Apparatus for the detection of eye sight defects and cassette fo

Details Apparatus for the detection of eye sight defects and cassette fo Apparatus for the detection of eye sight defects and cassette fo

1983-08-11

1986-07-01

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

351239, 351244, A61B 302

Patent

active

045976511

ABSTRACT:
The present invention relates to an apparatus for eye sight examination, allowing to test both of the patient's eyes, especially to detect his common failures and vision defects, for far and close vision, and eventually intermediary distance vision.
The test-image are borne by at least one ribbon or band mounted in a block of two winding spools, housed in a body forming an easily removable tape box of an adequate support of body of the apparatus.
The invention applies to the automatic or semi-automatic detection of visual defects of a patient.

REFERENCES:
patent: 2798408 (1957-07-01), Ellis et al.
patent: 3684355 (1972-08-01), Molner
patent: 3861790 (1975-01-01), Tamura
patent: 3891311 (1975-06-01), Fletcher et al.
patent: 3905688 (1975-09-01), Decker et al.

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