AMD is a condition where vision is lost in the macular, which is the part of the eye that controls central vision.

AMD是一种在黄斑中失去视力的病症，黄斑是眼睛控制中心视力的区域。

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But when we look directly at the mouth, our central vision doesn't see the shadows, and so the smile suddenly disappears.

但当我们直视她嘴巴的时候，我们的中心视力并不能看到该阴影，所以微笑就立刻消失了。

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New blood vessels sprout under the retina, leaking blood and fluid. The macula swells and becomes scarred, and central vision can be lost in weeks.

视网膜下血管增生，血液和液体渗漏，黄斑水肿结疤，中心视力在几周内消失。

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The ailment has significantly impaired Scheidies' central vision, and he sees mostly in blurs aside from some peripheral sight.

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With dry AMD, there is usually a gradual loss of central vision.

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It is the leading cause of severe vision loss in the over-50s in the developed world and affects central vision, needed for driving.

BBC: AMD is the leading cause of sight loss in the UK