 [ Symptoms ] how can i determine if my new glasses are causing my headaches [ Disease ] there are several things you can check with the glasses i wear glasses too when i do not have contact in  1 if you have astigmatism the lens needs to be correctly centered on your eyeball and if it is off you will feel off balance 2 if the difference between the right and left eye in terms of how strong the lens power is is high more than about 2 number units like 1 00 in one eye and 3 00 in the other you may feel off balance until you get used to the new glasses 3 if the power of your lenses is pretty high  or   2 50 or higher you will notice that things are distorted in your peripheral vision 4 if the nose piecesupport or the temple pieces that go over your ears are not adjusted just right for your face the glasses could give you a headache no ones face is perfectly symmetric and most people have one eye or ear slightly higher than the other i have had problems with both #2 and #3 above and several patients with problems from #1 and #4 as a cause for headaches bifocal lens have similar problems as #1 above