How To Buy Reading Glasses From Prescription «Genuine 2026»

Use this formula for each eye separately: .

If your prescription has Cylinder (CYL) and Axis numbers, copy them exactly; they do not change for reading glasses. 2. Adjust Your Pupillary Distance (PD) PD is the distance between your pupils in millimeters. how to buy reading glasses from prescription

To buy reading glasses using a prescription, you must use your distance and Addition (ADD) values to calculate the correct lens power . 1. Calculate Your Reading Power Use this formula for each eye separately:

If SPH is -2.00 and ADD is +2.25 , your reading power is +0.25 . copy them exactly

If SPH is +1.00 and ADD is +1.75 , your reading power is +2.75 .

Your eyes turn inward when reading, so your "Near PD" is typically 2-3 mm narrower than your "Distance PD".