Determining and marking apparatus and method for use in optometr

Geometrical instruments – Scriber – Curved line

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33200, B43L 1300

Patent

active

056407750

ABSTRACT:
An apparatus and method for subjectively (and in some cases at least partially objectively) determining the proper positioning of progressive power or other corrective lenses are disclosed. The apparatus includes a target such as a small fiber optic or other light source and one or more marking rods which may be activated by the patient (or, in some cases, by the practitioner). While wearing pre-fitted frames and fixating on a remote target, the patient (or practitioner) places the light source against or immediately adjacent the exterior surface of the simulated or other lens within either of the frames and positions the light so that it is centered in the patient's line of sight. Once the light is centered the marking rod is activated which contacts, and marks, the exterior surface of the lens. Because in some embodiments of the apparatus the light source and marking rod or rods are designed to obstruct very little of the patient's vision, his or her peripheral vision remains intact during the process, thereby allowing binocular fusion to occur and avoiding introduction of phoria errors into the positioning process. Other embodiments omit the marking rods but can be attached (temporarily) to the pre-fitted frames for later marking using conventional markers.

REFERENCES:
patent: 1750731 (1930-03-01), Smith
patent: 1751425 (1930-03-01), Smith
patent: 2491312 (1949-12-01), Henry et al.
patent: 2536367 (1951-01-01), Holmes
patent: 2884702 (1959-05-01), Engelmann
patent: 2884832 (1959-05-01), Engelmann
patent: 3987554 (1976-10-01), Pastore
patent: 4115924 (1978-09-01), Kleinkopf
patent: 4121346 (1978-10-01), Grolman et al.
patent: 4160330 (1979-07-01), Grolman
patent: 4206549 (1980-06-01), Gould
patent: 4216588 (1980-08-01), Richards
patent: 4252419 (1981-02-01), Padula II et al.
patent: 4575946 (1986-03-01), Bommarito
patent: 4653192 (1987-03-01), Conrad et al.
patent: 4944585 (1990-07-01), Mizuno
patent: 4977675 (1990-12-01), Jewett, Sr.
patent: 5036592 (1991-08-01), Marshall
patent: 5037193 (1991-08-01), Funk
patent: 5046257 (1991-09-01), Marshall
patent: 5148602 (1992-09-01), Marshall
patent: 5167074 (1992-12-01), Weiss
patent: 5335419 (1994-08-01), Marshall
Rosner, "How to Troubleshoot Progressive Lens Problems," Review of Optometry, 45-46 (Feb. 1990).
An advertisement entitled "Trust Their Promises or Believe Your Own Eyes," for Sola Optical USA, Inc. (Date unknown).
An advertisement entitled "Your Dream. We Deliver.," for American Optical. (Date unknown).
P. 29 of the U.S. optical Spring '90 catalog (1990).
Pp. 79-80 of the Western Optical Ophthalmic Instrument Catalog 1989/1990.
Three photographs of the Grolman Fitting System (Date unknown).
Two photographs of a pupilometer and pupilary distance ruler (Date unknown).
Chapter 28 of Borish, Clinical Refraction (3d ed. 1970), "Bifocals, Multifocals, and Progressive Addition Lenses."
Borish, Hitzeman, and Brookman, "Double Masked Study of Progressive Addition Lenses," Journal of the American Optometric Association 933-43 (vol. 10, No. 51, 1980).
Rosner, "How to Troubleshoot Progressive Lens Problems," Review of Optometry, 45-46 (Feb. 1990).

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