Assessing Variability of Control Within a Single Day in Intermittent Exotropia

PURPOSE To assess intra-individual hour-to-hour variability of control in intermittent exotropia using a simple office scale: Look And Cover, then Ten seconds of Observation Scale for Exotropia (LACTOSE). METHODS In this prospective cross-sectional study, the degree of control for distance and near was measured using the LACTOSE, a 5-point scale ranging from 0 to 4. A single investigator performed multiple measurements of the control of each...