We're joined by Ian Christensen MD and discuss the basics of eyes. What is an ophthalmologist vs an optometrist? Are ophthalmologists just eye dentists? What tools do ophthalmologists use? What is the process of Lasik? What are other laser eye surgeries? Why is wearing your contacts while you sleep bad? Is rubbing your eyes bad for them? What are floaters and flashers? Do we really see things upside down? What is blindness and are there any effective treatments for blindness? What can the layman do to protect their eyes?