Ophthalmic instrument tests and helps develop focusing ability. Movable stage on a fixed base permits adjustment of effective target position as perceived by subject. Various apertures used to perform tests and training procedures. Ophthalmic instrument provides four functions: it measures visual near and far points; provides focus stimulus in vision research; measures visual-accommodation resting position; can be used to train for volitional control of person's focus response.
Visual-Accommodation Trainer/Tester
NASA Tech Briefs ; 10 , 2
1986-06-01
Miscellaneous
No indication
English
Visual accommodation trainer-tester
NTRS | 1983
|The non-visual in visual accommodation
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|Training the visual accommodation system.
NTRS | 1973
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