Table 2.
Comparison of the history of laser photocoagulation and the presence of retinal degeneration in eyes with and without ERM.
| Eyes with ERM | Eyes without ERM | |
|---|---|---|
| Number of eyes | 871 | 1091 |
| Previous laser treatment for retinal degeneration | 114 (13.1%) | 53 (4.9%) |
| No history of laser treatment | 757 (86.9%) | 1038 (95.1) |
| χ2 | 42.132 | |
| P value | <0.001 | |
| Untreated retinal degeneration was found at presentation | 116 (15.3%) | 6 (0.6%) |
| No retinal degeneration was found at presentation | 641 (84.7%) | 1032 (99.4%) |
| χ2 | 100.188 | |
| P value | <0.001 | |
Data were analysed using chi-square tests, and a P-value < 0.05 was considered statistically significant. “Eyes without ERM” were randomly selected from patients who visited during the same period as those with ERM and were scheduled for cataract surgery, all of whom underwent OCT examination to confirm the absence of ERM.
ERM epiretinal membranes.