Table 2. Comparison of visual impairment and interventions during the pre-COVID period, lockdown (phase 1-4), and unlocking (phase 1-10) for diabetic retinopathy patients.
*As compared to pre-COVID-19
COVID 19: coronavirus disease 2019
| Variable | n | % | Pre-COVID-19 | % | Lockdown (phase 1-4) | % | Unlock (phase 1-10) | % | p-Value* | |
| Visual impairment | Mild/No | 9083 | 42 | 5618 | 46 | 177 | 39 | 3288 | 39 | <0.00001 |
| Moderate | 4335 | 20 | 2487 | 20 | 75 | 16 | 1763 | 21 | 0.85 | |
| Severe | 1905 | 9 | 1063 | 9 | 35 | 8 | 807 | 9 | 0.09 | |
| Blind | 4907 | 23 | 2547 | 21 | 144 | 32 | 2216 | 26 | <0.00001 | |
| Unspecified | 1041 | 5 | 560 | 5 | 25 | 5 | 456 | 5 | 0.01 | |
| Interventions | Vitreoretinal surgery | 5091 | 24 | 2701 | 22 | 167 | 37 | 2223 | 26 | <0.00001 |
| Intravitreal injections | 3016 | 14 | 1595 | 13 | 86 | 19 | 1335 | 16 | 0.001 | |