Application of T-hook pre-chopping combined with capsule fine treatment technology in cataract surgery for high myopia

Abstract

AIM: To explore the clinical efficacy of the T-hook pre-chopping combined with capsule fine treatment technology for patients with high myopia and cataract.METHODS: From March 2016 to February 2019, 56 cases(80 eyes)of cataract patients with high myopia were treated in cataract department of Hebei Province Eye Hospital. They were randomly divided into A and B groups, 40 eyes in each group. Group A underwent T-hook pre-chopping combined with fine capsular treatment. Cataract phacoemulsification combined with intraocular lens implantation was purely performed in group B. We compared the cumulative release energy of ultrasound during operation between the two groups. We also observed the best corrected visual acuity(BCVA), the amount of contraction of the anterior capsule, the degree of posterior capsule opacification, intraocular lens neutrality and complications for more than 6mo.RESULTS: The cumulative release energy of ultrasound in group A was less than that in group B(12.23±3.61 vs 20.46±4.61, PZ=5.328, P=0.002). The changes of anterior capsular contraction and intraocular lens decentration(0.18±0.14, 0.02±0.007mm)were less than those of group B(0.82±0.23, 0.65±0.240mm)(PCONCLUSION: We used T-hook pre-chopping combined with capsule fine treatment technology to treat cataract with high myopia, which could reduce the use of ultrasound energy during operation, reduce the risk of posterior capsule rupture, effectively avoid the occurrence of posterior cataract, and achieve satisfactory clinical effect.

Keywords

• high myopia
• t-hook pre-chopping
• polishing of anterior and posterior capsule
• continuous circular capsulorhexis of posterior capsule