Proposing a new scoring system in intermittent exotropia: towards a better assessment of control

Objective There is a clinical need for a valid and reliable assessment system to quantify the severity and measure the progression of intermittent exotropia. We have developed a new scoring system (Look And Cover, then Ten seconds of Observation Scale for Exotropia [LACTOSE]) based on the examinee’s potential to regain the phoria for both distance and near fixation. The test takes only 1 minute to complete. The aim of this study was to evaluate...