Transverse Keratotomy Followed by LASIK for the Treatment of Naturally Occurring Astigmatism

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Abstract

PURPOSE

To evaluate the efficacy of transverse keratotomy followed by LASIK for patients with high amounts of naturally occurring astigmatism.

METHODS

Thirteen eyes with naturally occurring astigmatism ranging from −3.75 to −6.50 diopters (D) underwent sequential transverse keratotomy (60° at 6 mm) and LASIK procedures. The effect of these two procedures on the amount of astigmatism was studied.

RESULTS

Transverse keratotomy led to a 46% reduction in refractive cylinder from −5.50±0.80 D to −3.00±1.00 D. After LASIK, the initial refractive astigmatism was reduced by 90% to −0.50±0.50 D with a minimum follow-up of 6 months.

CONCLUSIONS

The combined technique of transverse keratotomy followed by LASIK is an effective and accurate way to treat high amounts of naturally occurring astigmatism, allowing the size of the optical zone of the excimer laser ablation to be maximized.

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