Abstract
Purpose :
The purpose of this study was to analysis the changes of foveal avascular zone (FAZ) area and vascular density after rhegmatogenous retinal detachment surgery for 1 year, retrospectively
Methods :
Seventeen eyes with adhered retina after rhegmatogenous retinal detachment surgery (vitrectomy or scleral buckling) were included. The changes of FAZ area and vascular density were examined using optical coherence tomography angiography (OCTA) images of 3x3mm2, 6x6 mm2, 15x9 mm2 for 1 year. The oppsite eye was set as the control group for comparison
Results :
Eleven eyes had undergone scleral buckling surgery and six eyes underwent vitrectomy, all seventeen eyes were macular detached state before surgery. At three, six, twelve months postoperatively, difference of FAZ area compared to the control goup was increased to 0.11±0.063mm3, 0.1±0.076mm3, 0.09±0.104mm3. The amount of change decreased in proportion to the recovery period and was significantly different from the control group (p<0.05) at each point. Vascular density difference was also decreased to 3.16±4.24, 2.17±5.49, 1.20±5.00 compared to the control group. The changes of vascular density were recovered with time and significantly different from the control group (p<0.05)
Conclusions :
The changes of FAZ area decreased gradually after rhegmatous retinal detachment surgery in twelve months and were significantly different compared to the control group. Vascular density also decreased after surgery but recovered with time. Therefore, with the analysis of FAZ area and vascular density changes, could be used as a prognostic factors of the recovery
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.