Reply

We thank Chhablani and associates for their interest in our article and their comments, which mainly concern the methodology of our study. They expressed concern that some of our patients with intermittent exotropia may have a normal range of ocular torsion, as shown in several previous studies on fundus torsion in normal individuals. We agree with this comment. However, the ultimate goal of our study was to assess not the actual degree of ocular torsion, but rather the distribution of ocular torsion in normal controls and patients with intermittent exotropia. Therefore, what we pointed out in our study was the fact that the incidence of ocular torsion (either extorsion or intorsion) was significantly higher in the intermittent exotropia group than in the normal control group. Most of our patients with intermittent exotropia (70%) had no torsion, which means, as Chhablani and associates mention, most of them might have had a normal range of ocular torsion. One should understand that the normal range of ocular torsion may include no torsion, intorsion, or extorsion. The meaningful finding in our study was that the ocular extorsion and intorsion was much more frequent in patients with intermittent exotropia compared with normal individuals.