Table 4.
Preoperative and 12 months postoperative questionnaire resultsa after WF-optimized and WF-guided hyperopic laser in situ keratomileusis
| Parameter | Mean ± standard deviation, range
|
Pb | |
|---|---|---|---|
| WF-guided (n=11) | WF-optimized (n=11) | ||
| Preoperative | |||
| Glare, night | 1.64±2.29, 0–6 | 1.64±2.29, 0–6 | 1.00 |
| Glare, day | 2.00±2.53, 0–7 | 2.00±2.53, 0–7 | 1.00 |
| Haze | 1.82±2.71, 0–7 | 1.91±2.77, 0–7 | 1.00 |
| Halos | 0.55±1.51, 0–5 | 0.55±1.51, 0–5 | 1.00 |
| Clarity, night | 3.45±2.94, 0–8 | 3.45±2.94, 0–8 | 1.00 |
| Clarity, day | 2.36±2.66, 0–8 | 2.45±2.70, 0–8 | 1.00 |
| Vision is excellent | 3.82±1.94, 1–8 | 4.36±2.34, 1–8 | 0.35 |
| Dry eye | 2.27±2.10, 0–5 | 2.27±1.90, 0–5 | 1.00 |
| Dry eye severity | 1.55±1.37, 0–3 | 1.73±1.27, 0–3 | 1.00 |
| Foreign body sensation | 1.00±1.79, 0–6 | 1.00±1.79, 0–6 | 1.00 |
| Vision fluctuates diurnally | 1.27±1.74, 0–5 | 1.36±1.86, 0–5 | 1.00 |
| Difficulty due to ghosting | 0.64±1.80, 0–6 | 0.64±1.80, 0–6 | 1.00 |
| 12 months postoperative | |||
| Glare, night | 1.45±1.86, 0–6 | 1.45±1.86, 0–6 | 1.00 |
| Glare, day | 0.91±1.38, 0–4 | 0.91±1.38, 0–4 | 1.00 |
| Haze | 0.91±1.14, 0–3 | 0.91±1.04, 0–3 | 1.00 |
| Halos | 0.36±0.67, 0–2 | 0.55±0.82, 0–2 | 1.00 |
| Clarity, night | 0.82±0.98, 0–3 | 1.27±1.10, 0–3 | 0.17 |
| Clarity, day | 0.82±0.87, 0–2 | 1.36±1.21, 0–4 | 0.18 |
| Vision is excellent | 2.64±3.35, 0–8 | 3.00±2.65, 0–8 | 0.57 |
| Dry eye | 1.91±1.97, 0–7 | 1.91±1.97, 0–7 | 1.00 |
| Dry eye severity | 1.73±1.56, 0–5 | 1.73±1.56, 0–5 | 1.00 |
| Foreign body sensation | 0.73±1.27, 0–4 | 0.64±0.81, 0–2 | 1.00 |
| Vision fluctuates diurnally | 1.00±1.26, 0–3 | 1.18±1.54, 0–4 | 1.00 |
| Difficulty due to ghosting | 0.09±0.30, 0–1 | 0.36±1.21, 0–4 | 1.00 |
| Percent, 95% confidence interval | |||
| Preferred eye | 45.5c, 16.7–76.6 | 9.1c, 0.01–41.3 | 0.20d |
Notes:
a
The means presented are from participants’ responses to a validated questionnaire. The questionnaire was completed preoperatively and postoperatively at months 1, 6, and 12. Participants completed the questionnaire for each eye.
b
P values for means are by paired Wilcoxon signed-rank test for nonparametrically distributed data from a small sample.
c
45.5% of subjects (10 eyes) responded “Same”.
d
P values for proportions are by Monte Carlo chi-squared statistic for data from a small sample.
Abbreviation: WF, wavefront.