Ophthalmic artery haemodynamics by colour Doppler imaging
| Bimatoprost | Bimatoprost+dorzolamide | |
| Ophthalmic artery | ||
| Peak systolic velocity (cm/s) | ||
| 18:00 | 39.8±13.4 | 38.2±11.2 |
| 22:00 | 38.2±11.3 | 36.2±9.6 |
| 2:00 | 35.3±11.3 | 36.8±9.3 |
| 4:00 | 36.6±12.0 | 35.4±10.2 |
| 6:00 | 36.5±11.5 | 35.1±10.6 |
| p Value | 0.5739 | |
| End-diastolic velocity (cm/s) | ||
| 18:00 | 12.1±4.5 | 11.3±3.7 |
| 22:00 | 11.0±3.3 | 11.3±4.1 |
| 2:00 | 10.1±4.8 | 11.0±4.6 |
| 4:00 | 11.2±5.5 | 11.5±5.4 |
| 6:00 | 11.4±4.3 | 10.1±4.2 |
| p Value | 0.1616 | |
| Resistance index | ||
| 18:00 | 0.694±0.063 | 0.703±0.064 |
| 22:00 | 0.705±0.065 | 0.686±0.075 |
| 2:00 | 0.714±0.077 | 0.700±0.084 |
| 4:00 | 0.700±0.072 | 0.685±0.081 |
| 6:00 | 0.689±0.060 | 0.716±0.070 |
| p Value | 0.0167* | |
↵* Statistically significant.