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正常視力時,光通過眼睛外表面的角膜,然後穿過瞳孔和晶狀體,聚焦在視網膜上。視網膜是位於眼睛後部的敏銳感光襯裡。 對於糖尿病患者,向視網膜提供養分的血管可能會受損。當視網膜的血管受損時,可能會洩漏、腫脹,或出現毛刷狀分支和延伸。這種損害會導致糖尿病性視網膜病變。 糖尿病性視網膜病變患者可能出現視力模糊、空白區域,或亮光時出現眩光。隨著病情發展,可能會出現雲霧狀景象、盲點和飛蚊症。飛蚊症是整個視野漂浮著小點。 如果不進行治療,糖尿病性視網膜病變可導致失明。糖尿病患者定期做眼科檢查是很重要的。
Duration: 01:05
Published: 3/9/2017
Blausen Medical
Scientific and Medical Animations
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