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When you can have bleeding that oppresses on my optic nerve of that's an emergency that has to be treated right away one hundred. head of the procedure christophe let's get some local anesthetic. he feels the needle prick and his nervous. intensifies and you wonder if you've made the right decision. to be a fun virt removes the excess skin and some fatty tissue from both. during each step the bleeding has to be staunched so he has a good feeling. there's also a method available that involve. called oh fair of the procedure uses ultrasound in an attempt to tighten the loose skin and lift the ey...

Oppresses on the optic nerve of that's an emergency that has to be treated right away one hundred. head of the procedure kristoff let's get some local anaesthetic. he feels the needle prick and his nervous. fear intensifies and you wonder if you've made the right decision. to be as fun there removes the excess skin and some fatty tissue from both eyelids during each step the bleeding has to be staunched so he has a good feeling. there's also a method available that involve neither incision. called only fair repeat the procedure uses ultrasound in an attempt to tighten the loose skin and lift t...

My hands are shaking and my heart is beating faster. so what is actually going on in your body when you're scared. the optic nerve alerts the limbic system to danger the hypothalamus takes over the body reacts the older is sent to the edge in all glanced to produce a gentle ending cortisone or the heart speeds up the blood pressure rises more blood flows into the muscles hopes what erupts in a fraction of a second the choice is made to flee or fight our distant ancestors who were too bold were killed the too timid one says well we their descendants are a mix of lion tamers and scaredy cats but...

>> my son is in jail, charged with first degree murder. >> reporter: they listened to the awful story of the way john lost his eyesight. they explained to him the amazing things they were doing here like growing corneas in a petri dish and working on optic nerve regeneration. john took it all in, amazed. and for the first time, since the shooting, he felt a surge of positive excitement. and a little germ of hope lodged itself in his stubborn mind. >> reporter: you were thinking, maybe they can do it for you. >> i said i am in the right spot. >> reporter: he talked to the leading researcher wor...

By the visor, and open fired. all i really remember was one bang. keith morrison: the bullets destroyed his right eye, and severed the optic nerve in his left eye. the optic nerve connects the eye to the brain. without it, sight is impossible. but the bad news, of course, didn't end there. how did you find out about susan? at some point i asked melissa, how's mom doing? and melissa said, well, she's not doing quite as well as you. they're working on her somewhere else. so you need to hang in there. didn't really mean too much to me. i think i was hallucinating an awful lot. at some point, some...