The “main cause” of visual impairment, classified according to the permanence of visual loss and need for active treatment
| Category | Description | Diagnoses |
|---|---|---|
| I | Permanent and requires no ongoing treatment | ARMD |
| Trauma/retinal detachment | ||
| Congenital/genetic/familial | ||
| Optic nerve pathology | ||
| Non-age related maculopathy | ||
| Retinitis pigmentosa | ||
| Myopia | ||
| II | Permanent but requires ongoing treatment | Glaucoma |
| Diabetic/vascular retinopathies | ||
| Uveitis | ||
| III | Potentially reversible | Cataract |
| Corneal/surface pathologies |