Figure 2. Examples of ERG traces recorded before and four weeks after laser photocoagulation in one representative animal. Electroretinogram recordings in response to flash stimuli of increasing intensity for the untreated right eye (blue traces) and for the lasered left eye (red traces) from one animal in group III. The intensity of the flash stimulus is indicated to the left of each of the recording traces. No difference was observed between the electroretinogram amplitudes of the left and right eyes before laser treatment (0 days), while a significant reduction in all components is clearly visible in the treated eye at four weeks post-treatment (4 weeks), both in scotopic and photopic light conditions.