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Koichi Nishitsuka, Katsuhiro Nishi, Yutaka Kaneko, Hiroyuki Namba, Hidetoshi Yamashita; Quantification of residual vitreous after vitreous shaving during vitrectomy using intraoperative optical coherence tomography. Invest. Ophthalmol. Vis. Sci. 2016;57(12):4479.
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© ARVO (1962-2015); The Authors (2016-present)
Vitreous shaving is an important procedure for vitrevtomy surgery. But we know very little how much should we performe the vitreous shaving appropriately because there is no way to quantify the residual vitreous. To evaluate the technique of peripheral vitreous shaving during vitrectomy, we measured residual peripheral vitreous using intraoperative optical coherence tomography (iOCT).
The present study was performed according to the recommendation of the Declaration of Helsinki and approved by the ethics committee of the Yamagata University, Faculty of Medicine, Yamagata, Japan. This retrospective study included 24 eyes of 24 patients (rhegmatogenous retinal detachment, 12 eyes; proliferative diabetic retinopathy, 4 eyes; vitreous hemorrhage, 4 eyes; proliferative vitreopathy, 2 eyes; macular hole, 1 eye; and vitreomacular traction syndrome, 1 eye) who underwent vitrectomy with iOCT at Yamagata University Hospital, Japan from May to July 2015. Each patient was treated with 25-gauge pars plana vitrectomy by one surgeon (K.N.). Before and after vitreous shaving with indentation, peripheral vitreous were analyzed by radial 3 mm B-scanning using iOCT RESCAN (Carl Zeiss Meditec, Germany). OCT images were analyzed postoperatively.
iOCT image analysis enabled the visualization of the angle formed between the retina and detached posterior vitreous membrane around the vitreous base. The mean distance between the edge of the posterior vitreous membrane and the vitreous base was 2124.8 ± 292.8 μm before vitreous shaving and was decreased to 961.7 ± 214.7 μm after vitreous shaving (p < 0.01). No intraoperative adverse events occurred in any case during the present study.
iOCT enables the quantification of the residual peripheral vitreous membranes after vitreous shaving.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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