AIM: To analyze the associated factors of poor vision after phacoemulsification operation.

METHODS: Clinical data of cases with poor vision after cataract phacoemulsification combined with IOL implantation from 341 patients(418 eyes)during Jan.2015 to Jan.2016 in our hospital were collected and logistic correlation analyzed.

RESULTS: The incidences of postoperative low vision were 10.3% for one month after operation. Forty-three eyes were reported low vision, and 41 of 43 the patients with postoperative low vision had fundus oculi disease before operation, which included 20 eyes(48.8%)with age-related macular degeneration, 16 eyes(39.0%)with diabetic retinopathy, 3 eyes(7.3%)with glaucomatous optic neuropathy, 1 eye(2.4%)with pathologic myopia of retinopathy and 1 eye(2.4%)with branch retinal vein occlusion.

CONCLUSION: The associated factors of poor vision after phacoemulsification operation are preoperative eye diseases and the nuclear hardness, and preoperative eye diseases may be the main causes of postoperative low vision. Comprehensive examination should be attached importance to, and be careful in the operation to decrease the harm for visual performance.