Apparatus for presenting a test chart

Details Apparatus for presenting a test chart Apparatus for presenting a test chart

1998-03-27

1999-04-13

Manuel, George

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

A61B 302

Patent

active

058943390

ABSTRACT:
An apparatus for presenting a test chart for testing a visual performance of an eye to be examined, the apparatus comprising a test chart plate including a plurality of test chart pictures provided with a plurality of test charts, and with information about the test charts provided between each test chart picture and the next test chart picture, a case having an opening which is approximately the same size as the test chart picture, and a change-over device for moving the desired test chart picture to the opening of the case.

REFERENCES:
patent: 5416540 (1995-05-01), Hayashi
patent: 5444504 (1995-08-01), Kobayashi et al.
patent: 5589897 (1996-12-01), Sinclair et al.

Affiliated with

Also associated with

Rating

Apparatus for presenting a test chart does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for presenting a test chart, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for presenting a test chart will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-225467