What are those little floaters on your eyes when you look at the sky?



To some people these "floaters" look like spots;to others,tiny threads.They are not on your eyes but in them.One cause of floaters is the hyaloid artery which carried blood to your eyes.When your eyes stopped growing,the artery withered and broke up.But since the pieces were sealed inside the eye,you'll see them floating around for the rest of your life.











当你眺望天空时眼睛中出现的小悬浮物是什么？

对有些人来讲，这些悬浮物像是圆点，而对另一些人则是细小的线状物。它们其实不在你的眼上而是在眼中。产生悬浮物的一个原因是由为眼输送血液的玻璃状动脉引起的。当你的眼球停止生长时，玻璃状动脉开始萎缩分裂。但是由于被封在眼内，你一生中便总会看到它们悬浮的影子。
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