0.4 How much is myopia?

0.4 Vision is usually 200-300 degrees of myopia, may be more than 300 degrees of myopia.

0.4 vision is the result of the examination of the eye chart, and computer optometry does not exist conversion relationship, so can only be a rough estimate. If the human eye compensation ability is relatively weak, the degree of myopia may be between 200-300 degrees; if the human eye compensation ability is relatively strong, myopia may be more than 300 degrees.

If the patient wants to know the accurate degree of myopia, can go to the regular hospital ophthalmology for mydriatic optometry examination, can be diagnosed. If myopia, can be corrected by wearing glasses, orthokeratology and other methods.