Abstract

In certain conditions, when the human eye is irradiated by pulsed IR laser light, the observer sees the light as yellow or green. This could be due to second harmonic generation by the cornea, the lens, the retina, or two-photon absorption by the photopigments. It is shown that the most likely cause of this phenomenon is second harmonic generation at the cornea.

© 1988 Optical Society of America

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