astigmia

• 影响视力的医学状况，通常由角膜曲率异常引起，导致视物模糊；也指光学系统中类似的缺陷。

A medical condition affecting the eyesight, typically caused by an irregular curvature of the cornea, leading to blurred vision; also refers to a similar defect in optical systems.

不可数

1. Ophthalmological conditionB2formalmedical

   A visual impairment caused by an irregular curvature of the cornea or lens, leading to blurred or distorted vision.

   散光

   • The optometrist diagnosed her with astigmia during the eye exam.
   • People with astigmia often see lines as wavy or blurred.
   • Corrective lenses can effectively manage the symptoms of astigmia.

   同义词astigmatism

2. Optical defectC1formalscientific

   A flaw in an optical system where light rays from a single point do not converge at a single focal point, causing image distortion.

   光学缺陷

   • The telescope's design was adjusted to reduce astigmia.
   • Astigmia in the lens caused the image to appear stretched.
   • Engineers corrected the astigmia in the camera's optical system.

   同义词astigmatism