Amyloidosis is a disease that is characterized by amyloid deposits in specific organs or throughout the body, resulting in organ disorders. In the field of ophthalmology, amyloidosis causes deposits in the cornea or the vitreous body; however, amyloid deposits in the lacrimal gland are rare. We describe the case of a 76-year-old Japanese woman with localized amyloidosis in the lacrimal gland. The mass was located in the deep part of the orbit. Removal of intraorbital masses is a delicate procedure because the anatomical structure of the orbit is complicated. Considering the esthetic outcome and operability, we selected a coronal incision and lateral approach by osteotomy, and performed surgical simulation from the skin incision to the osteotomy using a three-dimensional（3D）3-layer elastic model of the face that we designed to determine the development range, osteotomy range, and surgicalapproach. Moreover, we report the usefulness of the simulation using the 3D 3-layer elastic model of the face.
