[An intraocular lens power calculation for high XXXX ].

@entity940 @entity6755 @entity1714
The accuracy of intraocular lens power calculation formulas for the axial high @entity1714 were examined, especially regarding the point of the predictive refraction. We examined 170 eyes with axial lengths of 27 mm or longer, with postoperative visual acuity of 0.5 or more, and postoperative @entity940 of less than +/- 2D. Five formulas were tested for accuracy in predicting postoperative refraction. They were the L- @entity6755 , @entity6755 , @entity6755 II, @entity6755 /T, and Binkhorst formulas. The @entity6755 formula tended to predict less @entity1714 than the actual postoperative refraction. The @entity6755 II and Binkhorst formulas predicted more @entity1714 than the actual postoperative refraction. The best results were produced by the L- @entity6755 and @entity6755 /T formulas. The accuracy of the L- @entity6755 formula predictions were measured for each of the four myopic levels. The same was done for the @entity6755 /T formula. For both formulas, there was no statistically significant difference in accuracy of prediction for the four myopic categories. The two formulas are considered to be useful for high myopic cases.
