Table 3.
Results of vessel pulsation analysis.
| Baseline | Follow-Up | P | |||
|---|---|---|---|---|---|
| Mean | 95% CI | Mean | 95% CI | ||
| SRAP | |||||
| Controls | 5.00 | 3.67–6.33 | 5.01 | 4.16–5.86 | .970 |
| Mild-moderate | .981 | ||||
| CPAP | 4.08 | 3.30–4.87 | 4.02 | 3.43–4.61 | |
| Non-CPAP | 3.99 | 3.56–4.41 | 3.93 | 3.61–4.25 | |
| Severe | .878 | ||||
| CPAP | 3.52 | 3.09–3.96 | 3.77 | 3.28–4.26 | |
| Non-CPAP | 3.52 | 3.08–3.95 | 3.33 | 2.84–3.81 | |
| SRVP | |||||
| Controls | 5.17 | 3.76–6.58 | 5.22 | 3.89–6.55 | .898 |
| Mild-moderate | .628 | ||||
| CPAP | 5.04 | 3.83–6.24 | 5.10 | 4.36–5.83 | |
| Non-CPAP | 4.42 | 3.77–5.08 | 4.75 | 4.35–5.15 | |
| Severe | .788 | ||||
| CPAP | 4.52 | 3.79–5.25 | 4.62 | 4.04–5.20 | |
| Non-CPAP | 4.41 | 3.68–5.14 | 4.65 | 4.07–5.22 | |
Two-way mixed analysis of variance model comparing the effect of CPAP vs no CPAP on spontaneous retinal arterial and venous pulsation amplitudes. Values not adjusted for confounding factors. All results in micrometers. CI = confidence interval, CPAP = continuous positive airway pressure, SRAP = spontaneous retinal artery pulsation, SRVP = spontaneous retinal venous pulsation.