Photophobia

Probably the only thing which i'm very scared of when I'm going to sleep, The lights. They scare the shit out of me maybe not scare it's just the feeling that i cannot sleep with them. I find myself sleeping comfortably when light are turned off and also with no sound. It made me wonder are everyone like this? well i got to find out that people does not care about light or sound they just sleep no matter how bright and noisy the place is. But I can't I don't understand why so I did some research on internet. I got to know that