Transient Alteration Of Retinal Microvasculature After Refractive Surgery

OPHTHALMIC RESEARCH(2021)

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摘要
Purpose: The purpose of this study was to determine the retinal microvasculature in myopic patients after refractive surgery. Methods: Thirty-six right eyes of 36 patients who undertook femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) were imaged using optical coherence tomography angiography preoperatively, 1-week, 1-month, and 3-month postoperation, respectively. Vessel density was analyzed after the correction of magnification, and results were correlated with clinical manifestations, including spherical equivalent (SE), amplitude of accommodation, intraocular pressure, and axial length. Results: There was a significant decrease in microvascular density 1-week postoperation compared to preoperative measurement (p < 0.05), and it recovered 1-month postoperation. Microvascular densities in superficial vascular plexus (r = 0.528, p < 0.01), deep vascular plexus (r = 0.500, p < 0.01), and retinal vascular network (r = 0.390, p < 0.05) were all positively correlated with the decrease of the SE 1-week postoperation. Conclusion: The transient alteration of the retinal microvasculature after refractive surgery appeared to recover quickly, which may not impact the visual function after FS-LASIK.
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关键词
Myopia, Microvascular density, Optical coherence tomography angiography, Femtosecond laser-assisted laser in situ keratomileusis
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