Diagnostic ophthalmic lens using extra-low dispersion (ED)...

Details Diagnostic ophthalmic lens using extra-low dispersion (ED)... Diagnostic ophthalmic lens using extra-low dispersion (ED)...

2011-03-22

2011-03-22

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S216000

Reexamination Certificate

active

07909464

ABSTRACT:
An improved diagnostic ophthalmic lens using extra-low dispersion material, defined by having an Abbe Number, Vd>80, is provided. Such a single element diagnostic ophthalmic lens may be used for examination of the eye in conjunction with either an Indirect Opthalmoscope or a Slit Lamp Biomicroscope.

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patent: 5859685 (1999-01-01), Gupta et al.
International Search Report.

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