Ding Ning, Song Xudong, Wang Xiaozhen, Wei Wenbin
Beijing Tongren Eye Center, Beijing key Laboratory of Intraocular Tumor Diagnosis and Treatment, Beijing Ophthalmology & Visual Sciences Key Lab, Medical Artificial Intelligence Research and Verification Key Laboratory of the Ministry of Industry and Information Technology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Front Med (Lausanne). 2022 Apr 4;9:837800. doi: 10.3389/fmed.2022.837800. eCollection 2022.
To compare the astigmatism correction effects of toric intraocular lenses (IOL) and clear corneal incisions during image-guided cataract surgery.
All patients with regular corneal astigmatism of 0.75-1.5 D underwent cataract surgery and astigmatism correction using the Callisto eye image-guided system. One group had implantation of an AcrySof toric IOL. Another group had implantation of aspheric IOL with 3.0 mm single clear corneal incision (SCCI) on the steep axis. Uncorrected and best-corrected spectacle visual acuity, refraction, and toric IOL axis were evaluated at 1, 4, and 12 weeks postoperatively.
Sixty-eight eyes of 68 patients were included. The mean residual refractive cylinder was 0.34 ± 0.40 D in the toric group and 0.64 ± 0.57 D in the SCCI group. There were no significant differences in residual refractive cylinder, spherical equivalent, uncorrected distance visual acuity (UDVA), and best-corrected spectacle visual acuity (BCSVA) between groups. The percentage of the residual cylinder within ± 0.50 D was 75 and 56% for toric and SCCI cases, respectively ( > 0.1). The mean surgical induced astigmatism vector was 0.61 ± 0.29 D in the SCCI group and 1.04 ± 0.38 D in the toric group. The mean magnitude of error was negative (-0.54 ± 0.48 D) and the correction index was <1.0 ( < 0.05) in SCCI group. At 3 months, all toric IOL alignment errors were within 5 degrees from the intended axis.
Both toric IOL and SCCI can correct low and medium astigmatism effectively with the help of a precise image-guided system.
比较在图像引导白内障手术中， toric人工晶状体（IOL）和透明角膜切口的散光矫正效果。
所有角膜规则散光为0.75-1.5 D的患者均使用Callisto眼图像引导系统进行白内障手术和散光矫正。一组植入AcrySof toric IOL。另一组在陡峭轴上植入非球面IOL并做3.0 mm单透明角膜切口（SCCI）。术后1周、4周和12周评估未矫正和最佳矫正眼镜视力、屈光状态以及toric IOL的轴位。
纳入68例患者的68只眼。toric组平均残余屈光柱镜为0.34±0.40 D，SCCI组为0.64±0.57 D。两组间残余屈光柱镜、等效球镜、未矫正远视力（UDVA）和最佳矫正眼镜视力（BCSVA）无显著差异。toric组和SCCI组残余柱镜在±0.50 D范围内的百分比分别为75%和56%（>0.1）。SCCI组平均手术诱导散光矢量为0.61±0.29 D，toric组为1.04±0.38 D。SCCI组平均误差量为负值（-0.54±0.48 D），矫正指数<1.0（<0.05）。3个月时，所有toric IOL的轴向对准误差均在距预期轴5度以内。
在精确的图像引导系统帮助下，toric IOL和SCCI均可有效矫正中低度散光。
