The number of individuals (%) at different levels of percentage difference
| Photopic | Scotopic | ||||
|---|---|---|---|---|---|
| Single flash | 30 Hz flicker | Isolated (blue) | Maximal white | 30 Hz flicker | |
| The interocular percentage difference for the above five stimuli had no statistically significant relation with age (Spearman rank order p values from 0.471 to 0.806), or with the averaged b-wave amplitude for the two eyes (Spearman rank order p values from 0.070 to 0.441). | |||||
| 10% difference or lower | 35 (44) | 40 (51) | 44 (56) | 46 (58) | 41 (52) |
| 20% difference or lower | 67 (85) | 61 (77) | 66 (84) | 66 (84) | 66 (84) |
| 30% difference or lower | 74 (94) | 69 (87) | 76 (96) | 77 (97) | 73 (92) |