Profile of spectacle wear in Ireland Eye Study participants aged 6–7 years old and 12–13 years old
| Wearing/not wearing spectacles, n (%) | No PVI, n (%) | PVI ‘either eye’, n (%) | PVI ‘better eye’, n (%) |
| 6–7 years | |||
| No spectacles: 628 (86.3) | 583 (92.8) | 45 (7.2) | 20 (3.2) |
| Wearing spectacles: 63 (8.8) | 50 (79.4%) | 13 (20.6) | 4 (6.3) |
| At school without spectacles: 28 (3.9) | 22 (78.6%) | 6 (21.4) | 1 (3.6) |
| 12–13 years | |||
| No spectacles: 675 (69.6) | 645 (95.6) | 30 (4.4) | 14 (2.1) |
| Wearing spectacles: 124 (13.8) | 114 (91.9) | 10 (8.1) | 1 (0.8) |
| At school without spectacles: 96 (10.7) | 61 (63.5) | 35 (36.5) | 15 (15.6) |
PVI, presenting visual impairment.