Answer: It is not possible to tell why you have uncorrected astigmatism after Cataract Surgery with the toric lens implant without really knowing what the preoperative corneal curvature measurements were, what the corneal topography demonstrated and whether the residual uncorrected astigmatism is of the same axis of orientation as the preoperative astigmatism. The AcrySof® Toric Lens Implant is available up to a T9 and capable of correcting considerably greater amounts of astigmatism than the T6, so one would need to know where the residual astigmatism is coming from. Then, you need to discuss the options for correcting the astigmatism with your Cataract Surgeon which might include eyeglasses, corneal laser eye surgery such as PRK or perhaps Limbal Relaxing Incisions. Under certain circumstances one could consider a Lens Implant exchange but this poses significantly greater risk.
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