01), Tsuetaki
patent: 3597055 (1971-08-01), Neefe
patent: 3794414 (1974-02-01), Wesley
patent: 4095878 (1968-06-01), Fanti
Ultracon (advertisement); "Contacto"; vol. 3, No. 11, Nov. 1959, p. 361.
"Review of Optometry" (Nov., 1981), Bausch & Lomb advertisement re Bifocal Soft Contact Lenses.
The Star Ledger, Newark, New Jersey (Jun. 22, 1982).
Wesley-Jessen advertisement re Durasoft Bifocal Lenses, circa Nov., 1981.
"The Tricon Bifocal" (Mar., 1961).
Advanced Contact Lens Fitting, vol. 1(6), p. 15, (Oct., 1959).
"The Ulticon Prism Bifocal", The Optician, vol. 140(3636), pp. 549-551 (Dec. 19, 1960).
The Optometric Weekly, vol. 51(8), p. 374 (Feb. 25, 1960).

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