Nightly News | April 25, 2013
>>> finally tonight they say one kid in four in the u.s. has an undiagnosed eye problem. tonight's big idea , part of a new series of reports comes from a surgeon who thinks he has found a better way. his story tonight from diana alviar.
>> for the first five years of his life this was hunter vogel's world. he passed two standard eye exams but mom tiffany, a school nurse , was worried.
>> i knew something wasn't right.
>> reporter: then he attempted a new vision test . a different result.
>> he failed it all which was good. it was kind of an answer to, wait a minute, maybe he's not seeing.
>> reporter: not only could he not see clearly the test showed he had a serious degenerative eye disease .
>> what's more heartbreaking is to be told your child is fine over and over again but find out they have a problem and now they are too old to treat it.
>> reporter: he tecreated eye spy 2020 .
>> i never expected to hear kids say, "can i play it again."
>>> to kids it's a game.
>> we get to jump over an alligator with a rope.
>> reporter: a patch isolates the eye for an accurate exam and a pair of 3-d glasses tests depth perception in stereo vision .
>> looks like red, sometimes blue.
>> reporter: this nonprofit tested children like these in phoenix. identifying those whose vision problems might otherwise go untreated.
>> as soon as a child has been put into a pair of glasses, everything for that child changes. their behavior, their confidence, their self-esteem.
>> reporter: hunter's case goes beyond glasses. every day his mom patches his left eye to strengthen the right.
>> if i don't wear the patch every day, i might get blind. i don't want to get blind or i'll be sad.
>> reporter: his vision improved so much he can now play soccer. a bright future, one he sees clearly thanks to a simple game saving children's vision. nbc news, phoenix.