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Class Information
Number: 351/244
Name: Optics: eye examining, vision testing and correcting > Eye examining or testing instrument > Subjective type > Including test chart or target > Having support or cabinet
Description: Subject matter wherein reading charts or test targets are supported by and individually exhibited at a display window of a cabinet or removably secured to a base board or handle.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7467871 |
Ophthalmological instrument stand |
Dec. 23, 2008 |
| 7329003 |
System, apparatus and method for accommodating opthalmic examination assemblies to patients |
Feb. 12, 2008 |
| 6616278 |
Carrying case and eye examination device provided with the carrying case |
Sep. 9, 2003 |
| 6583792 |
System and method for accurately displaying superimposed images |
Jun. 24, 2003 |
| 5617157 |
Computer controlled subjective refractor |
Apr. 1, 1997 |
| 5596379 |
Portable visual acuity testing system and method |
Jan. 21, 1997 |
| 5568209 |
Automated pocket-sized near vision tester |
Oct. 22, 1996 |
| 5557352 |
Method and apparatus for measuring the visual acuity of the human eye during and immediately after ocular surgery |
Sep. 17, 1996 |
| 5519461 |
Optometer having optotype disc which rotates about its axis and another axis |
May. 21, 1996 |
| 5444504 |
Optometric apparatus |
Aug. 22, 1995 |
| 5398085 |
Device for testing vision potential |
Mar. 14, 1995 |
| 5349397 |
Apparatus and method for determining a patient's dominant eye |
Sep. 20, 1994 |
| 5000563 |
Apparatus for observation and/or treatment of a seated or recumbent patient |
Mar. 19, 1991 |
| 4869589 |
Automated visual screening system |
Sep. 26, 1989 |
| 4859052 |
Portable screen assembly for visual acuity testing |
Aug. 22, 1989 |
| 4778267 |
Amblyopia screening |
Oct. 18, 1988 |
| 4753527 |
Visual acuity testing apparatus |
Jun. 28, 1988 |
| 4740072 |
Vision testing apparatus |
Apr. 26, 1988 |
| 4597651 |
Apparatus for the detection of eye sight defects and cassette for the operation of such an apparatus |
Jul. 1, 1986 |
| 4550990 |
Arrangement for the carrying out of eye examination |
Nov. 5, 1985 |
| 4536065 |
Fixation device for eye testing |
Aug. 20, 1985 |
| 4421394 |
Displacement system for an opthalmologic examination unit |
Dec. 20, 1983 |
| 4407571 |
Compact refraction instrument |
Oct. 4, 1983 |
| 4402580 |
Optical exercising device |
Sep. 6, 1983 |
| 4396258 |
Concentric drums target support system for ophthalmic instrument |
Aug. 2, 1983 |
| 4279479 |
Vision screening kit |
Jul. 21, 1981 |
| 4260226 |
Eye depth perception testing apparatus |
Apr. 7, 1981 |
| 4212520 |
Eye testing device |
Jul. 15, 1980 |
| 4093359 |
Ocular fixation aid |
Jun. 6, 1978 |
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