1. The naked eye vision drops from 2.0 to below 0.8 to produce degrees! Therefore, it is naked eye vision that determines the health of vision!
2. The same two are children with 200-degree vision! Life doesn't need glasses! Another kind of life and study needs to wear glasses! The reason is that the naked eye vision is different!
3.500 degree myopia, naked eye vision is only 0. 1. After laser surgery, the naked eye vision was improved from 0. 1 to 1! The degree is still 500 degrees! But you don't need to wear glasses, which is determined by the naked eye! Not a degree!
4. Naked vision determines whether you wear glasses or not! And the degree is just to diagnose how many degrees you can see clearly!
Again: it is the naked eye that determines your vision! And the degree just means that the diopter has changed!