Posterior corneal astigmatism calculations contribute to reduced residual astigmatic error

AMSTERDAM — Residual astigmatism is reduced after cataract surgery when posterior corneal measurements are incorporated into total corneal astigmatism estimation, a study author said here. With the aim of surgery being to correct a patient’s anterior astigmatism after cataract surgery, Yokrat Ton, MD, said the study took into account the contribution of posterior astigmatism to the end result.

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