Turn Your Prescription into Reading Glasses: A Guide to Clearer Vision
To turn an eyeglass prescription into reading glasses, add the ADD (Add power) to the SPH (Sphere) value. For instance, if your SPH is -1.75 and ADD is +2.25, the new SPH becomes -1.75 + 2.25, which equals +0.50. This new value is the prescription for your reading glasses. Next, select the right frames that … Read more