Some people find that drugstore reading glasses work well for them. However, you should see your eye doctor on a frequent basis for two reasons: Regular eye exams are the only method to detect “silent” disorders, such as glaucoma, in their early stages and treat them before permanent vision loss develops. One-size-fits-all reading glasses are ineffective for those with astigmatism, a different prescription in each eye, or eyes that are closer or further apart than “average.” Pre-made “readers” might induce eye strain and headaches in such circumstances.