Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1994-01-19
1996-08-20
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351177, 351219, G02C 704
Patent
active
055483526
ABSTRACT:
A contact lens for viewing the interior of a patient's eye during an argon laser trabeculoplasty (ALT) procedure and for delivering laser energy to desired regions of the trabecular meshwork of the eye. The contact lens is fabricated from a hollow plastic body which is filled with a medium having an index of refraction which is substantially the same as that of the aqueous humor within a patient's eye. Visible and laser light enter the lens by means of a thin window of substantially uniform thickness and exit the lens (thereby entering the eye) at a front face of substantially uniform thickness whose outer curvature is approximately the same as that of the patient's eye. The degree of astigmatic focusing which normally occurs as the visible light and laser beam pass through the contact lens and cornea and into the aqueous humor is substantially reduced. This assists the surgeon performing the procedure to better view the interior of the eye and to place a better defined laser spot on the desired regions of the trabecular meshwork.
REFERENCES:
patent: 4378147 (1983-03-01), Fujita
patent: 4506962 (1985-03-01), Roussel
patent: 4598984 (1986-07-01), Rol
patent: 4664490 (1987-05-01), Rol
patent: 5252998 (1993-10-01), Reis et al.
One-page advertisement, "1 CGA Contact Lens for the Chamber Angle" and 1 CGI Contact Lens for the Iris, LASAG Laser Contact Lenses.
One-page advertisement, "CGA, CGI, CGP, CGV, 1 CGA, 2 CGI, 3 CGP, 4 CGV," by LASAG Laser Contact Lenses.
Ocular Instruments Product Catalog, containing excerpts, "Argon Lenses" and YAG Laser Lenses, 1992, pp. cover, 7-8 & 11.
Two-page advertisement, "Contact Lenses: Optimal for every purpose," by Rodenstock.
Booklet, Contact Glasses, "Acrylic Contact Lenses for Diagnostic Purposes," Haag-Streit AG, pp. 4-7.
Chapter 3.5, "Gonioscopy," Ocular Examination With the Slit Lamp, by Zeiss, pp. cover & 31.
Coherent Inc.
Sugarman Scott J.
LandOfFree
Anti-astigmatic ophthalmic contact lens for use in performing la does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-astigmatic ophthalmic contact lens for use in performing la, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-astigmatic ophthalmic contact lens for use in performing la will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2333559