MEDiscuss • Medical News • Ninety percent of children with intermittent exotropia will become nearsighted by 20 years of age

Intermittent exotropia is a condition in which the eyes turn outward while looking at an object. Researchers followed 135 patients with intermittent exotropia over a 20-year period and found that slightly more than 90 percent of these children became nearsighted by the time they reached their 20s.