Optical coherence tomography angiography findings in preeclampsia.

Objectives: To investigate vascular density analysis in the superficial (SCP) and deep capillary plexus (DCP), foveal avascular zone (FAZ), peripapillary vascular density analysis (PPCVD), and peripapillary retinal nerve fiber thickness analysis (PPRNFL) using optical coherence tomography angiography (OCTA) in pregnant women with preeclampsia and to compare the obtained values with healthy pregnant and nonpregnant healthy individuals.

Methods: A total of 98 pregnant women (55 had preeclampsia, 43 were healthy pregnant women) and 38 healthy nonpregnant women of reproductive age were included in the study. The patients were divided into three groups. Group 1 consisted of pregnant women with preeclampsia, group 2 comprised healthy pregnant women without preeclampsia, and group 3 consisted of healthy women who were not pregnant. All participants underwent a comprehensive ophthalmologic examination including OCTA.

Results: Superficial foveal density (SFD) and deep foveal density (DFD) were lower in group 1 than in group 3 (p = 0.033, p = 0.041, respectively). Deep parafoveal density (DPD), deep temporal density (DTD), and deep superior density (DSD) values were lower in group 1 than in group 2 and group 3 (p = 0.001). PPRNFL superior and mean values were higher in group 1 and group 2 than in group 3 (p = 0.022, p = 0.029, respectively). The mean superior and inferior RPCVD values were significantly higher in group 1 than in group 2 and group 3 (p = 0.001, p = 0.043, and p = 0.001, respectively).

Conclusions: In preeclampsia, OCTA shows changes in the microvascular structure of the retina, even without retinopathy findings on biomicroscopy examination.