Monday, December 8, 2014

Astigmatism Lens Implant Correction Calculations

Question: Can you use a toric IOL for cataract surgery that corrects down to 1.50, for astigmatism that is only 0.75?

Answer: Toric lensimplant calculation may not match the amount of astigmatism in your eyeglasses. Is the .75 the eyeglass refraction? Is the astigmatism on the cornea as demonstrated by the corneal topography? Is the astigmatism with the rule or against the rule? Is the placement of the incision going to impact the position or the degree of the astigmatism postoperatively? And there is more to be considered in the calculation. Please leave the calculation to your cataract surgeon and if you don’t feel confident with his or her choice then get a second opinion.

Important Note: The information presented on the About Cataract Surgery Blog or provided in response to a request for information in the Ask Cataract Surgeons section on is not intended to diagnose or treat eye problems, eye conditions or eye diseases including appropriateness of treatment, risks, complications or side effects as related to Cataracts, Cataract Surgery or Lens Implants. In particular a response to an inquiry made on the Ask Cataract Surgeons section of is not meant to take the place of the professional medical care provided by your eye doctor, ophthalmologist and Cataract Surgeon. Contacting us via e-mail or any other means is not a substitute for medical care.

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