need reliable glasses? One issue is that modern eyeglasses can be quite expensive.Wearing eyeglasses means a considerable cost during the whole life.This is actually magnified by the fact that prescription eyeglasses would function less well over time and a new pair with a higher power is needed.In this case, discount prescription glasses are quite needed.In a normal case, prescription eyeglass users have to replace their glasses every one or two years, either because of an old prescription or impaired lenses.