Surgical treatment of various types of orbital diseases, lacrimal duct diseases and pediatric lacrimal duct diseases. Including surgical treatment of benign and malignant orbital tumors, orbital trauma blowout fractures, thyroid eye disease, correction of malignant exophthalmos, surgical treatment of lacrimal gland prolapse, acute and chronic dacryocystitis, lacrimal duct obstruction, lacrimal duct tumors and pediatric lacrimal duct diseases, etc.