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AIM: To evaluate the efficacy of Bi-Flex toric intraocular lens(T-IOL)(Medicontur, Medical Engineering, Ltd., Inc.)implantation to correct preexisting astigmatism in patients having cataract surgery. METHODS: This retrospective consecutive study included 22 eyes of 16 patients with more than 2.50 diopters(D)of corneal preexisting astigmatism having cataract. Preoperative and postoperative uncorrected visual acuity(UCVA), best corrected visual acuity(BCVA), objective and subjective refraction and keratometric and topographic cylinder were measured. Postoperative the toric IOL axis was evaluated using vector analysis. RESULTS: Postoperatively, subjective refractive cylinder was reduced significant(P0 reduced in magnitude from -0.81±2.02D to -0.12±0.62D(PPP >0.05 for J0 and J45). CONCLUSION: Implantation of the Bi-Flex toric IOL is a safe and effective method to correct the preexisting regular astigmatism(greater than 2.50D).