AIM: To investigate the effect of LECs removal on the stability of lens capsule bag in patients with high myopia.

METHODS: From March 2018 to April 2019, 98 cases(120 eyes)of cataract patients with high myopia were treated in Cataract Department of Hebei Province Eye Hospital. They were divided into two groups according to whether the LECs were removed during the operation. In group A, the anterior and posterior capsule were polished in 50 cases(60 eyes), while in group B, 48 cases(60 eyes)were not polished. During the follow-up period we used anterior segment OCT to detect the change of effective intraocular lens position(ELP), the eccentricity of intraocular lens(IOL)and the reduction of anterior capsule opening in the two groups, and used slit lamp to observe the occurrence and degree of PCO.

RESULTS: We compared the changes of ELP(0.16±0.06mm vs 0.55±0.07mm)and the changes of contraction of anterior capsule(0.18 ± 0.16mm vs 0.92 ± 0.13mm)on the first day and three months after operation. Three months after operation, we compared the IOL eccentricity of the two groups(0.02±0.005mm vs 0.69±0.23mm). There were differences between the two groups(P<0.05). At 3mo after operation, the PCO of group A was observed by slit lamp: grade I 4 eyes, grade II 2 eyes, grade III 1 eye. The PCO of group B: grade I 16 eyes, grade II 8 eyes, grade III 4 eyes and grade IV 3 eyes. There was significant difference between the two groups(Z=-4.765, P<0.01).

CONCLUSION: The removal of LECs could reduce the contraction of anterior capsule, decrease the change of ELP and enhance the stability of bag IOL complex, which played a good role in reducing PCO.