1、Chapter 9 Disease of the scleraScleraSclera is the most outer layer of the ocular wallmainly composed of collagenous and elastic fibers that closely mingle with each other and with less cellular component and blood vessel.Scleral disease mainly is inflammationeasy to bring about on the surface, espe
2、cially at the site where anterior cilliary blood vessels penetrate . The cause of scleritis is quite more and uneasy to determine. the cause of scleritisn Systemic infectious disorders:tuberculosis, leprosy, syphilis, sarcoidosisn Metabolic diseaseAutoimmune desmosis： rheumatoid arthritis,Wegeners g
3、ranuloma, SLEn Other causes：n injury or infection, direct spreading of in flammation of neighber tissuen Unclear causeCharacteristic of scleritisClinical characteristic of scleritis is pain,photophobia,tearing with long ill cause as well as repeated attacks.The sclera is easy to become thin after in
4、flammationscleral staphyloma may be formed.Treatment of non-steroid antibiltic or corticosteroid is needed for the case with obvious symptoms Classification of scleritisn episcleritis :nodular episcleritis periodic episcleritisn scleritis:anterior scleritisposterior scleritisnecrotizing scleritisnodular episcleritisperiodic episcleritisscleritistreatment of scleritisn Non-steroid antibioticn Corticosteroid n Atropinn Surgery
