Scleral edema

Scleral edema is common in scleritis. The sclera is a tissue with few cells and blood vessels, mostly composed of collagen. Its surface is covered by bulbar conjunctiva and bulbar fascia, and does not directly contact the external environment, so it is rarely ill. According to statistics from most scholars, the incidence rate is only about 0.5% of the total number of patients with eye disease. Due to the collagen properties of the basic components of the sclera, the slow pathological process and the resulting collagen disorders are difficult to repair. The eyeball is the "window" of collagen, so scleritis is often an ocular manifestation of connective tissue disease throughout the body.