ABSTRACTElectroretinograms (ERG's) and visual evoked potentials (VEP's) were recorded from four cynomolgus monkeys in response to a sinusoidally flickering argon laser beam (514 nm) producing a 50-μm spot on the fovea. Superposition of a 20-Hz train of six pulses of Qswitched (120 ns) frequency-doubled neodymium laser light (532 nm) at “safe” exposure energies in 250 ms had no significant effects on the ERG (p > 0.05). The VEP was disrupted significantly (p < 0.001) but demonstrated recovery within 500 ms of the initial pulse. There-fore, flash effects of pulsed visible lasers at these doses on suprathreshold luminance processing are probably limited only to the exposure period.