Seeing double over 6 months after ptosis surgery

Double vision after ptosis surgery is quite unusual. Double vision is complex and does warrant a careful assessment to determine what is needed to address the issue. Generally I would recommend that you get assessed by a highly experienced pediatric ophthalmologist. Although you are an adult, pediatric surgeons do a lot of measuring of double vision and correcting this condition in both children and adults. I would seek care at either UCLA or USC. Both institutions have this clinical resource. There is help for this.