Objective and subjective outcomes of strabismus surgery in Graves' orbitopathy: a prospective multicentre study

Purpose To assess the change and interrelationship of the field of binocular single vision (BSV) and the quality of life (QoL), tested with two different tools, after one or two strabismus surgeries in patients with Graves' orbitopathy (GO). Methods Prospectively, consecutive patients with GO who were scheduled for their first strabismus surgery were recruited from five centres specialized in the treatment of GO. One week preoperatively and 3 months after the last operation, a full ophthalmic and orthoptic examination was performed. Change in field of BSV, GO‐QoL and thyroid eye disease‐QoL (TED‐QoL) was recorded. Results A total of 59 met all the eligibility criteria of whom 15 underwent two strabismus operations. The median (interquartile range) preoperative score of the field of BSV was 0 (0–0), which improved to 73 (53–85) after the correction(s) (p