I'm going to go fir a 30 km (25 mile) bike ride, and correct this later today (May 2, 2013).
I've been having several symptoms that create dizziness (when walking) and loss of detail and contrast visually. My white dog buddy disappears on a white sidewalk on a sunny day. So I've returned to cycling to try and strengthen my muscles and heart until some kind of specialist doctor can figure out the problem!
Thanks as always for dropping by,
and have a great part of the day,
wherever you may be.