Glasses online how to treat an optometrist testing data
In principle, detect much of refractive power, glasses should be used a lot of refractive power. This is the most basic principles can also be should eventually reach the refractive target.
This is also the case, however, with optometry refractive power is detected, with outglasses to be worn up and feel dizzy, but degree does not faint, this may occur either in myopia, with simple hyperopia, occurs element of astigmatism in ametropia. In such cases, you need to apply the correct amount.