Retinal Screening Assistant
Support ophthalmology screening services by detecting referable diabetic retinopathy in colour fundus images and prioritising cases for specialist review.
- Status
- In operation
- State
- Deployed
- Owner
- Cirocco Jones
- Record completeness
- 0
100, less 12 for each open blocker and 4 for each warning. It measures the record, not the performance of the AI System.
The system is in operation while its record stands below the floor of 70. That contradiction is raised as blocker STATE-01.
- Blockers
- 14
Monitoring does not stop when an AI System is approved. A signal opens a finding, and a breach can place the AI System under restriction before anyone opens a form.
Open signals
Most severe first. Nothing closes itself.
| Observed | Type | Signal | Severity | |
|---|---|---|---|---|
| 2026-07-01 | Performance | Sensitivity below threshold, northern sites Sensitivity 0.88 against a floor of 0.92 across four northern sites over the July window. Restriction of the AI System is proposed. | Blocker | |
| 2026-07-01 | Drift | Image statistics drift above tolerance Population drift metric 0.21 against a tolerance of 0.15, coincident with a camera fleet replacement at two sites. | Blocker |
Answered
Kept, because the response is part of the record. An acknowledgement made in error can be reversed here, and the reversal is written to the audit trail.
| Observed | Type | Signal | Severity | |
|---|---|---|---|---|
| 2026-07-18 | Complaint | Clinician reports repeated ungradable classification Site 11 reports the quality gate rejecting images a grader considers gradable. Under triage. | Warning |