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Episcleritis is a benign, self-limiting inflammatory disease affecting part of the eye called the episclera. The episclera is a thin layer of tissue that lies between the conjunctiva and the connective tissue layer that forms the white of the eye (sclera). Episcleritis is a common condition, and is characterized by the abrupt onset of mild eye pain and redness. There are two types of episcleritis, one where the episclera is diffusely affected (diffuse episcleritis), and the other where nodules are present in the episclera (nodular episcleritis). Most cases have no identifiable cause, although a small fraction of cases are associated with various systemic diseases. Often people with episcleritis experience it recurrently. Treatment focuses on decreasing discomfort, and includes lubricating eye drops. More severe cases may be treated with topical corticosteroids or oral anti-inflammatory medications (NSAIDs). == Signs and symptoms == Symptoms of episcleritis include mild eye pain, redness, and watery eyes. The pain of episcleritis is typically mild, less severe than in scleritis, and may be tender to palpation. There are two types of episcleritis: the diffuse type, where the redness involves the entire episclera, and the nodular type, where the redness appears more nodular, involving only a small, well-circumscribed area (sectoral).〔 The diffuse type of episcleritis may be less painful than the nodular type. Sometimes, small nodules are present within the episclera, which move slightly over the sclera with gentle pressure.〔 Discharge is absent with episcleritis, and vision is unaffected. Patients with episcleritis experience far less photophobia than patients with uveitis.〔 Episcleritis does not cause the presence of cells or flare in the anterior chamber of the eye.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「episcleritis」の詳細全文を読む スポンサード リンク
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