Abstract: This paper exploresd the application value of optical coherence tomography angiography (OCTA) in the changes of macular microcirculation after cataract surgery. Sixty cases (60 eyes) of cataract patients in our hospital were divided into poor group and good group according to the best corrected visual acuity (BCVA) one month after operation. OCTA was performed before and after the operation. In the good group, the full-thickness and inner-layer average retinal thickness and DCP around the macular fovea were higher than those before the operation, and the macular FAZ area was smaller than that before the operation. In the bad group, the full-thickness and inner-layer average retinal thickness of the macular area was lower than that in the good group, and the macular FAZ area was larger than that in the good group, one month after operation, DCP around macular fovea was lower than that in good group (P<0.05). The mean retinal thickness of the whole and inner layers of the macular region before operation was positively correlated with BCVA, and the macular FAZ area was negatively correlated with BCVA. The mean retinal thickness of the whole and inner layers of the macular region before operation and 1 month after operation, the macular FAZ area, and the peripheral DCP of the macular fovea one month after operation were significantly correlated with poor postoperative visual recovery (P<0.05). It is suggested that the parameters of macular microcirculation measured by OCTA have a good evaluation effect on BCVA after cataract surgery.

Key words: optical coherence tomography angiography, cataract, macular microcirculation, best corrected visual acuity, superficial retinal microvascular