1743, from Greek ptosis, literally "falling, a fall," also "the case of a noun," nominal derivative of piptein "to fall" (see symptom). In English, especially of the eyelid. Related: Ptotic.
双语例句
1. To determine the factors causing diplopia and ptosis after cataract extraction.
目的:探讨白内障术后复视及上睑下垂的机制.
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2. To sum up the etiology, manifestations, diagnosis and surgical techniques of ptosis.
总结上睑下垂的病因 、 临床表现 、 诊断及手术方法.
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3. Finally, the application of the anatomy in the ptosis surgery is discussed.
讨论了上述解剖在上睑下垂外科中的意义.
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4. Objective To introduce the aponeurotic ptosis and its surgical correcting efficacy.
目的介绍腱膜性上睑下垂及其手术矫正的疗效.
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5. No signs of iritis, ptosis, or ocular movement limits were found.
