noun
astigmatism
Medical term for a refractive error where the eye does not focus light evenly onto the retina, causing blurred or distorted vision.
乱視のせいで、夜に車のライトがにじんで見える。
Because of my astigmatism, car headlights look blurry at night.
眼科で乱視と診断された。
I was diagnosed with astigmatism at the eye clinic.