另外,日晒过度也会伤害角膜,例如,电焊工的电弧眼(arc eye)与滑雪者的 雪盲 ( snow blindness ),其原因就是未戴护目镜,造成眼角膜吸收过多紫外光,引起暂时性的发炎混浊.
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Visible light telescopes can resolve a piece of sky just a few arc seconds across — at least 60 times a smaller patch of sky than can be resolved with the human eye.
光学望远镜在数角秒内就能获取一张星空图—至少比肉眼能获取的大60倍。
Several arc echoes at the posterior segment of eye were detected in the silicon-oil-filling eyes with retinal detachment.
合并视网膜脱离的硅油填充眼可见眼后节多个弧形回声带。
Tips: stick to the end of the cloth is level, don't post into arc, open your eyes to pull carry eye end.
Tips：贴布的尾端要呈水平，不要贴成弧形，睁眼时就能拉提眼尾。
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