How many degrees is 0.6 uncorrected vision?

Uncorrected visual acuity 0.6, considering the presence of vision loss, the specific degree needs to be determined according to the specific type of refractive error present and the patient's optometry test results. The number of degrees and the degree of vision decline, is not completely proportional, for example, the patient has myopia and astigmatism, will be from the performance of distance vision decline, hyperopia, with age, early may show damage to myopia, to 40 years old, will also show distance vision decline.