The optical power of the lenses in the glasses is 2 diopters, these glasses: Correct farsightedness or myopia?

There is a formula that will allow you to find out the focal length: F = 1 / D = 1/2 = 0.5 (m) = 50 (cm) From a medical point of view, there are two options for focal length. 1) People with myopia will be comfortable looking up to 25 cm. Therefore, they are forced to bring the text close to their eyes 2) People who “suffer” from farsightedness will see blurry at such distances, their eyes will simply not be able to focus. A comfortable distance for them is from 25 cm. Such people can distinguish small letters up to meters.