Characteristics of the previously known versus previously undiagnosed primary open angle glaucoma participants
| Characteristics median (IQR) or % | Previously diagnosed | Previously undiagnosed | |
| n | 207 | 107 | |
| Age, years (n=314) | 72.8 (67.0 to 78.4) | 75.4 (70.3 to 81.0) | |
| Sex (n=314) | Male | 52.2% | 61.7% |
| Female | 47.8% | 38.3% | |
| Social class (n=314) | Professional/managerial | 48.3% | 53.3% |
| Skilled (manual/non-manual) | 41.6% | 25.7% | |
| Semi-skilled/unskilled | 10.1% | 21.0% | |
| Education (n=314) | No qualifications | 30.4% | 29.9% |
| O levels | 7.3% | 10.3% | |
| A levels | 48.8% | 48.6% | |
| Degree | 13.5% | 11.2% | |
| Currently employed? (n=310) | No | 89.3% | 79.8% |
| Yes | 10.7% | 20.2% | |
| How often do you not have enough money for basics? (n=293) | Never | 63.9% | 65.7% |
| Seldom/sometimes | 36.1% | 34.3% | |
| POAG type (n=314) | HTG | 69.1% | 15.9% |
| NTG | 30.9% | 84.1% | |
| IOPg (mm Hg) (n=307) | 16.8 (16.7 to 18.2) | 19.0 (17.6 to 19.4) | |
| Pretreatment IOP (mm Hg) (n=212)* | 26.7.0 (25.9 to 27.5) | 18.3 (17.6 to 19.1) | |
| Axial length (mm) (n=286) | 23.9 (23.2 to 25.1) | 23.9 (23.1 to 24.8) | |
| LogMAR visual acuity (n=312) | 0.20 (0.16 to 0.24) | 0.08 (0.0 to 0.26) | |
| Disc photo CDR (n=249) | 0.55 (0.54 to 0.57) | 0.50 (0.48 to 0.53) | |
| CDR asymmetry (n=210) | 0.06 (0.02 to 0.11) | 0.07 (0.04 to 0.11) | |
| Visual field mean deviation | −4.79 (−7.72 to 5.57) | −3.40 (−4.63 to –3.31) | |
| Central corneal thickness (μm) | 535 (532 to 543) | 544 (536 to 551) | |
| Family history of glaucoma (n=269) | No | 64.0% | 77.7% |
| Yes | 36.0% | 22.3% | |
| Wears glasses/contact lenses? (n=308) | No | 2.5% | 0.96% |
| Yes | 97.6% | 99.0% | |
| Do you have any problems with eyesight? (n=298) | No | 11.5% | 75.5% |
| Yes | 88.5% | 24.5% | |
| Pseudophakic in either eye (n=314) | No | 62.3% | 85.1% |
| Yes | 37.7% | 15.0% | |
| Absolute refractive error (Dioptres) (n=309) | 1.81 (0.75 to 2.63) | 1.25 (0.63 to 2.25) | |
| Systolic BP (mm Hg) (n=314) | 137.5 (135.5 to 140.0) | 140 (135.8 to 141.8) | |
| Diastolic BP (mm Hg) (n=314) | 76.5 (76.0 to 79.6) | 79.0 (76.4 to 80.4) | |
| BMI (kg/m2) (n=313) | 26.0 (26.0 to 27.0) | 26.6 (26.1 to 27.6) | |
| Diabetes | No | 97.1% | 98.1% |
| Yes | 2.9% | 1.9% | |
| Self-reported health status (n=312) | Excellent/very good | 37.4% | 33.0% |
| Good | 44.2% | 47.2% | |
| Fair | 16.5% | 15.1% | |
| Poor | 1.9% | 4.7% | |
Median (95% CI) shown for continuous variables.
*Unimputed data for pretreatment IOP.
BMI, body mass index; BP, blood pressure; HTG, high tension glaucoma; IOPg, Goldmann-correlated intraocular pressure; NTG, normal tension glaucoma.