Table 2.
Frequency and demographic features for the top 20 most common reasons for blindness certification
| Diagnosis | Number of cases (% of totalb) | Female (% of total) | Age at certification Mean±SD (years) | Childhooda (%) | Working–agea (%) | Older adultsa (%) |
|---|---|---|---|---|---|---|
| AMD | 2684 (54.6%) | 64.7% | 84 ± 7 | 0.0% | 1.3% | 98.7% |
| IRD | 406 (8.3%) | 50.5% | 47 ± 20 | 7.9% | 73.8% | 18.3% |
| Glaucoma | 398 (8.1%) | 49.7% | 79 ± 13 | 0.0% | 13.9% | 86.1% |
| Diabetic Retinopathy | 264 (5.4%) | 53.0% | 65 ± 14 | 0.0% | 41.4% | 58.6% |
| Optic Atrophy | 237 (4.8%) | 47.9% | 55 ± 23 | 8.0% | 54.0% | 38.0% |
| Retina Vascular Disease | 153 (3.1%) | 55.6% | 79 ± 11 | 0.0% | 10.5% | 89.5% |
| Cerebral Defect | 88 (1.8%) | 53.4% | 56 ± 27 | 14.9% | 37.9% | 47.1% |
| Retina Surgical | 85 (1.7%) | 38.8% | 64 ± 22 | 3.6% | 38.1% | 58.3% |
| Retina Congenital | 73 (1.5%) | 49.3% | 17 ± 20 | 63.0% | 31.5% | 5.5% |
| Corneal Scar | 41 (0.8%) | 46.3% | 66 ± 20 | 2.4% | 34.1% | 63.4% |
| Uveitis | 38 (0.8%) | 50.0% | 59 ± 21 | 2.8% | 61.1% | 36.1% |
| Cataract Adult | 35 (0.7%) | 60.0% | 80 ± 9 | 0.0% | 5.7% | 94.3% |
| Myopic Macular Disease | 34 (0.7%) | 52.9% | 67 ± 15 | 0.0% | 41.2% | 58.8% |
| Amblyopia | 27 (0.5%) | 48.1% | 38 ± 30 | 25.9% | 55.6% | 18.5% |
| Corneal Dystrophy | 21 (0.4%) | 76.2% | 61 ± 22 | 4.8% | 42.9% | 52.4% |
| Optic Nerve Tumour | 21 (0.4%) | 61.9% | 39 ± 23 | 23.8% | 57.1% | 19.0% |
| Optic Nerve Congenital | 21 (0.4%) | 57.1% | 19 ± 22 | 61.9% | 33.3% | 4.8% |
| Cataract Congenital | 13 (0.3%) | 30.8% | 26 ± 17 | 30.8% | 69.2% | 0.0% |
| HON | 10 (0.2%) | 30.0% | 36 ± 22 | 0.0% | 80.0% | 20.0% |
| Retinal Trauma | 8 (0.2%) | 37.5% | 56 ± 25 | 0.0% | 75.0% | 25.0% |
aPercentage total for each diagnosis; childhood included those aged between 0–15 years, working age was 16-64 years and older adults were those 65 years and over.
bThe total number of blindness certificates issued were 4919.
AMD; age-related macular degeneration, IRD; inherited retinal disease, HONs; hereditary optic neuropathy.