Summary: I have been battling carpal tunnel for years now. Forget any of the bad reviews from previous customers. If I could give a 6 stars to this, I would! Yes it takes a little getting used to, but who freakin cares if it solves the physical pain. You get all the features from a regular mouse (left click, right click, scroll). Trust me, it's worth buying this because for the price your pain will go away. I am so happy I want to cry. PS.
Summary: I bought this mouse about 3 years ago. I liked it so much that I bought another one for work. The construction quality is great, it feels solid. It's reliable and precise and of course, very comfortable. I use it 10 hours daily, 5 days a week. Contrary to my experience with other self-denominated "ergonomic" devices, this one have not created any discomfort after that much use. It's also Linux/OS X/Windows compatible. No drivers needed. I highly recommend it.
Summary: This is the best of all the wireless ergonomic mice out there. I know because I've had the wired one for years and it's great. This version is even better, addresses the only problem with the old one-the inconvenience of the cord.
Summary: I experiencied my first carpal tunnel pain from using a trackball mouse on photos. I had my hand/wrist in a brace. The joystick mouse is great! After 8 weeks my pain completely went away. I continue to use the mouse and I am very happy with it. I continue to be surprised by the accuracy.
Summary: This ergonomic mouse allows the hand to rest in a natural position, relieving the wrist and greatly reducing the need to use the index finger for clicking (which is one of the reasons I bought it). It is shaped a bit like a joy-stick, so that one uses the thumb for left- and right-clicking (the button is on the top of the "joy-stick"), while a button further down the handle allows for double-click and scrolling.
Summary: If you've got wrist or hand problems this mouse changes the ergonomics completely.
Fortunately my hand and wrist problems got better. I switched the left and right keys on the mouse and changed my position relative to where the mouse was located.
I used this mouse a few times and it works. If you need something ergonomically different from the traditional mouse, this is one pretty good choice.
Summary: My husband has Parkinson's disease. His tremors make using a normal mouse difficult. This one has worked very well for him. His previous mouse was also one like this model, except it was a roller ball. He used it for 12 years. This optical one is a nice upgrade that he was able to handle.
Summary: True, it does not have a scroll wheel. There are utilities you can download that will make the third button work as a scroll wheel. But it is best of breed for a few reasons. One, it allows your hand to assume the neutral "handshake" position. The natural position for your hand is the so-called "handshake" position, with the palm facing toward the other hand, and the knuckles positioned vertically.
Summary: I've had carpal for several years. A ergonomic keyboard helped some but my mouse arm was still a burning, numb, and worthless appendage about 2-3 times a month. I got this mouse after a colleague (also a Certified Professional Ergonomist) recommended it. It took a week or two to get used to the form, but it has been a big help. I still move to a traditional mouse for gaming but for work and day to day activities it is a blessing.