摘要
在美国有几百万人患有散光，它可导致视线模糊．这种症状源于角膜造型不佳（角膜在各个方向的弯曲度不一致）。角膜是眼睛上清澈透明的覆盖物，它可以使射入瞳孔的光聚集。“地球天空”与在英国加的夫大学领导角膜研究的凯斯·米克进行了对话。
Astigmatism, which can cause ,blurry vision, is a problem for millions, The condition stems from a misshapen cornea - the clear covering of the eye that focuses incoming light. EarthSky spoke to Keith Meek of Cardiff University in the U,K. who beads research on the cornea.
