They have what is called astigmatism. 他们有所谓散光(ASTIGM)。
Under astigmatism even narrow parallel light beams will not combine into one point. 有像散存在时甚至很窄的平行光束都不能会聚在一点。
To study effect of3 kinds of Incisions on early astigmatism after cataract surgery. 目的研究3种白内障手术切口对术后早期散光(ASTIGM)的影响。
The procedure effectively corrects nearsightedness, farsightedness, and astigmatism. 有效地矫正近视、远视和散光(ASTIGM)。
Major causes of limited visual acuity were central corneal scar and irregular astigmatism. 影响视力恢复的主要原因是角膜中央区瘢痕和角膜不规则散光(ASTIGM)。至于手术后视力不佳最主要的原因为视神经和角膜的损害。