They're the windows to the soul, the limpid pools in which we drown in each other's gaze -- all that good stuff. But it's the 21st century; haven't we figured out anything else the eyes are good for? You know, besides seeing?
I can think of at least several good reasons for not keeping your diabetes a secret. It is usually a good idea to let at least a few of your close friends and/or colleagues that you see on a regular basis know you have diabetes.