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乾眼症原來缺油不缺水?

不少乾眼症患者都有疑問:眼乾是否眼睛水分不足所致?事實上,淚水不足只是乾眼症其一病因。眼睛的淚膜有數層,當中最外層為油分,分泌自眼皮的油脂腺(學名瞼板腺),有助減緩淚水蒸發。研究顯示,約四至六成乾眼症患者的瞼板腺油脂分泌不足,可見只補充水分並不足以完全紓緩有關症狀。

乾眼症原來缺油不缺水?

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