The Corneal Research Group at Indiana University has been interested in examining the effects of different methods of reshaping corneas of nearsighted people. In particular, the group is interested in comparing the distortion of the cornea after radial keratotomy surgery (where incisions are made in the cornea in order to flatten it), and Ortho-K contact lenses, which are worn to reshape the cornea. Corneas were scanned from human subjects, and tests were done to determine the irregularities caused by each method, comparing the corneas to a best-fit sphere. Advanced Visual System's Application Visualization System (AVS) was used to allow researchers to interactively view best fits. Visualization is a method of computing that has emerged from the combination of the latest advances in visualization software, graphics, networking, high-performance systems, and industry standards. (For more information see Comparing Corneal Reshaping Methods.)