Buck et al 1 have published an informative article regarding intermittent exotropia. They observed that surgical dose per prism dioptre ranged from 0.31 to 1.22 mm (for bilateral surgery) and rightly concluded that overcorrections cannot be avoided merely by getting the dosage right. A few points however deserve discussion. Their statement in the Results section (subheading: Stability in those initially over-corrected) ‘Of 25 patients who were initially over-corrected… 10 (40%) remained over-corrected’ means a better outcome in the majority. This does not support/justify their conclusion in the next sentence ‘Even a small initial overcorrection did not predict good outcome’. Rather, this is opposite to …