I inherited my parents' eyesight - my mother was very short-sighted, my father was normal until middle age, when he started to get long-sighted. My left eye is my mother's, my right is my father's. This makes life very awkward as, now I am, er shall I say middle-aged, I need glasses to drive, different glasses for the computer and I read with just my left eye (saving the cost of a third pair). The two eyes can't focus together as they used to. I was persuaded into varifocals by an optician and I felt ill wearing them. Then another told me I shouldn't even try as my eyes would never cope with them. One contact lens has been suggested, but this would mean glasses for computer, glasses for reading and a spare pair for driving when not wearing the lens. I find two pairs of specs quite enough. Oh how I envy those with matching vision in both eyes.