it seems like a new concept with cornea transplants? >> a lot of people have focused on the cultural resistance. what i find more interesting is the cultural acceptance and the extraordinary lengths people will go to in the hope that they will have restoration of function or restoration of appearance. i am much more struck by their willingness to try almost every -- almost anything in the hope of being made whole once again or having restored function. again, a lot of my work focuses on archives of medical schools, and so, i have seen hundreds of letters from americans who write in, say to a surgeon, and they -- and to me they are really tragic and poignant letters. they will say, i lost my foot in a street car accident. i would do anything to have my foot restored to me. they were not really doing limb transplants, but just the prospect that people were willing to be experimented on. many people have emphasized the resistance. what i find remarkable is the willingness to try something new in the hope of a better outcome. bill: so, this

it seems like a new concept with cornea transplants? matthew: a lot of people have focused on the cultural resistance. what i find more interesting is the cultural acceptance and the extraordinary lengths people will go to in the hope that they will have restoration of function or restoration of appearance. i am much more struck by their willingness to try almost every -- almost anything in the hope of being made whole once again or having restored function. again, a lot of my work focuses on archives of medical schools, and so, i have seen hundreds of letters from americans who write theyay to a surgeon, and -- and to me they are really tragic and poignant letters. they will say, i lost my foot in a street car accident. i would do anything to have my foot restored to me. they were not really doing limb transplants, but just the prospect that people were willing to be experimented on. many people have emphasized the resistance. what i find remarkable is the willingness to try something new in the hope of a better outcome. is something n

prk is photo refractive car it my a laser surgery that reshapes the cornea. starts with drops, and then , the outer most layer of the cornea is removed and laser adjusts the shape of the underlying tissue. it usually takes about 10 minutes per eye and typically results in 2020 vision. recovery time can vary from several days up to three months and there can be mild discomfort. eye irritation and watering right after the procedures. no word on carson's recovery. he sometimes wears glasses in post game press conferences and presumably contacts during the game. following prk he should be able to see on his own. he is now among a number of professional athletes to have laser vision correction. prk can correct near sighted ness, far sightedness and stigmaism, it is similar to lasix but corrects a different part of the cornea and slightly longer recovery period. now, prk vision correction is popular and considered to be very safe and effective. since we have not heard from carson we just don't necessity how his vision is doing but most people do very well and they

people are in the following proper hygiene when they wear their cast and that bacteria can form on our cornea causing pain and vision impairment. they suggest getting rid of your contact lenses all together and to have laser eye surgery to correct your vision instead. >> wash your hand before you are touching your eye. >> good advice there. >>> a lot of health insurance are start to go cover that because that can be expensive. >>> saying good bye to that egg. >> you know what we're talking about. >> twitter ditching its standard avatar, so, what is in its place. we have the answer. >> it cannot be generic person symbol, could it. >> yeah. giving people options based on their budget is pretty edgy... kind of like this look. i'm calling it the "name your price tool" phase. whatever. >>> a third person has died in , north philadelphia, jenny joyce is on the scene in the live report. >>> supreme showdown will democrats filibuster president trump's nomination for high court. will republicans be forced to go with what they call a nuclear option to get him through. >>> ♪ >>> legendary diana ross is

his pupil and his cornea are green, and this is not the first time he's been attacked in this specific. he was attacked with the same chemical back in march. this is the kind of thing that happens when you oppose vladimir putin. here's another example. this is a former journalist, kremlin critic, opposition party figure. two years ago he was poisoned. he very nearly died. he went into a coma. he suffered multiple organ failure. he barely survived but he survived and then it happened again in february. he was back in russia promoting a documentary on one of his colleagues another putin critic when he was gunned down, shot to death just outside red square. and suddenly he got ill, fell into a coma. doctors say he seemed to have ingested what was an unidentified toxic substance. he was in and out of a coma but again, he made it. he's now the vice chairman of the russian prodemocracy group which is called open russia and this weekend they have big protests planned. calling for people to take to the streets tomorrow to quote, express their dissatisfaction with putin's russia and not at all