摘要
Purpose:.To investigate the occurrence of corneal incision-induced astigmatism following small incision extracapsular cataract extraction through a superotemporal incision combined with intraocular lens (IOL) implantation. Methods:.A total of 255 cases (301 eyes) who received small incision extracapsular cataract extraction through a superotemporal incision with IOL implantation in the Department of Ophthalmology, Yuyan District Hospital of Guiyang were enrolled in this clinical trial..Postoperative best-corrected visual acuity and astigmatism were measured. The patients underwent 24-week follow-up. Results: In total, 166 patients (65.1%, 166 eyes) completed follow-up..Astigmatism gradually declined between 1 and 12-week postoperatively, and stabilized after 12 weeks. Among 166 patients,.125(75.3%).had astigmatism > 0.5 D at 24 weeks post-operatively,.showing mostly with-the-rule astigmatism. Visual acuity steadily improved up to 12 weeks, and tended to stabilize subsequently..Over the period of 24-week postoperatively,.visual acuity was negatively correlated with astigmatism (r=-0.691,P<0.05). Conclusion:Superotemporal small incision extracapsular extraction combined with IOL implantation is associated with modest astigmatism which declines over the post-operative period.
Purpose： To investigate the occurrence of corneal incision- induced astigmatism following small incision extracapsular cataract extraction through a superotemporal incision com- bined with intraocular lens （IOL） implantation. Methods： A total of 255 cases （301 eyes） who received small incision extracapsular cataract extraction through a superotem- poral incision with IOL implantation in the Department of Ophthalmology, Yuyan District Hospital of Guiyang were en- rolled in this clinical trial. Postoperative best-corrected visual acuity and astigmatism were measured. The patients underwent 24-week follow-up. Results： In total, 166 patients （65.1%, 166 eyes） completed follow-up. Astigmatism gradually declined between 1 and 12- week postoperatively, and stabilized after 12 weeks. Among 166 patients, 125（75.3%） had astigmatism 〉 0.5 D at 24 weeks post-operatively, showing mostly with-the-rule astigmatism. Visual acuity steadily improved up to 12 weeks, and tended to stabilize subsequently. Over the period of 24-week postop- eratively, visual acuity was negatively correlated with astig matism （r=-0.691 ,P〈0.05）. Conclusion： Superotemporal small incision extracapsular extrac- tion combined with IOL implantation is associated with modest astigmatism which declines over the post-operative period.
