Определение astigmat в Турецкий язык Английский Язык словарь
astigmatism: defect in the eye or in a lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focus
(astigmatism: ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people