在同一条子午线上,或在同一条子午线的不同部位,屈光力量表现不同者,称为不规则散光。极轻度的各子午线上的屈光参差,被认为是生理性的。例如,晶状体的屈光率不正,其程度较轻,可无感觉。只有在屈光度加深时,如在初期白内障,可能发生不规则散光的症状,有时这种缺陷可以引起多视症。
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。
Major causes of limited visual acuity were central corneal scar and irregular astigmatism.
随着疾病的进展,光线进入眼中发生扭曲,也就是不规则散光。
As the disease continues to advance, the light rays entering the eye become significantly distorted, called irregular astigmatism.
圆锥角膜是一种先天性发育异常,是一种以角膜扩张为特征,致角膜中央部向前凸出、变薄呈圆锥并产生高度不规则散光的角膜病变。
Keratoconus is an uncommon autosomal recessive inheritance, characteristic of corneal ectasia, which results in the corneal central anterior bulging, conus formation and high irregular astigmatism.
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