Glaucoma is a group of ocular disorders with multifactorial etiology united by a clinically characteristic intraocular pressure-associated optic neuropathy. The disorders can be roughly divided into two main categories, "open-angle" and "closed-angle" (or "angle closure") glaucoma.
Oculoplastic surgery is the cosmetic, corrective, and reconstructive surgery of the eye. It manages and repairs problems primarily related to the tissues or structures surrounding the eye, rather than the eyeball itself. These structures include the eyelids, the tear ducts, and the orbit (bony socket surrounding the eye).