Patient characteristics of eyes triggering ‘threshold alarms’ (n=98)
| Characteristics | Mean | SD |
| Patients’ age | 65.1 | 11.1 |
| Female gender (%) | 56.2 | |
| VA (ETDRS letters) baseline | 75.8 | 9.7 |
| Central macular thickness (CMT) (µm) baseline | 264.9 | 85.3 |
| Mean changes in VA (ETDRS letters) from baseline | −4.2 | 9.3 |
| Mean changes in CMT (µm) from baseline | 29.5 | 134.7 |
| Ethnicity | n (eyes) | |
| English/Welsh/Scottish/Northern Irish/British | 27 | |
| Mixed/multiple ethnic groups | 2 | |
| Any other white background | 6 | |
| Indian | 15 | |
| Pakistani | 12 | |
| Any other Asian background | 1 | |
| African | 4 | |
| Caribbean | 9 | |
| Any other Black/African/Caribbean background | 2 | |
| Not stated | 20 | |
| Diagnoses | n (eyes) | |
| DMO | 57 | |
| RVO | 14 | |
| 3-AMD | 9 | |
| Diabetic maculopathy | 5 | |
| Diabetic retinopathy no maculopathy | 7 | |
| Sickle cell retinopathy | 1 | |
| Atherosclerosis | 2 | |
| Myopic CNV | 3 | |
| Frequency of alarms | n (eyes) | |
| 1 | 70 | |
| 2 | 14 | |
| 3 | 5 | |
| 4 | 3 | |
| 5 | 3 | |
| 7 | 1 | |
| 8 | 1 | |
| 9 | 1 |
AMD, age-related macular degeneration; CMT, central macular thickness; CNV, choroidal neovascularisation; DMO, diabetic macular oedema; ETDRS, Early Treatment of Diabetic Retinopathy Study; RVO, retinal vein occlusion; VA, visual acuity.