Fig. 1

Sequential changes in intraocular pressure (IOP) during strabismus surgery in patients with thyroid eye disease (TED). The mean IOP at the first measurement was 21.1 mmHg, and it significantly increased to 28.6 mmHg after isolation of the operated muscle (p < 0.001). Then, there was no significant change in IOP before the detachment of the operated muscle (p = 0.136). The mean IOP significantly decreased to 15.5 mmHg after the detachment of the operated muscle (p < 0.001). This increased to 19.1 mmHg after the reattachment of the muscle (p = 0.001). The mean IOP at the last measurement was 18.9 mmHg (p = 0.750). The lower mean IOP compared with first measurement was maintained even after muscle reattachment