Scleritis (inflammation of sclera) is a strong indication of the underlying medical problem. It can be due to fungal, viral or parasitic infection, trauma, exposure to chemicals, poisonous gases or due to post-surgical complications.
Mast cells are granulated cells typically found in connective tissue. These cells mediate immune responses to foreign particles. In particular, they release large amounts of histamine and enzymes in response to antigen recognition.
Histamine is. made and stored within white blood cells (leukocytes) such as mast cells in tissues and. basophils that circulate in blood. When the immune system is activated in response to. foreign material entering the body, histamine is the first defence chemical, or more.