Images of retinas examined for characteristic patterns. Color photographs of retinas taken. Proper alinement of eye obtained by asking subject to gaze at light-emitting diode. "Red-eye" patterns in resulting color photographs examined by trained observers for signs of ocular defects. System used to check power of contact lenses and eyeglasses by taking photographs with these items in place.
Photographic Screening for Eye Defects
NASA Tech Briefs ; 8 , 4
1985-04-01
Sonstige
Keine Angabe
Englisch
NTRS | 1972
|NTRS | 1971
|NTIS | 1971
NTRS | 1972
|NTRS | 1973
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