ABSTRACT
From 1982 to 1999 eye muscle surgery was performed in 167 patients suffering from endocrine orbitopathy. Recessions were the preferred procedure and topical anaesthesia was used to allow dosage under intact active motility. In 64 patients only one inferior rectus muscle was recessed. This sub-group was analyzed in the respect to functional results, dose-effect correlation and the existence of a learning curve. 95% showed fusion in primary position, 84% had a field of binocular single vision of 10° off primary position and 61% had no double vision within 30°. No dose-effect correlation could be demonstrated. This supports the basic idea that intraoperative dosage improves motility and thus reduces any deviation irrespective of it’s preoperative value.
