Abnormal sclera morphology Inflammatory abnormality of the eye Episcleritis 2010-12-20T05:48:22Z UMLS:C0014583 SNOMEDCT_US:815008 In contrast to conjunctivitis, with episcleritis the inflammation is generally limited to isolated parts of the sclera and is not diffuse.One can observe dilated episcleral blood vessels between regions of white sclera. Inflammation of the episclera, a thin layer of tissue covering the white part (sclera) of the eye. Inflammation of the thin layer on top of the white part of eye HP:0100534