he treated randall mccloy, the sole survivor of the sago mine disaster. dr. bales, coming up in the dark, because of what light might do to their eyes, how long will they have to keep glasses on? they haven't seen sunlight since august? >> i don't know if anybody knows for certain. i think fairly soon they will get reacclimated to the light as well as everything else about being home and up on the surface again. >> larry: what about pressure, temperature and the like. >> i think they have been in a hotter environment. i think the body is able to readjust to that fairly soon. i don't think that will be a major problem either. >> larry: your field is neurosurgery. is there any neurosurgical effect of this? >> hopefully not. hopefully not. i wouldn't imagine so. i think we look at the experience of the environment down below for the 68 days and we look at what may happen upon the ascent and the emergence back to life on the surface of the earth and i doubt they will have any problem that will need neurosurgical or neurological intensive care. >> larry: what abou