Sclerotic coat is a term used in medicine to refer to the hardening of the connective tissue surrounding the eyeball. This condition is often associated with age-related changes in the eye and can cause vision problems. Synonyms for the term sclerotic coat include sclera, episclera, and Tenon's capsule. The sclera refers to the white outer layer of the eyeball, while the episclera is a thin layer of tissue that lies between the sclera and conjunctiva. Tenon's capsule is a fibrous membrane that surrounds the eye and helps to stabilize it. These terms are often used interchangeably, depending on the context and the specific aspect of the eye that is being referred to.