Your eyesight will go down.The cause may be astigmatism, which can be classified as mild astigmatism and severe astigmatism.If it is mild, vision is normal .However, if you look at objects at a certain distance for a long time, you may experience symptoms related to impaired vision.
Frequent eye strain. Astigmatism can easily causeeye strain and blur. General performance is eye ache, easy to shed tears, headache and so on. It will occur double images while seeing objects, and you can't work in close proximity for long time.