Early clinical observation on the application of Bigbag and MI60 intraocluar lens implantation in cataract patients with high myopia

Objective To discuss and explore the early clinical effects between the Bigbag and MI60 intraocluar lens( IOL) implantation in cataract patients with high myopia. Methods We investigated the clinical data of 83 patients who had received phacoemulsification and IOL implantation. The patients were divided into two groups: group A( n = 44,61 eyes) all used the Bigbag IOL and group B( n = 39,56 eyes) all used MI60 IOL. Preoperative and postoperative axial length,anterior chamber depth,visual acuity,BCVA( best corrected visual acuity),contrast sensitivity,refractive status were recorded. Position of the intraoeular lens and postoperative complications were observed. Results( 1) The postoperative anterior chamber increased in two groups than preoperative one,and group B increased more significantly than group A( P 0. 05). The variations in distance from the posterior capsule membrane to the retina were significantly different between group A( 2. 92 ± 0. 79) mm and group B( 4. 51 ± 0. 81) mm.( 2) The diopter of refractive error 6 months after surgery: 43 eyes( 70. 46%) of bigbag group were within 1. 0 D,and 32 eyes( 57. 14%) of M160 group were within 1. 0 D.( 3) The postoperative visual acuity of two groups was improved significantly compared with the preoperative( P 0. 05),but there was no significant difference on best corrected visual acuilty and curves of contrast sensitivity. Postoperative subjective visual satisfaction in group A was superior to group B.( 4) Complications: goup A has 4 cases of capsular opacification and 2 cases of posterior vitreous detachment;group B has 5 cases of capsular opacification,1 case of IOL deviation,and 5 cases of posterior vitreous detachment. Conclusions This clinical research showed Bigbag IOL is more suitable than MI60 IOL in cataract patients with high myopia,which is more effective and safe.