Ocular optical system simulation apparatus

Details Ocular optical system simulation apparatus Ocular optical system simulation apparatus

1997-05-30

1999-02-23

Manuel, George

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

A61B 300

Patent

active

058750177

ABSTRACT:
An apparatus for simulating a retinal image obtained when a lens is used with a human eye. The apparatus can simulate intraocular lenses, contact lenses or eyeglass lenses. When intraocular lenses are simulated, a lens system 31 comprises photographic lenses and an intraocular lens mounting section. The intraocular lens is held within one or more liquid containing sections provided in the intraocular lens mounting section. The relative position of the photographic lenses and the intraocular lens is set by making the paraxial object point distance of a front refracting face of the intraocular lens substantially equal that calculated when the intraocular lens replaces a crystalline lens of Glustrand's ocular model. When simulating contact or eyeglass lenses, a front face of a lens disposed nearest the object in lens system 31 has substantially the same radius of curvature as that of a human cornea, and a contact lens supporting base has a shape corresponding to the conjunctiva of the eye. An image of the object 30 formed by the lens system 31 thus designed is captured by a CCD camera 32 and the image is then displayed on a display unit 33.

REFERENCES:
patent: 5293533 (1994-03-01), Klyce
patent: 5532770 (1996-07-01), Schneider et al.
patent: 5652640 (1997-07-01), Schneider

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