Portable self-measurement pupillometer with active opto-electron

Details Portable self-measurement pupillometer with active opto-electron Portable self-measurement pupillometer with active opto-electron

1995-11-15

1997-08-26

Dang, Hung X.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

351222, 351246, A61B 302, A61B 300

Patent

active

056615388

ABSTRACT:
Pupillometers with semi-passive targets. The semi-passive targets allow a user of the pupillometer to center the user's pupil on an optically sensitive element in the pupillometer to characterize the pupil. Preferably, a set of centering diodes is disposed on a familiar, easily recognized target which is activated by the optico-electronic means to give the user an indication when the pupil has been centered on the optically sensitive element and that the user has centered the pupil on the defined portion of the passive target.

REFERENCES:
patent: 4800404 (1989-01-01), Ginsburg et al.
patent: 5187506 (1993-02-01), Carter

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