阿托品对眼的作用是A:散瞳、升高眼压、视近物不清B:散瞳、升高眼压、视远物不清C:缩瞳、降低眼压、视远物不清D:缩瞳、降低眼压、视近物不清...

作者: rantiku 人气: - 评论: 0

问题阿托品对眼的作用是

选项 A:散瞳、升高眼压、视近物不清 B:散瞳、升高眼压、视远物不清 C:缩瞳、降低眼压、视远物不清 D:缩瞳、降低眼压、视近物不清 E:散瞳、降低眼压、视近物不清

答案 A

解析阿托品为M受体阻断药，可阻断瞳孔括约肌的M胆碱受体，使环状肌松弛，而瞳孔开大肌保持原有张力，使其向外缘收缩，引起瞳孔散大。同时虹膜退向外缘，根部变厚，前房角间隙变小，房水不易进入静脉，眼内压升高。阻断睫状肌的M胆碱受体，使睫状肌松弛而退向外缘，致使悬韧带拉紧，晶状体变扁平，屈光度变小，视近物模糊而视远物清楚。故选A。

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阿托品对眼的作用是A:散瞳、升高眼压、视近物不清B:散瞳、升高眼压、视远物不清C:缩瞳、降低眼压、视远物不清D:缩瞳、降低眼压、视近物不清...

相关内容：阿托品,对眼,作用,散瞳,眼压,视远,缩瞳

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