How to Read Your Eyeglasses Prescription: Decode the Numbers and What They Mean
To read an eyeglasses prescription, identify OD for the right eye and OS for the left. The “Sphere” and “Cyl” values show diopters, which measure lens strength. A minus sign (-) indicates nearsightedness, while a plus sign (+) shows farsightedness. Knowing these details helps you choose the correct lenses for distance and near vision. Next, … Read more