Objective: To observe the changes and the relatively stable time of corneal curvature after phacoemulsification(PHACO) and IOL implantation on age-related cataract patients with transparent corneal incision. Methods: A total of 200 patients(216 eyes) with 3.0 mm transparent corneal incision cataract phacoemulsification and IOL implantation were collected in the hospital of the First Affiliated Hospital of Harbin Medical University(Wu Liande Memorial Hospital)from June 2016 to August 2016. Among them, 88 males, 128 females, mean age 71.2 years old. Performed relative examination before the operation, and check the corneal curvature,vision, intraocular pressure of preoperative, first day after operation, first week after operation, first month after operation, and three months after operation, and perform the corresponding statistical analysis. Results: After surgery, the recover of vision which better then0.5 at different time: the first day was 147 eyes(68.05 %), one week was 175 eyes(81.02 %), one month was 193 eyes(89.35 %) and the three month was 197 eyes(91.20 %). The preoperative corneal curvature was 43.94±1.35, postoperative the first day and the first week corneal curvature respectively of 44.98±1.06, 44.45±1.18, compared with the preoperative have significant difference(p < 0.05), one month and three months after the corneal curvature were 44.13±1.27, 44.02±1.24, compared with the preoperative was no statistically significant difference(p < 0.05); Intraoperative astigmatism reached its maximum on the first day after surgery, then gradually decreased,there was a significant difference between one month, three months and one day after surgery(p < 0.05). There was no significant difference between three months and one month after surgery(p < 0.05). Intraoperative astigmatism decreased gradually and stabilized in a month. Conclusion: Patients with 3.0 mm transparent corneal incision cataract phacoemulsification and IOL implantation was stable in one month after operation, and recovery to preoperative status. Refractive status tends to be stable and the less invasive corneal astigmatism, Postoperative visual acuity returned to a better condition. [ABSTRACT FROM AUTHOR]