Table 1.
Baseline characteristics of the Study Cohort.
| Basic characteristics | Study Cohort |
|---|---|
| Mean age, in years (SD) | 52.3(9.2) |
| Age < 40 years | 45/519 (8.7%) |
| Age 40–59 years | 361/519 (69.5%) |
| Age ≥ 60 years | 113/519 (21.8%) |
| Sex M:F | 2.3:1 (362:157) |
| Mean duration of diabetes in years (SD) | 15.9 (9.0) |
| Median (IQR) | 15 (10) |
| Proportion of eyes with DME | 426/1,032 (41.2%) |
| Referral source | |
| Self referral | 198 (31.8%) |
| Referred by another doctor or hospital | 154 (29.7%) |
| Screening referral | 167 (32.2%) |
| BCVA 6/12 or better both eyes | 245/516 (47.5%) |
| BCVA worse than 6/12 to better than 6/60 (visual impairment in both eyes) | 69/516 (13.4%) |
| BCVA 6/60 or worse in both eyes (blindness) | 39/516 (7.6%) |
| BCVA in better seeing eye | |
| BCVA 6/12 or better | 408/516 (79.1%) |
| BCVA worse than 6/12 to better than 6/60 (visual impairment) | 70/516 (13.5%) |
| BCVA 6/60 or worse (blindness) | 38/516 (7.4%) |
| BCVA in worse seeing eye | |
| BCVA 6/12 or better | 245/516 (47.5%) |
| BCVA worse than 6/12 to better than 6/60 (visual impairment) | 111/516 (21.5%) |
| BCVA 6/60 or worse (blindness) | 160/516 (31.0%) |
| Fundus picture in both eyes | |
| Low Risk PDR (ETDRS 61, 65) | 193/516 (37.4%) |
| High risk PDR | |
| (ETDRS 71, 75) | 82/516 (15.9%) |
| Advanced PDR | |
| (ETDRS 81–85) | 41/516 (7.9%) |
| Fundus picture in better eye | |
| NPDR | 40/516 (7.6%) |
| Low Risk PDR (ETDRS 61, 65) | 295/516 (57.1%) |
| High Risk PDR (ETDRS 71, 75) | 140/516 (27.1%) |
| Advanced PDR (ETDRS 81–85) | 41/516 (7.9%) |
| Fundus picture in worse eye | |
| Low Risk PDR (ETDRS 61, 65) | 216/516 (41.8%) |
| High risk PDR (ETDRS 71, 75) | 159/516 (30.8%) |
| Advanced PDR (ETDRS 81–85) | 141/516 (27.3%) |
| Treatment Naïve eyes at baseline | 573/1,032 (55.5%) |
| Treatment naïve eyes | |
| BCVA 6/12 or better | 406/573 (70.8%) |
| BCVA worse than 6/12 to better than 6/60 (visual impairment) | 97/573 (16.9%) |
| BCVA 6/60 or worse | 70/573 (12.2%) |
| Persistent PDR post initial PRP | 390/1,032 eyes (37.8%) |
| Stable PDR post initial PRP | 69/1,032 (6.6%) |
| Treatment required in both eyes at presentation | 439/516 (85.0%) |
SD standard deviation, IQR inter quartile range, BCVA best corrected visual acuity, DME diabetic macular edema, PDR proliferative diabetic retinopathy, ETDRS early treatment diabetic retinopathy study.