外眼係指結合膜及角膜而言。外胆異物多兒於工厂、礦山及工地等,由於工作之環境,性質而有不同,較易受傷者如石工、鐵工、機械工、研磨工、伐木工、泥水工等。 (一)結合膜異物:結合膜是連络眼瞼後面與眼球前面的粘膜稱為結合膜。 (1)原因——結合膜異物如塵砂、鐵屑、石片、炭末等常飛入眼內至結合膜囊后,因瞬目而 The outer ocular system refers to the conjugated membrane and the cornea. Foreign gall bladder is often found in factories, mines, and construction sites. Due to the nature of the work, the nature of the gallbladder is different, and those who are more likely to be injured are masonry, ironworkers, mechanics, grinders, lumberjacks, puddles, etc. (I) Conjunct membrane foreign body: The conjunctiva is the conjunctiva called the mucosa behind the eyelid and in front of the eyeball. (1) Cause—Combined with foreign matter such as dust sand, iron crumbs, stone flakes, and charcoal, etc., often fly into the eye to combine with the cyst, due to the blinking