[PRELIMINARY EXPERIMENT IN OBSERVING OPHTHALMOSCOPICALLY OF EXTERNAL OBJECTS ON THE RETINA AND SOME FINDINGS].
D006801:Humans; D009759:Nystagmus, Pathologic; D009887:Ophthalmoscopy; D010781:Photography; D012160:Retina; D013690:Television
NYSTAGMUS; OPHTHALMOSCOPY; PHOTOGRAPHY; RETINA; TELEVISION