Yanan Zhu1, Xinyi Chen1, Peiqing Chen1, Wen Xu1, Xingchao Shentu1, Yibo Yu1, Ke Yao2. 1. Eye Center, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China. 2. Eye Center, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China. Electronic address: xlren@zju.edu.cn.
Abstract
PURPOSE: Comparison of lens capsule-related complications resulting from femtosecond laser-assisted capsulotomy and manual capsulorhexis in patients with white cataracts. SETTING: Eye Center, Second Affiliated Hospital, Zhejiang Medical School, Hangzhou, China. DESIGN: Prospective consecutive nonrandomized comparative cohort study. METHODS: Selected patients were divided into a femtosecond laser-assisted cataract surgery group (FLACS group) and a conventional phacoemulsification cataract surgery group (CPCS group). Each case was recorded as either a type I or type II white cataract. Here, type I was characterized by the presence of a liquefied cortex, whereas type II had a solid cortex. Five experienced phacoemulsification surgeons conducted all surgeries. Lens capsule-related events, including anterior capsule tears, posterior capsule ruptures (PCRs), incomplete capsulotomies, and irregular capsulorhexes were recorded; surgical parameters, postoperative visual acuities, and intraocular lens (IOL) decentrations were evaluated. RESULTS: The study comprised 132 eyes of 132 patients (66 in each group). Anterior capsule tears were significantly more common in the CPCS group than the FLACS group (12.1% versus 0%). All 8 cases of anterior capsule tears were type I cases. Six FLACS cases developed incomplete capsulotomies, four of which were type I cases. The incidences of PCRs and vitreous loss were the same. Capsulotomy produced better circularity index and diameter stability than capsulorhexis. IOLs were better centered in the FLACS group than the CPCS group. The mean ultrasound power, absolute phaco time, effective phaco time, and postoperative visual acuities were similar in both groups. CONCLUSIONS: Compared with CPCS, FLACS decreased the risk for anterior capsule tears in white cataracts, especially in type I cases. However, it did not reduce the incidence of PCR. Incomplete capsulotomy during FLACS could happen in white cataracts. Using FLACS on white cataracts enabled more precise capsulotomies and better-centered IOLs.
PURPOSE: Comparison of lens capsule-related complications resulting from femtosecond laser-assisted capsulotomy and manual capsulorhexis in patients with white cataracts. SETTING: Eye Center, Second Affiliated Hospital, Zhejiang Medical School, Hangzhou, China. DESIGN: Prospective consecutive nonrandomized comparative cohort study. METHODS: Selected patients were divided into a femtosecond laser-assisted cataract surgery group (FLACS group) and a conventional phacoemulsification cataract surgery group (CPCS group). Each case was recorded as either a type I or type II white cataract. Here, type I was characterized by the presence of a liquefied cortex, whereas type II had a solid cortex. Five experienced phacoemulsification surgeons conducted all surgeries. Lens capsule-related events, including anterior capsule tears, posterior capsule ruptures (PCRs), incomplete capsulotomies, and irregular capsulorhexes were recorded; surgical parameters, postoperative visual acuities, and intraocular lens (IOL) decentrations were evaluated. RESULTS: The study comprised 132 eyes of 132 patients (66 in each group). Anterior capsule tears were significantly more common in the CPCS group than the FLACS group (12.1% versus 0%). All 8 cases of anterior capsule tears were type I cases. Six FLACS cases developed incomplete capsulotomies, four of which were type I cases. The incidences of PCRs and vitreous loss were the same. Capsulotomy produced better circularity index and diameter stability than capsulorhexis. IOLs were better centered in the FLACS group than the CPCS group. The mean ultrasound power, absolute phaco time, effective phaco time, and postoperative visual acuities were similar in both groups. CONCLUSIONS: Compared with CPCS, FLACS decreased the risk for anterior capsule tears in white cataracts, especially in type I cases. However, it did not reduce the incidence of PCR. Incomplete capsulotomy during FLACS could happen in white cataracts. Using FLACS on white cataracts enabled more precise capsulotomies and better-centered IOLs.
Authors: Beatriz Vidal-Villegas; José Antonio Gegúndez Fernández; Bárbara Burgos-Blasco; David Diaz-Valle; Ricardo Cuiña-Sardiña; Rosalía Méndez-Fernández; Pedro Arriola-Villalobos; Mayte Ariño-Gutiérrez; Jose Manuel Benítez-Del-Castillo Journal: Int J Ophthalmol Date: 2022-09-18 Impact factor: 1.645
Authors: Mohamed Gamal Ebidalla Elghobaier; Mohamed Farag Khalil Ibrahiem; Ahmed Shawkat Abdelhalim; Ahmed Mostafa Eid; Khalid Al Said Murad Journal: Clin Ophthalmol Date: 2020-05-21