The eyelids protect the eyes and therefore vision. Diseases altering the eyelid structure or function threaten sight as well as cosmesis. An updated comprehensive understanding of eyelid anatomy, physiology, pathology, diagnostics, and therapeutics is fundamental to a patient’s physical and psychological well-being. Eyelid diseases are involved in multiple pathological conditions. In this special series of Annals of Eye Science, the distinguished authors provide an update on the prognosis and treatment of eyelid diseases due to tumor, orbital fracture, congenital ptosis, and prosthetic eyes, among others, and introduce three-dimensional (3D) anthropometry to evaluate the periocular morphology pre- and postoperatively.

Disclosure:
The series “Eyelid Surgery” was commissioned by the editorial office, Annals of Eye Science without any sponsorship or funding. Ludwig M. Heindl, Ming Lin and Vladimir Kratky are serving as the unpaid Guest Editors for the series.