Eye c-0.25 primarily means 25 degrees of myopic astigmatism. The c stands for columnar lenses and refers to the degree of astigmatism. (-) means myopic astigmatism, (+) means hyperopic astigmatism; astigmatism is mostly a problem caused by the curvature of the cornea, and can be categorized into regular astigmatism and irregular astigmatism. c-0.25 belongs to mild myopic astigmatism (less than 100 degrees of astigmatism, belonging to mild astigmatism, 100 to 200 degrees for moderate astigmatism, 200 to 300 degrees for severe astigmatism, more than 300 degrees for high astigmatism), generally does not affect vision, if it affects vision should be timely medical correction. Usually pay attention to eye habits, avoid often rubbing your eyes with your hands or lying down and playing with your cell phone and other bad behaviors.