I read with interest the article by Kniestedt et al1in the September 2004 issue of the ARCHIVES. I would like to point out that a statement they made in the “Comment” section is inaccurate, although it does not significantly affect their conclusions. However, it does represent a misconception about applanation tonometry that appears occasionally in peer-reviewed articles as well as in ophthalmology textbooks.
Tesser PM. Applanation Area in Goldmann Applanation Tonometry. Arch Ophthalmol. 2006;124(11):1664. doi:10.1001/archopht.124.11.1664-a