Post-treatment changes in electroretinographic B-wave response amplitudes*
| Type of stimulus evoking electroretinogram | Post-treatment percentage change baseline, mean±SD | p Value |
| Photopic single flash | 18±58 | 0.329 |
| Photopic 30 Hz flicker | −10±30 | 0.075 |
| Isolated rod response 30 min† dark adaptation | None measurable | |
| Maximal response 30 min† dark adaptation | 78±138 | 0.136 |
| Isolated rod response 120 min† dark adaptation | 132±108 | <0.001 |
| Maximal response 120 min† dark adaptation | 58±56 | <0.001 |
↵* Mean changes in electroretinographic b-wave response amplitudes immediately after treatment completion are expressed as percentages (mean±SD) of the baseline response amplitude under photopic and scotopic conditions. The mean changes in scotopic response amplitudes after 120 min of dark adaptation were significant.
↵† Period of prior dark adaptation.