[A clinical investigation on cataract surgery with 2.8 mm incision].

OBJECTIVE: The results of phacoemulsification which was performed through a 2.8 mm clear cornea tunnel incision and foldable intraocular lens (IOL) implantation were analyzed. METHODS: On 126 eyes with cataract of 105 cases, phacoemulsification with foldable IOL implantation was randomly performed. The results of postoperative vision, refraction, corneal edema, anterior chamber flare and the rate of corneal endothelial cell loss were retrospectively summarized. RESULTS: The uncorrected visual acuities of postoperative 1 day, 3 days, 1 week, 2 - 3 months, >or= 0.5 were in 102 eyes (81.0%), 108 eyes (85.7%), 112 eyes (88.9%) and 112 eyes (88.9%), respectively. The mean diopters of astigmatism at postoperative 3 days, 1 week, 1 month and 3 months were (1.09 +/- 0.51) D, (1.02 +/- 0.47) D, (0.88 +/- 0.52) D and (0.81 +/- 0.62) D, respectively. The mean diopters of astigmatism at postoperative 1 week, 1 month and 3 months compared with that before the surgery had no significant difference (P > 0.05). The comparison between the preoperative astigmatism and that at postoperative 3 months showed that only about 0.08D of change existed. The postoperative corneal edema and anterior chamber flare were mild, the anterior chamber configuration remained well, and the rate of endothelial cell loss was 11.9%. CONCLUSIONS: The surgical incision is small and easy to perform. Postoperatively, the reaction is mild, the change of astigmatism is small in degree, the best visual acuity can be obtained at the early stage and the refractive status is stable, thus the duration for restoration is greatly shortened.