摘要
眼瞼下垂（ptosis）依據發生時間分為先天性（congenital）及後天性（acquired）。依據原因則分為肌源性（myogenic）、腱膜性（aponeurotic）、神經性（neurogenic）、機械性（mechanical）及創傷性（traumatic）。臨床上需要完整的眼科檢查並仔細評估，若懷疑眼窩、神經血管或其它系統性疾病，血液及影像檢查有助於診斷及治療。矯正眼瞼下垂的手術方式根據嚴重程度、提眼瞼肌力量及其它個人因素而有所不同。
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