Table 1.
Patient and parapapillary atrophy characteristics
| Glaucoma suspects | OAG | P-value | |
|---|---|---|---|
| Number eyes (patients) | 229 (157) | 311 (209) | – |
| Age (years) | 55.3 (±5.2) | 61.9 (±14.2) | <0.001 |
| Female (%) | 64.1 | 66.0 | 0.76 |
| Race/ethnicity (%) | |||
| Caucasian | 34.6 | 26.3 | 0.22 |
| African-American | 20.5 | 30.6 | |
| Hispanic | 29.5 | 32.1 | |
| Other race/ethnicity | 15.4 | 11.0 | |
| Clock hours total PPA | 5.1 (±3.5) | 6.7 (±3.7) | <0.001 |
| Clock hours βPPA | 3.7 (±3.5) | 5.2 (±4.3) | <0.001 |
| Percent width βPPA | 15.1 (±22.0) | 21.0 (±28.2) | 0.02 |
| Percent eyes with βPPA at disc quadrant: | |||
| Temporal (%) | 44.5 | 49.5 | 0.25 |
| Inferior (%) | 24.9 | 34.4 | 0.02 |
| Nasal (%) | 18.3 | 34.7 | <0.001 |
| Superior (%) | 13.5 | 24.1 | 0.002 |
| Percent eyes with PPA ordinal rating: | |||
| 0 (%) | 7.4 | 5.5 | <0.001 |
| 1 (%) | 54.2 | 38.1 | |
| 2 (%) | 31.9 | 39.4 | |
| 3 (%) | 6.6 | 17.1 |
Abbreviations: OAG, open-angle glaucoma; PPA, parapapillary atrophy.