Descriptive statistics of the variables assessed (n=50)
| Demographic variables | |||
| Gender (n) | 29 Males, 21 Females | ||
| Age (years) | |||
| Median (25% IQ–75% IQ) | 64 (55–71) | ||
| Minimum–maximum | 24–84 | ||
| Ocular diagnosis (n) | |||
| RP | 14 | ||
| Glaucoma | 23 | ||
| Retinal detachments/tears | 4 | ||
| Other | 9 | ||
| Registration status (n) | |||
| Registered severely sight impaired | 18 | ||
| Registered sight impaired | 8 | ||
| Not registered | 24 | ||
| Use of mobility aids (n) | |||
| White cane or guide dog | 23 | ||
| No mobility aids used | 27 | ||
| Have you been shown your visual field results before? (n) | |||
| Yes | 36 | ||
| No | 14 | ||
| Have you fallen in the previous 12 months? | |||
| Yes | 28 | ||
| No | 22 | ||
| Clinical function variables | Mean (±SD) | Median (25% IQ–75% IQ)) | Range |
| Binocular distance visual acuity (logMAR) | 0.28 (±0.08) | 0.09 (−0.06 to 0.50) | −0.28 to 3.00 |
| Binocular contrast sensitivity (logCS units) | 1.51 (±0.07) | 1.65 (1.30 to 1.95) | 0.00 to 1.95 |
| Binocular visual field variables | |||
| Binocular threshold (dB) | 10.87 (±1.19) | 10.14 (2.13 to 19.40) | 0.27 to 25.60 |
| Binocular suprathreshold (%) | 54.48 (±5.09) | 58.53 (18.8 to 93.18) | 2.27 to 98.86 |
| Binocular kinetic solid angle (deg2) | 5966.77 (±541.19) | 7355.7 (1783.80 to 9566.70) | 64.20 to 10 320.50 |
| Esterman (%) | 59.43 (±4.81) | 67.08 (33.33 to 90.83) | 0.00 to 100.00 |
| Integrated monocular threshold (dB) | 15.69 (±1.52) | 15.17 (4.88 to 26.48) | 0.90 to 31.96 |
| Independent Mobility Questionnaire Person Measures (logits) | −1.23 (±0.23) | −1.26 (−2.29 to −0.09) | −5.92 to 1.84 |
The mean±SD, and the median (IQR) are given for the clinical visual function variables. *Number of comorbid conditions from a list of 12 common medical conditions representing general health status82
logCS, logarithm of the contrast sensitivity; logMAR, logarithm of the minimum angle of resolution; RP, retinitis pigmentosa.