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Hirofumi Kinoshita, Kiyoshi Suzuma, Masafumi Uematsu, Ryotaro Ueki, Takashi Kitaoka; Retinal blood velocity significantly decreased in rhegmatogenous retinal detachment and recovered after surgical treatment in both artery and vein. Invest. Ophthalmol. Vis. Sci. 2013;54(15):4670.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate retinal blood velocity by laser speckle flowgraphy (LSFG) in rhegmatogenous retinal detachment (RRD) patients before and after vitrectomy surgery.
Subjects included 36 patients (36 eyes) who had undergone successful vitrectomy surgery for unilateral RRD from May 2010 to March 2011. Preoperative, and 1- and 3-month postoperative retinal blood velocities were measured. We determined mean retinal blood velocity via LSFG measurements of the mean blur rate (MBR) of the major vessels in the optic disc, retinal artery and retinal vein beside the optic disc corresponds to detachment area. When we investigated correlation between the preoperative MBR and the postoperative MBR in this study, we calculated the values as the percent of the preoperative MBR.
18 males and 18 females patients (mean age 56.3 ± 10.6 years, ranging from 32 to 74) with RRD were included in this study. All of the patients underwent 23-gauge pars plana vitrectomy, which included SF6 gas tamponade. The average preoperative visual acuity, which was expressed as the LogMAR, was 0.62 ± 0.76. Significant improvement of the LogMAR was noted at 3 months after the surgery (0.10 ± 0.28; P < 0.0001). After surgery, average MBR of the major vessels in the optic disc of the affected eyes gradually improved, and the average 3-month postoperative MBR (130.43 ± 36.18%; P < 0.01) significantly increased as compared to the average preoperative MBR. Moreover, 1-month and 3-month postoperative MBR of retinal artery in detachment area were 141.1 ± 32.7% and 144.1 ± 30.2%, respectively as compared to preoperative MBR of retinal artery in detachment area. 1-month and 3-month postoperative MBR of retinal vein in detachment area were also increased to 117.5 ± 18.8% and 125.4 ± 20.4%, respectively as compared to preoperative MBR of retinal vein in detachment area.
LSFG results showed that the mean retinal blood velocity in the optic disc, both retinal artery and vein in detachment area recovered after successful vitrectomy surgery for RRD patients.
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