The sclera is the outermost layer of the ocular wall, and its main role is to protect the eyeball. 1,2 Its surface is covered by conjunctiva and fascia and does not have direct contact with the outside world. In addition, the sclera is mainly composed of dense interwoven collagen fibers and elastic fibers, with few cellular components and blood vessels. 3,4 These histological features indicate that when scleral