Hi, I purchased online a pair of non-prescription safety spectacles +2.5 magnification. When trying them on for the first time I almost immediately suffered with mild vertigo. I am mid 70s man with reasonable good long vision but need prescription lenses to read, I am aware my left eye needs more ?? magnification than my right. I occasionally but infrequently suffer with mild vertigo. BTW the new magnifying specs gave me slightly clearer site than my present reading specs. I welcome your thoughts..is it reasonable to accept my vertigo was as a result of trying the new spectacles, or a coincidence AND yes when time and circumstances permits and this low bout of vertigo is finished I will try the spectacles again to test any theory. Regards Richard