Complex sentence: Kantis is responsible for having tracked down Dr. Morris Waxler, former FDA official in charge of approving laser vision correction devices, and introduced him to the entire post-Lasik injured patient community and collaborated about all of their post-Lasik complications.
Split into simpler sentences: Kantis is responsible for having tracked down Dr. Morris Waxler, former FDA official in charge of approving laser vision correction devices. He introduced him to the entire post-Lasik injured patient community and collaborated with Waxler concerning all of their post-Lasik complications.