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Analysis of astigmatic keratotomy with a 5.0-mm optical clear zone. 1/6/1996 Chavez S, Chayet A, Celikkol L, Parker J, Celikkol G, Feldman ST.
Am J Ophthalmol. 1996 Jan;121(1):65-76.

PURPOSE: To investigate the surgically induced refractive change after astigmatic keratotomy with a 5.0-mm optical clear zone in patients with severe naturally occurring astigmatism. METHODS: We analyzed surgically induced refractive change in 40 consecutive eyes undergoing astigmatic keratotomy with a 5.0-mm optical clear zone. The surgically induced refractive change was calculated according to the method of Holladay, Cravy, and Koch with some modifications.

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