With nearsightedness, your eye is usually elongated, with too much distance between the cornea at the front of your eye and the retina at the back of your eye. If you’re nearsighted, you can see objects that are close clearly, but objects that are farther away will look blurry. Nearsightedness, or myopia, is a common refractive disorder. What to know about nearsighted prescriptions SPH means sphere, or the power of the lens that will correct your eyesight.It indicates the amount of prismatic power your glasses need to correct for differences in the alignment of your eyes. Prism is used if you have double vision.Binocular PD is the distance from one of your pupils to the other pupil. ![]() Monocular PD is the distance from your pupil to the middle of your nose. OS is oculus sinister, or your left eye.OU stands for oculus uterque, or both eyes.OD means oculus dexter, or your right eye.NV stands for near vision, or the amount of power that needs to be added to make reading easier.This number indicates whether you have nearsightedness or farsightedness. DV is an abbreviation for distance vision.The cylinder and axis together help correct astigmatism. ![]()
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