Effect of central positioning techniques for anterior capsulotomy in femtosecond laser-assisted cataract surgery on intraocular placement and visual quality
10.3980/j.issn.1672-5123.2025.4.02
- VernacularTitle:飞秒激光辅助白内障术中前囊切开中央定位技术对IOL植入后位置和视觉质量的影响
- Author:
Shuaishuai LIU
1
,
2
;
Wei ZHOU
1
,
2
;
Xiaochen DING
1
,
2
;
Shuang ZHANG
1
,
2
;
Qiangqiang CHI
1
,
2
;
Yong LIU
1
,
2
Author Information
1. Aier Eye Hospital, Jinan University, Guangzhou 510071, Guangdong Province, China
2. Aier Eye Hospital Medical Center, Anhui Medical University, Hefei 230041, Anhui Province, China
- Publication Type:Journal Article
- Keywords:
femtosecond laser;
anterior capsule;
intraocular lens(IOL);
visual quality;
lens apex
- From:
International Eye Science
2025;25(4):523-529
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To examine how three distinct central positioning techniques for anterior capsulotomy-pupil center, limbus center, and lens apex-affect intraocular lens(IOL)placement and visual quality following femtosecond laser-assisted cataract surgery(FLACS).METHODS: A total of 36 patients(72 eyes)with age-related cataracts who underwent FLACS and ZCB00 aspherical IOL implantation at Aier Eye Hospital Medical Center, Anhui Medical University between January and December 2023 were included in this prospective study. Patients were divided into three groups based on the central positioning mode for anterior capsulotomy: pupil center, limbus center, and lens apex center groups. IOL alignment and displacement were evaluated using the Casia2 device, and the postoperative visual quality was assessed.RESULTS: At 1 d postoperatively, the IOL tilt for the pupil, limbus, and apex groups were 3.96°±1.51°, 4.63°±1.87°, and 3.90°±2.24°, respectively(F=1.07, P=0.35); IOL decentration values were 0.21±0.10 mm, 0.23±0.16 mm, and 0.21±0.12 mm, respectively(F=0.14, P=0.87); total higher-order aberrations were 0.32±0.40 μm, 0.56±0.61 μm, and 0.53±0.60 μm, respectively(F=1.38, P=0.26); and coma aberrations values were 0.13±0.10 μm, 0.16±0.15 μm, and 0.14±0.15 μm, respectively(F=0.3, P=0.74). All results obtained postoperative day 1 did not differ significantly. At 3 mo postoperatively, IOL tilt values were 5.42°±2.00°, 3.96°±1.44°, and 3.20°±1.19°, respectively(F=12.40, P<0.001); IOL decentration values were 0.33±0.07 mm, 0.23±0.11 mm, and 0.21±0.11 mm, respectively(F=4.99, P=0.008); total higher-order aberrations were 0.67±0.29 μm, 0.44±0.37 μm, and 0.42±0.19 μm, respectively(F=5.50, P=0.006); and coma aberrations values were 0.21±0.12 μm, 0.19±0.12 μm, and 0.12±0.11 μm, respectively(F=3.87, P=0.03). All results obtained 3 mo postoperatively were statistically significant.CONCLUSION: Using the lens apex as the central positioning mode for anterior capsulotomy in FLACS improves postoperative IOL stability and reduces postoperative IOL tilt and decentration. If the lens apex cannot be determined intraoperatively, the limbus center-positioning mode is recommended.
