[Changes in refraction after cataract extraction and IOL implantation].

The refraction changes were followed up in 61 eyes 1 week to 3 years after extracapsular cataract extraction and posterior chamber IOL implantation. The variation in spherical power during follow-up was not significant, while the changes in astigmatism were very significant at end of the first week, when the mean value of cylinder power was 4.21 D and the axis in 82% of the eyes was with-the-rule. After 3 months, the astigmatism became reduced and relatively stable, when the mean power was 1.90 D and the axis in 65.6% of the eyes against-the-rule. The astigmatism continued to change afterwards, especially in the position of axis.