Categories of glaucoma diagnosis according to ISGEO and blindness among patients with glaucoma in aphakia and pseudophakia
| Level 1* | Level 2* | Level 3* | Unilateral blindness | Bilateral blindness | |
|---|---|---|---|---|---|
| *Classified according to the three levels of evidence described by the ISGEO.12 | |||||
| Level 1:Vertical cup-disc ratio (VCDR) or cup-disc asymmetry ⩾97.5th percentile of perimetrically normal population with visual field defect consistent with glaucoma. | |||||
| Level 2: Vertical cup-disc ratio (VCDR) or cup-disc asymmetry ⩾99.5th percentile of perimetrically normal population. | |||||
| Level 3:IOP ⩾99.5th percentile of normal population with visual acuity<2/40. | |||||
| †Includes 1 person who had bilateral glaucoma with aphakia in one eye and pseudophakia in the other. | |||||
| Aphakes | 1 | 35 | 1 | 7 | 2 |
| Pseudophakes | 1 | 13† | 3 | 3 | 0 |
| Total | 2 | 48† | 4 | 10 | 2 |