Purpose: to assess the effectiveness and safety of a new technique for reduction of pre-existing astigmatism, which is the opposite clear corneal incisions.Methods: a prospective, clinically controlled study. Thirty eyes of 28 patients with cataract and pre-existing regular astigmatism were included in this study. Keratometry and corneal topography were performed to identify the steepest corneal meridian. Two identical 3.5 mm clear corneal incisions were made opposite each other on the steepest meridian. One incision was used to perform phacoemulsification and to insert the foldable IOL; the second incision was not used during the procedure. The incisions were not sutured. Patients were followed up by keratometry and corneal topography at 1 month and 3 months postoperatively. Calculation of the surgically induced astigmatism (SIA) was done using the Cartesian coordinate system. Results: The mean corneal astigmatism preoperatively was 2.10 D + 0.90 (SD). It was reduced to 1.13 D + 0.89 and to 1.11 D + 0.87 at the postoperative 1 and 3 months, respectively. Decay in corneal astigmatism was 0.97 D and 0.99 D at 1month and 3 months, respectively. The mean SIA calculated by this method was 0.94 D. Most patients had postoperative axis shift of variable degrees. After 3 months, 19 eyes (63.3%) were left with residual astigmatism less than 1.0 D, 3 (10%) with 1.0 D and 8 eyes (24.6%) with more than 1.0 D.Conclusion: OCCIs technique using sutureless 3.5 mm incisions is a simple and safe method which resulted in variable reduction of PEA in almost all patients, with stable results from the first postoperative month.