Comparison of efficacy in various location of two small incision for age-related cataract surgery

Objective To select different position of small incision for cataract based on preoperative corneal astigmatism and to evaluate the preoperative astigmatism correction and postoperative vision outcomes. Methods Data from 59 cases (68 eyes) age-related cataract patients were collected of preoperative corneal astigmatism (≥2.0 diopter, D), the small incision cataract surgery (SICS) were implemented. According to the position of incision the patients were divided into experimental group and control group. Experimental group included 28 cases (33 eyes), the incision on the corneal astigmatism biggest meridian; Control group included 31 cases (35 eyes), the incision was located in the upper part. Corneal astigmatism and uncorrected visual acuity (UCVA) changes from two groups was detected in 3 days, 1 month and 3 months after operation, respectively. Results There was no significant difference (P>0.05) on preoperative average corneal astigmatism and UCVA on two groups. Postoperative average corneal astigmatism compared with preoperative reduction was on both groups, however, the average corneal astigmatism in the experimental group after surgery at each time period was significantly lower vs the control group, differences were statistically significant (P<0.05). The mean postoperative UCVA of all patients with good results compared with preoperative on both groups. The mean UCVA in the experimental group after surgery at each time period was higher than the control group, the difference had statistical significance (P<0.05). Conclusions For corneal astigmatism ≥2.0 D age-related cataract patients, select small incision at different position can effectively correct preoperative corneal astigmatism and improve the postoperative UCVA. Key words: Age-related cataract; Small incision cataract surgery; Corneal astigmatism; Uncorrected visual acuity