Optical astigmatism line level

What is the optical astigmatism line level?
What is astigmatism line level? Due to the irregular curvature of the cornea in patients with astigmatism, there may be abnormal refraction. Line position refers to the position of refraction. Simply speaking, it describes the position of astigmatism. It does not represent the depth of the degree. If you want to wear contact lenses comfortably and see clearly, you should not only pay attention to the power of the glasses, but also pay attention to the line position and power of the astigmatism Con , both of which are closely... Read more...