PC World recently profiled the work of the University of Washington's AIM Reserch Group in improving mouse control for users with disabilities.
The Pointing Magnifier makes clicking on an onscreen object faster and more accurate. The Angle Mouse adjusts the velocity of the cursor to manage the users' cursor positioning input even when they have trouble maintaining smooth hand movement.
PC World reviewer Mark Gibbs gave the AIM Research Group and their software a rating of 5 out of 5.
Read more here.
The AIM Research Group, led by iSchool Assistant Professor Jacob O. Wobbrock, is comprised of Ph.D. students in information science and computer science working to create effective and useful interactive technologies that improve people's access and interaction with computers and information, particularly for constrained users or users in constraining situations.