Bifocals are a kind of rite of passage for many of us. The nearsightedness requires glasses for driving or seeing the blackboard, but until later age, when the little parts of the eye begin to stiffen and resist change, there is usually no need for bifocals. There are the age defying lenses that hide this by a continual change in the lens, sliding gracefully from distance to close-up without that tell-tale line but they don’t work for everyone. So along come the bifocals and close behind a second pair with just the reading lens. Last week I picked up a … Continue reading →