Abstract

An infrared image converter is proposed for observing eye motion in experiments in which the optokinetic nystagmic reflex motion is used to indicate recovery of vision after flash blinding. Illumination is provided by an incandescent lamp with a filter which transmits only above 0.9 μ. One experiment was performed on a single human subject, using a photoflash lamp for the blinding light and a faint moving light for the test pattern. For exposures up to 0.017 J cm−2 the duration of blindness increased linearly with exposure. The durations determined by the subject and by the observer agreed very well.

© 1965 Optical Society of America

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