Bi-focal corneal contact lens

Details Bi-focal corneal contact lens Bi-focal corneal contact lens

1985-01-17

1989-03-21

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

351177, G02C 704

Patent

active

048137774

ABSTRACT:
A bi-focal corneal lens of uniform index of refraction, which is self-orienting, which is cut on a lathe with a lenticular attachment, so that the various curves can be cut in a minimum of passes. Mathematical equations are furnished to be fed to a computer, which calculates the parameters of the various curves in accordance with the data furnished by the optician so as to provide a lens with a maximal optical zone and a minimal thickness.

REFERENCES:
patent: 3279878 (1966-10-01), Long
patent: 3472581 (1969-10-01), Bronstein
patent: 4302081 (1981-11-01), Tsuetaki
patent: 4324461 (1982-04-01), Salvatori
patent: 4618229 (1986-10-01), Jacobstein et al.
Neefe Optical Lab brochure; "Condensed Fitting Recommendations for Geometric Segment Bifocal Contact Lenses"; Sep. 19, 1969.
Mandell; "A No-Jump Bifocal Contact Lens"; Optometric Weekley; vol. 58, No. 22; Jun. 1, 1967; pp. 19-21.
Ewell; "Bifocal Contact Lenses"; Contacto; vol. 5, No. 4; Apr. 1961; pp. 147, 148, 150, 151, 153.
Kontur Kontact Lens Co. advert.; Contacto; vol. 4, No. 10; Oct. 1960; pp. 472-473.

Affiliated with

Also associated with

Rating

Bi-focal corneal contact lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bi-focal corneal contact lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bi-focal corneal contact lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-473565