Table 3.
Changes in peripapillary RNFL thickness and macular GCIPL thickness after glaucoma surgery (means ± SD, µm).
| Preoperative value | Postoperative value | Changes | p-value | |
|---|---|---|---|---|
| Average RNFL thickness | 75.6 ± 17.7 | 70.2 ± 15.8 | −5.4 ± 6.9 | <0.001 |
| Quadrant RNFL thickness | ||||
| Superior | 87.1 ± 25.1 | 79.1 ± 25.5 | −8.0 ± 13.5 | <0.001 |
| Nasal | 66.3 ± 10.6 | 64.3 ± 13.3 | −2.0 ± 12.3 | 0.215 |
| Inferior | 84.9 ± 28.7 | 76.8 ± 24.1 | −8.0 ± 11.1 | <0.001 |
| Temporal | 63.9 ± 15.6 | 58.5 ± 14.4 | −5.4 ± 9.6 | <0.001 |
| Average GCIPL thickness | 68.0 ± 13.7 | 66.9 ± 12.7 | −1.1 ± 5.8 | 0.145 |
| Sectoral GCIPL thickness | ||||
| Superior | 68.2 ± 17.2 | 67.8 ± 15.3 | −0.4 ± 12.1 | 0.813 |
| Superonasal | 69.3 ± 17.7 | 68.2 ± 15.4 | −1.1 ± 12.9 | 0.501 |
| Inferonasal | 68.0 ± 15.7 | 66.5 ± 13.8 | −1.5 ± 8.6 | 0.199 |
| Inferior | 64.7 ± 14.1 | 64.4 ± 13.0 | −0.3 ± 6.1 | 0.716 |
| Inferotemporal | 67.2 ± 17.8 | 66.3 ± 15.5 | −0.9 ± 8.8 | 0.448 |
| Superotemporal | 68.4 ± 15.2 | 67.2 ± 14.8 | −1.2 ± 9.1 | 0.332 |
SD = standard deviation, RNFL = retinal nerve fibre layer, GCIPL = ganglion cell layer plus inner plexiform layer.