The effect of exposure to continuous light on the ERG of syrian hamsters

Reduction of ERG wave amplitude was found after exposure to continuous light in albino and pigmented hamsters. The reduction was strongest in albino hamsters. No effect on wave threshold was seen. Changes in time-to-peak were only found for the b-wave in exposed albino hamsters. Comparing these results with those previously found in rats under identical experimental conditions, we noted in hamsters: smaller reduction of amplitude, no increase of threshold and no increase of a-wave time-to-peak.