Donning pairs of 3D shades, professors with Ogeechee Technical College sat in a darkened room this week to test drive their newest tool for teaching. Before making its debut in the classroom, one of three high-tech computers purchased by the college hummed on the conference center floor, projecting interactive and immersive three-dimensional images on the big-screen. Without using inordinate amounts of time, or getting the least bit messy, educators slowly picked apart a human eye, revealing its inner workings, down to individual nerves.