Abstract
Purpose :
This retrospective study was to identify the effect of the failure to dip during night blood pressure (BP) on visual outcomes for branch retinal vein occlusion (BRVO) patients.
Methods :
Thirty-five patients with BRVO during 2015 to 2018 were retrospectively analyzed. It was diagnosed through complete ophthalmic examination which was including color fundus photography, optical coherence tomography (OCT) and fundus fluorescein angiography (FFA). All patients who diagnosed as BRVO had involved the macular within 6mm diameters circle of Early Treatment Diabetic Retinopathy Study (ETDRS). We measured 24-hour ambulatory BPs in all patients with BRVO. We evaluated the mean BP dipping pattern which defined as the ratio of difference in mean day and night systolic BP. And we compared between dipper group and non-dipper group within BRVO patients to analyses the visual acuity, macular condition and choroid state in the both eyes.
Results :
In 35 eyes identified with BRVO, 22(62.86%) eyes exhibited non-dippers. There were no significant differences in other clinical characteristics between dipper group and non-dipper group. Mean 24-hour ambulatory BP was 141/90mmHg in non-dippers and 136/86mmHg in dippers. Mean systolic and diastolic BPs at sleep state was 135/86mmHg in non-dippers and 122/76mmHg in dippers (p=0.003). The mean logarithm of the minimum angle of resolution (logMAR) visual acuity at first visit (baseline) was 0.60±0.47 vs. 0.30±0.36 in non-dipper group and dipper group, respectively (95% CI, p=0.041). The mean logMAR visual acuity at final visit was 0.35±0.28 vs. 0.02±0.12 in non-dipper group and dipper group, respectively (95% CI, p=0.001). The changes logMAR visual acuity was 0.30±0.21 vs. 0.15±0.28 in dipper and non-dipper group, respectively (95% CI, p=0.139). Average systolic BP dipping ratio(%) was significantly associated with the final visual acuity(r= -0.148; p=0.022).
Conclusions: Visual acuity in eyes with BRVO was significantly poor in non-dipper groups. Visual outcome was correlated with the systolic BP dipping ratio. Controlling nocturnal systolic BP has an important meaning in the management of BRVO disease.
Conclusions :
Visual acuity in eyes with BRVO was significantly poor in non-dipper groups. Visual outcome was correlated with the systolic BP dipping ratio. Controlling nocturnal systolic BP has an important meaning in the management of BRVO disease
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.