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來自眼睛的糖尿病信號

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來自眼睛的糖尿病信號

瞳孔變小

糖尿病導致植物神經損害,可影響瞳孔的舒縮功能。糖尿病人的瞳孔較正常人為小,而在眼底檢查時用擴瞳劑效果不佳,放大瞳孔的能力也較正常人差。


白內障

糖尿病人血中和眼內房水的葡萄糖水平均升高,眼內糖代謝受到障礙,形成一種稱為山梨醇的物質,積聚在晶體內,造成晶體纖維腫脹、混濁,形成白內障。


近視

糖尿病人體內大量的糖和鹽隨尿液排出,加上口渴多飲,血液滲透壓降低,房水的滲透壓也隨之下降,使晶狀體膨脹、變厚變凸,屈光度增加形成近視。

視力下降

糖尿病人視神經損害或眼底血管病變,使視網膜組織缺氧而形成微血管瘤或視網膜靜脈擴張、白斑、出血、動脈硬化,甚至發生視網膜剝離,造成視力下降。

  • This is a reposted article.
  • Keywords : 視力下降, 障礙, 近視, 變厚變凸, 舒縮功能, 能力, 糖尿病人, 積聚, 瞳孔變小, 瞳孔, 眼底檢查, 眼內糖代謝, 眼內房水, 白斑, 白內障, 物質, 滲透壓, 混濁, 正常人為小, 正常人差
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2012-12-06T09:51:00+0000


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