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Class Information
Number: 351/232
Name: Optics: eye examining, vision testing and correcting > Eye examining or testing instrument > Subjective type > With light polarzing lens
Description: Subject matter wherein adjustable light polarizing means are positioned in the light beam of a projected test-image and/or before each eye of a patient viewing a test target.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621750 |
Anti-glare properties of polarized lens demonstration device and associated methods |
Nov. 24, 2009 |
| 7568801 |
Optotype presenting apparatus |
Aug. 4, 2009 |
| 7470024 |
System for obtaining a fundus image |
Dec. 30, 2008 |
| 7306335 |
Visual training method and visual training device |
Dec. 11, 2007 |
| 6664364 |
Selenium-containing transparent optical material |
Dec. 16, 2003 |
| 6482918 |
Selenium-containing transparent optical material |
Nov. 19, 2002 |
| 6303747 |
Selenium-containing transparent optical material |
Oct. 16, 2001 |
| 6124424 |
Selenized transparent optical material |
Sep. 26, 2000 |
| 6113238 |
Glare demonstrator |
Sep. 5, 2000 |
| 5975702 |
Method of using polarization differencing to improve vision |
Nov. 2, 1999 |
| 5638082 |
Vision testing system for stereoscopic viewing by a test person |
Jun. 10, 1997 |
| 5629748 |
Visual function examination apparatus including binocular fixation target |
May. 13, 1997 |
| 5604280 |
Ring spiro [fluorene-[2H]-benzopyranes] and their use in ophthalmic optics |
Feb. 18, 1997 |
| 5530492 |
Ophthalmological instrument for producing dichoptic stimuli on a visual display terminal |
Jun. 25, 1996 |
| 5381196 |
Contrast sensitivity tester |
Jan. 10, 1995 |
| 5331358 |
Vision testing system for testing the sight function of a patient |
Jul. 19, 1994 |
| 4943151 |
Scheiner-principle vernier optometer |
Jul. 24, 1990 |
| 4826308 |
Method and system for detecting, characterizing and monitoring optic nerve diseases |
May. 2, 1989 |
| 4818091 |
System and method of detecting visual field defects |
Apr. 4, 1989 |
| 4415243 |
Optical test chart for testing binocular reading ability |
Nov. 15, 1983 |
| 4188097 |
Method of and apparatus for testing visual integrity |
Feb. 12, 1980 |
| 4155632 |
Method and apparatus for testing vision |
May. 22, 1979 |
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