is totally blind and has been for the past way five years from incurable eye decay called retinitis pigmentosabut he's seen here with this wearable from los angeles-based back in sight. >> i see flashes of light and the brighter ones, like a door handle lord doorknob or a frame -- i can see that is what it is. >> this is how it works -- a camera on a pair of glasses transmits images to 60 tiny electrodes on the retina inside the eyeball. he cannot see fine features. but he did see his wife again this february as the world's 15th person with this prosthesis. today, another first -- today, he meets bob greenberg, the man behind his second site. bob also checks alan's vision. walking a white line on a black mat. >> i lost the line as i started walking. >> so what do people see? bob puts me in a simulator. >> this is a half moon. this is a triangle, this is a circle. >> outside the lab, allen keeps exploring. >> this week, disneyland, seeing mickey mouse, the enchanted castle, and this. technology -- wiring up eyes to the world for a chance at second site. emily: up next, what startup could be the

. >> yes, i was born with retinitis pigmentosa. >> hinojosa: and what was that like? i've read that your parents didn't really want you talking about the fact that you were blind. >> yes. you know, i think they didn't quite know what to make of it, you know? and there certainly was this fear that in society they would somehow get pitied or labeled in some way. you know, remember, i said we went to gurdwara friday night, saturday night, and all day sunday. they didn't want people to be staring at them. so i did spend a good portion of my childhood trying to, you know, not let people know. so i almost had two lives, where in the gurdwara you were always trying to hide it, and in school you were, of course, labeled as the one that had the special needs. >> hinojosa: what was that like for you, to know that, you know, this is who you are, and yet you weren't really being allowed to kind of choose how you dealt with the fact that you were blind? >> well, it was certainly difficult to pretend. i mean, it was certainly, at times, stressful. >> hinojosa: i can't even imagine