Classification of glaucoma7
| Category | CDR | CDR asymmetry | Visual field | Visual acuity | Other | |
|---|---|---|---|---|---|---|
| Percentiles refer to those subjects with normal suprathreshold visual fields in both eyes. | ||||||
| *Between 11 to 1 o’clock or 5 to 7 o’clock. | ||||||
| †No alternative explanation for CDR findings (dysplastic disc or marked anisometropia) or the VF defect (retinal vascular disease, macular degeneration or cerebrovascular disease. | ||||||
| FP= false positives. | ||||||
| 1† | ⩾ 97.5th percentile; NRR width = 0.1 CDR* | ⩾ 97.5th percentile | ⩾18° × 12° and = 10 dB below age specific normal | — | — | |
| ⩽50% FP | ||||||
| 2† | ⩾ 99.5th percentile | ⩾ 99.5th percentile | Cannot complete satisfactorily | — | — | |
| 3 | I | Disc not seen | Impossible | <3/60 | IOP >99.5th percentile | |
| Ii | Disc not seen | Impossible | <3/60 | Evidence of glaucoma filtering surgery | ||