<iframe width="580" height="385" src="https://www.youtube.com/embed/fy7feY6KUIk?hl=en" frameborder="0" allowfullscreen></iframe> <br>Randy Kardon, M.D., Ph.D., Director, Iowa City VA Center for the Prevention and Treatment of Visual Loss, Pomerantz Family Chair in Ophthalmology, Professor ... <br><a href="https://www.youtube.com/watch?v=fy7feY6KUIk">source</a>