戴口罩眼鏡起霧怎麼辦?英國醫生一招輕鬆解決 | How to keep your eyeglasses from fogging up

武漢肺炎疫情延燒,民眾戴口罩保護,然而,戴口罩時眼鏡片卻容易起霧。|What can you do when spectacle lenses mist up while wearing a face mask?(NOWnews)
武漢肺炎疫情延燒,民眾戴口罩保護,然而,戴口罩時眼鏡片卻容易起霧。|What can you do when spectacle lenses mist up while wearing a face mask?(NOWnews)

【看英文中國郵報學英文】武漢肺炎疫情延燒,民眾戴口罩保護,然而,戴口罩時眼鏡片容易起霧怎麼辦?

Wearing glasses is already quite cumbersome, and if things couldn’t get any worse, your glasses may start to fog up and make seeing more challenging when wearing a face mask.

英國貝德福德醫院(Bedford Hospital)醫師Sheraz Shafi Malik和英國之心(HEFT)醫師Shahbaz Shafi Malik在《英國皇家外科醫學院年報》(Ann R Coll Surg Engl.)刊登的文章指出,用肥皂水改變水滴張力,可解決鏡片起霧問題。

In an article published on “Annals of The Royal College of Surgeons of England,” however, two doctors, Sheraz Shafi Malik and Shahbaz Shafi Malik, from Bedford Hospital and HEFT respectively, unveiled that soapy water could solve the problem of glasses fogging up. 

文內提到,戴上口罩前,先用肥皂水清洗鏡片,將殘留在鏡片上多餘水分甩乾,接著將鏡片自然風乾,或是用衛生紙輕擦鏡面。之後當戴著口罩時,眼鏡也不再起霧。

Before wearing your face mask, wash your spectacles with soapy water and shake off the excess water. Then, let the glasses air dry or wipe them with soft tissues. Your glasses shouldn’t be fogging up anymore, according to the article. 

至於為什麼戴口罩時眼鏡容易起霧,兩位醫師解釋道,戴口罩呼氣時會從口罩上方引到眼鏡,而呼氣中水分熱度較高,碰到較冷的鏡片時會凝結成小水滴,因表面張力凝聚在一起,而導致起霧的現象。

Why? The doctors said that a face mask directs much of the exhaled air upwards where it gets into contact with the lenses. Condensation occurs on glass lenses when water vapor — from your breath — gets into contact with on a cold surface, forming a film you see as fog. 

醫師寫道,肥皂水能夠破壞水分子的表面張力,讓水平均擴散,眼鏡就不會起霧了。

According to the article, soapy water reduces the surface tension so water would spread out evenly. As a result, your eyeglasses shouldn’t be fogging up when wearing a face mask.