Mouses that are good if you think you are getting Carpal Tunnel

[Ikonoclast]

Recently, I have noticed a pain in my right hand that I use with my mouse. The position in which I hold the mouse normally, seems to stress one of the tendons or something, I can't really play cards for a long period of time without it hurting, I have a Microsoft standard laser mouse (I don't know the brand name, i've had it for years).

Any Advice on Mice?