Title : Effect of Nd: YAG capsulotomy on retina
Abstract:
Purpose: To evaluate the effect of neodymium: yttrium aluminium garnet (Nd: YAG) laser capsulotomy on retinal thickness and microcirculation by wide-field swept-source optical coherence tomography (WF SS-OCTA).
Methods: 62 eyes of 62 patients who had posterior capsule opacification underwent Nd:YAG laser capsulotomy and with complete follow-up results were included. WF SS-OCTA of the 12 x 12 mm macular region was examined preoperatively and postoperatively (1st day and 1st week). The retinal thickness and microcirculation parameters were compared before and after Nd:YAG laser capsulotomy.
Results: We found that the retinal microcirculation was higher on the postoperative 1st day than on the preoperative day, gradually recovered on the postoperative 1st week, and was significantly lower compared with that on the postoperative 1st day (p < 0.05), and there was no difference in retinal microcirculation on preoperative day and postoperative 1st week (p > 0.05). However, none of the differences in spherical equivalent refraction?best-corrected visual acuity or intraocular pressure between preoperative and postoperative 1st day was correlated with the differences in retinal microcirculation parameters between preoperative and postoperative 1st day. Besides, the thickness of each retinal layer also showed no statistical difference between preoperatively and postoperatively (p > 0.05).
Conclusion: The increase of retinal microcirculation was more sensitive than the change of thickness on the postoperative 1st day, but gradually returned to normal on the postoperative 1st 1 week, Nd:YAG laser is a safe procedure as determined by WF SS-OCTA.
Keywords: retinal microcirculation, retinal thickness, Nd:YAG laser capsulotomy, posterior capsule opacification, WF SS-OCTA.
