Assessing Surgically Induced Astigmatism

The article by Naeser on Popperian falsification of methods of assessing surgically induced astigmatism1 completely misrepresents the article we published in 1992.2 There was no suggestion in our article of averaging or “magnifying astigmatism not considering axis” or of separately and independently averaging the magnitude and direction of astigmatism, and Naeser is incorrect in stating this. Indeed, his attempt to group our article of 1992 under “astigmatic magnitude not considering axis” is unfounded and itself a falsification. The methods of calculating the mean change in surgically induced astigmatism have been addressed.3.