LASIK eye surgery may be an option for you if you have nearsightedness (myopia), farsightedness (hyperopia) or astigmatism.
如果你有近视、远视、或者散光，LASIK眼科手术是种选择。
Sometimes astigmatism may develop following an eye injury or eye surgery.
有时，眼外伤或眼科手术也会带来散光。
The physical change of astigmatism in human eye is analyzed in this article. Different methods for astigmatism applied in clinic are expound and compared with advantages and disadvantages.
本文通过分析正常人眼散光的生理性变化规律，阐述了目前临床应用的散光治疗方法及优缺点比较。
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