Study finds, Temporal Changes of Parafoveal Microvasculature
A Study was conducted to investigate whether the parafoveal capillary architecture predicts clinical course and visual outcomes after epiretinal membrane (ERM) surgery.

A total of 71 eyes of 71 patients treated with vitrectomy for idiopathic ERM were enrolled. The parafoveal capillary displacement and fractal geometries were compared according to the stage of ERM. Correlations between the parafoveal capillary displacement in the superficial capillary plexus, the fractal dimension and lacunarity in the deep capillary plexus (DCP), foveal thickness, and visual outcomes were evaluated.

Results:
--Compared with eyes with mild ERM, eyes with severe ERM exhibited higher parafoveal capillary displacement in the superficial capillary plexus, lower fractal dimension and higher lacunarity in the DCP, and greater foveal thickness.

--The parafoveal capillary displacement in the superficial capillary plexus and fractal dimension and lacunarity in the DCP improved significantly, particularly at 1 month postoperatively and reached a plateau thereafter.

--The preoperative fractal dimension in the DCP showed a significant correlation with the best-corrected visual acuity at all follow-up time points.

Conclusively, The visual acuity before and after ERM surgery was highly linked with the parafoveal fractal dimension in the DCP. The parafoveal fractal dimension could be used to predict visual results following ERM surgery.

Source: https://journals.lww.com/retinajournal/Abstract/2021/09000/TEMPORAL_CHANGES_OF_PARAFOVEAL_MICROVASCULATURE.7.aspx
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