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Toric IOL Implantation

Corneal astigmatism is frequently seen in a significant proportion of patients attending for cataract surgery and can greatly influence the refractive outcome of surgery. Residual astigmatism after phacoemulsification can leave the patient symptomatic and significantly decrease vision. There are various methods described in the literature to correct pre-existing corneal astigmatism at the time of cataract surgery. Toric IOL is one of the possible options with good potential and has been increasingly used by many cataract surgeons to address corneal astigmatism. Corneal astigmatism of more than 1.2 D cannot be corrected by a 2.8 to 3.2 mm incision at the limbus; wider or additional incisions would be needed. The use of a toric IOL can significantly improve outcomes in the presence of pre-existing corneal astigmatism of more than 1D, and offer resultant unaided visual acuity postoperatively that compares well to the outcomes enjoyed by the majority of patients that do not require a toric IOL. Use of a toric IOL is safe, effective and reasonably predictable.