Clinical Observation of Refractive Change and Intraocular Lens Position in Patients After Nd:YAG Laser Posterior Capsulotomy
Objective To study the refractive change and the position of intraocular lens after Nd:YAG laser posterior capsulotomy.Methods A prospective study was conducted on 65 patients(65 eyes)with posterior cataract treated in the Second People's Hospital of Zhengzhou from June 2022 to January 2023.All patients underwent Nd:YAG laser posterior capsulotomy,according to the the incision length was divided into two groups,small aperture group(3.5-4.5 mm,33 eyes in 33 cases)and large aperture group(4.6-5.5 mm,32 eyes in 32 cases).The best corrected visual acuity(BCVA),diopter,sphere equivalent(SE),intraocular pressure,anterior chamber depth and macular thickness,intraocular lens inclination,eccentricity and complications were compared between the two groups before surgery,1 week after surgery,1 month after surgery and 3 months after surgery.Results At 1 week,1 month and 3 months after surgery,BCVA were better than those before surgery(P＜0.05),but there was no statistical significance between the two groups(P＞0.05).There was no significant difference in diopter between the two groups at 1 week,1 month and 3 months after surgery(P＞0.05).There was no significant difference in intraocular pressure between small aperture group and large aperture group at 1 week,1 month and 3 months after surgery(P＞0.05).There was no significant difference in anterior chamber depth and macular thickness between small aperture group and large aperture group at 1 week,1 month and 3 months after surgery(P＞0.05).There was no significant difference in the inclination and eccentricity of intraocular lenses between the small aperture group and the large aperture group at 1 week,1 month and 3 months after surgery(P＞0.05).There was no significant difference in the incidence of complications between the large aperture group[9.38％(3/32)]and the small aperture group[3.03％(1/33)](P＞0.05).Conclusion Nd:YAG laser posterior capsulotomy with a diameter of 3.5-5.5 mm does not cause clinically significant dioptric changes and intraocular lens position changes,and does not affect anterior chamber depth,macular thickness and intraocular pressure.No significant farsighic drift was observed after 4.6-5.5 mm large aperture incision,both of which are safe and reliable.
Nd:YAG laserposterior capsulotomyrefractionintraocular lens position
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