Change in the cycle of circadian strabismus.

ABSTRACT

PURPOSE/METHODS: We observed a change in the typical circadian, 24-hour pattern of strabismus (esotropia) in a 2-year-old patient. Methods used include study of the history of the deviation pattern, observation, and measurement of the deviation on the day after travel and six weeks later. RESULTS/CONCLUSIONS: The patient responded to standard recession-resection surgery with a straight eye position daily, through three months of follow-up. Rapid travel over six time zones probably caused the change in the circadian pattern of strabismus.