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目的 :评价Thompson公式计算法在激光角膜屈光手术后散光测定中的有效性和准确性。方法 :对5 3只行激光角膜屈光手术 (包括PRK和LASIK)治疗后存留散光的术眼应用Thompson公式 ,由术前角膜散光推算术后全眼散光 ,并与传统验光方法所得结果进行比较。结果 :应用Thompson公式计算所得的术后全眼散光准确性好 ,与传统验光方法差异无显著性意义 ,且简化散光测定过程 ,结果客观、可靠。结论 :Thompson公式计算法可为角膜屈光手术后散光测定提供客观、准确的结果 ,应用简单方便
OBJECTIVE: To evaluate the validity and accuracy of Thompson’s formula in the determination of astigmatism after laser corneal refractive surgery. Methods Thompson’s formula was used to treat astigmatism after laser corneal refractive surgery (including PRK and LASIK) in 53 cases. Total post-ocular astigmatism was estimated by preoperative corneal astigmatism and compared with the results obtained by traditional optometry . Results: The accuracy of total postoperative astigmatism calculated by Thompson formula was good, which was not significantly different from the traditional optometry methods, and the astigmatism was simplified. The results were objective and reliable. Conclusion: The Thompson formula calculation method can provide objective and accurate results for astigmatism after corneal refractive surgery. The application is simple and convenient