Astigmatism. When light enters a perfectly spherical lens like a basketball it refracts or bends evenly. Astigmatism usually is the result of irregularities in the radius of curvature of the cornea.
With astigmatism its shaped more like an American football. Your risk of developing astigmatism may be higher if you have any of the following. A variety of factors change the magnitude and shift the meridians of these cylindrical components and the perceived subjective astigmatism throughout life.
Namun sebenarnya astigmatism hanyalah bagaimana kemampuan mata dalam memfokuskan cahaya dan tidak dapat memberikan gambaran bayangan sebuah garis vertical dan horizontal dengan tepat.
People with astigmatism have blurry vision from both near and far distances. A perfect eye with no astigmatism has 0 diopters. Mild forms of astigmatism usually do not require correction. When the steepest curve runs vertically with the football lying on its side its called.
