To evaluate the Haigis-L method of IOL Master that does not require preoperative data for intraocular lens (IOL) power calculations and compare the results with other methods requiring preoperative data.

Fifty eyes of 25 patients who had undergone laser-assisted subepithelial keratectomy (LASEK) and were followed for 1 month or longer were selected for this study. IOL power was calculated by four different methods: clinical history method, Feiz-Mannis method, modified Masket method, and Haigis-L method.

The mean calculated IOL powers showed the following results: clinical history method; 23.65D, Feiz-Mannis method; 24.45D, modified Masket method; 22.89D, and Haigis-L method; 23.80D. Each IOL power differed statistically from others ( p =0.000). The difference between each method was analyzed by the Bonferroni test, with the Feiz-Mannis method showing the highest result and the modified Masket method, the lowest. The clinical history method and Haigis-L method presented similar results.

For patients without data prior to corneal refractive surgery, the Haigis-L method is as accurate as the clinical history method. Therefore, comparatively accurate results can be produced in IOL power calculations using the Haigis-L method after corneal refractive surgery.