Effect of 1.8mm coaxial micro-incision cataract phacoemulsification on corneal astigmatism

AIM: To observe the effect of 1.8mm coaxial micro-incision cataract phacoemulsification on corneal astigmatism, and compared with the effect of traditional 3.2mm small incision cataract phacoemulsification.METHODS: Totally 160 patients(168 eyes)with age-related cataract were selected, whose age from 50 to 83 years old. Their lens opacities classification was Ⅱ-Ⅴ grade. Two groups were divided randomly and each group included 84 eyes. They performed 1.8mm coaxial micro-incision(micro-vision group)and traditional 3.2mm small incision(control group)of cataract phacoemulsification respectively. After 1d, 1wk, 1mo follow-up, their naked vision and astigmatism changes were recorded. The χ2-test and t-test was used for the statistical analysis.RESULTS: After 1d, 1wk, 1mo of the micro-incision surgery, naked vision ≥0.5 of the patients were 79%, 83% and 94% respectively. In control group, naked vision ≥0.5 were 46%, 64% and 85% respecticvely. There was significant difference between the two groups(PPPCONCUSION: The corneal astigmatism of 1.8mm coaxial micro-incision cataract phacoemulsification was smaller than that of the conventional phacoemulsification and visual recovery was also better after surgery