0.6 visual acuity can not be directly deduced from the number of degrees of refraction, because there is no balanced reciprocal relationship between the two, for example, for example, the same two 0.6 vision, after the standardized optometry, their degrees may be very different, it is also possible that the same 200 degrees of myopia to check the vision chart, the difference between the two people’s vision chart will also be very large, may be a difference of several lines, so that The two are not directly inferred from each other. If in a special case there is no instrument check, need to estimate the visual acuity or refraction, you can use the following rough method, the visual acuity table difference of one line, the difference in degrees between 25-50 degrees, 0.6-1.0 between the difference of three lines, so think about about 150 degrees, of course, this method is extremely inaccurate, and is not recommended.