For most patients, PRK will correct refractive errors so much, that they no longer require the use of their eyeglasses or contacts. However, the need for reading glasses occurs naturally in most people in their early 40’s whether they are nearsighted, farsighted, or normal. Laser vision correction can be calibrated to avoid reading glasses after 40 if one eye is kept slightly nearsighted – this is called Monovision LASIK.