Comparison between internal referrals and external referrals of new patients
| Internal referrals | New patients | |
| Patient data | ||
| Number of patients | 1227 | 168 |
| Average review processing time | 8.34 days | 13.6 days |
| VA of better eye (average) | 64.1 ETDRS letters | 81.5 ETDRS letters |
| Disease and grade | ||
| Diabetic retinopathy (not graded) | 20 (1.6%) | 2 (1.2%) |
| R0M0 | 72 (5.9%) | 2 (1.2%) |
| R0M1A | 1 (0.1%) | |
| R1M0 | 239 (19.5%) | 38 (22.8%) |
| R1M1 | 351 (28.6%) | 34 (20.4%) |
| R1M1A | 2 (0.2%) | |
| R1M1S | 39 (3.2%) | |
| R2M0 | 32 (2.6%) | 2 (1.2%) |
| R2M1 | 76 (6.2%) | |
| R2M1A | 8 (0.7%) | |
| R3M0 | 56 (0.7%) | |
| R3M1 | 64 (5.2%) | |
| R3M1A | 7 (0.6%) | |
| Dry AMD | 74 (6.0%) | 17 (10.2%) |
| Retinal vein occlusion | 56 (4.6%) | 2 (1.2%) |
| Central serous retinopathy | 21 (1.7%) | 2 (1.2%) |
| Other | 101 (8.2%) | 68 (40.7%) |
| Not gradable due to bad image quality | 8 (0.7%) | 1 (0.6%) |
| Outcomes | ||
| Percentage of patients discharged | 179 (14.6%) | 76 (45.5%) |
| Percentage of patients continued in virtual clinic | 669 (54.5%) | 62 (37.1%) |
| Time until next follow-up in virtual clinic | 211.6 days (+/–80.3) | 243.8 days (+/–78.8) |
| Patients brought to face-to-face clinic | 379 (30.9%) | 29 (17.4%) |
| Time until next follow-up in face-to-face clinic | 178.2 days (+/–103.9) | 139.3 days (+/–88.6) |
Only those patients are included, who attended their first appointment.
AMD, age-related macular degeneration; ETDRS, early treatment diabetic retinopathy study; VA, visual acuity.