Demographic variable | Placebo | 1.0% Phentolamine | P-valuea |
---|---|---|---|
 Sample Size | 8 (100%) | 16 (100%) | – |
 Female (%) | 5 (63%) | 12 (75%) | .68 |
 Mean age (yrs ± STDEV) | 47.4 ± 13.5 | 42.1 ± 14.6 | .40 |
Night vision complaints | |||
 Halos | 7 (87.5%) | 9 (56.3%) | .35 |
 Glare Sensitivity | 7 (87.5%) | 15 (93.8%) | 1.0 |
 Starbursts | 5 (62.5%) | 11 (68.8%) | 1.0 |
 Depth Perception | 5 (62.5%) | 11 (68.8%) | 1.0 |
 Other Concerns | 0 (0%) | 0 (0%) | NA |
Intraocular pressure | |||
 Right Eye (mm Hg ± STDEV) | 13.8 ± 1.5 | 13.8 ± 2.7 | NA |
 Left Eye (mm Hg ± STDEV) | 13.4 ± 1.3 | 13.9 ± 1.4 | .41 |
Blood pressure | |||
 Systolic (mm Hg ± STDEV) | 124.8 ± 13.2 | 122.8 ± 11.2 | .70 |
 Diastolic (mm Hg ± STDEV) | 79.8 ± 8.0 | 81.1 ± 8.7 | .73 |
Prior vision surgery | |||
 LASIK, n (%) | 2 (25.0%) | 1 (6.3%) | .25 |
 PRK, n (%) | 0 (0%) | 0 (0%) | NA |
 RK, n (%) | 1 (12.5%) | 0 (0%) | .33 |
Pupil diameter | |||
 Pre-illumination (mm ± STDEV) | 6.6 ± 1.0 | 6.1 ± 1.7 | .52 |
 Illuminated (mm ± STDEV) | 4.9 ± 0.8 | 4.4 ± 0.6 | .10 |
Low contrast visual acuityb | |||
 Pre-illumination (letters ± STDEV) | 18 ± 9.4 | 21 ± 6.7 | .46 |
 Contralateral- illuminated (letters ± STDEV) | 30 ± 8.4 | 33 ± 5.4 | .30 |