Originally Posted by big john

If your feet hurt you might need different shoes, or maybe they are too tight. Work on your spin so that you aren't mashing down all the time, try to pull up with your feet. Try to describe a circle as you spin the pedals. You may have to mash on the hills, but spin as much as you can.
If your knee hurts you may need to adjust the cleats or try something else. You can't force the knees to twist or turn in a way they don't naturally go. I use Kneesavers pedal extenders because I toe-out. I rode with clips and straps with flat shoes and based my cleat position on the marks on those shoes.
I use SPD pedals on all my bikes and my feet never hurt, even after climbing for hours. The shoes are the key, not the pedals. I've tried Look, Time, Shimano Look-type, and Mavic pedals. It's mostly about the shoes.

I get that eye problem with some glasses, but not if I use larger lenses, like Oakleys.