Chick Always Has Eyes Closed Like In Pain Need Help

[Alek]

For the past day I've noticed that when I go down to check on my chicks one of them has always had their eyes closed whenever I see them but they're still alive and though one of the chicks in there bullied one of my other chicks once I haven't seen it doing that to these two. I can't seem to visibly see what might be wrong with him/her and I even picked him/her to see if I could find something wrong but I couldn’t find anything. I'm also decently sure that the chick is not blind. Please help!

Other chicks seem alert and worried while this one doesn't seem to even notice I'm there.

 

[Dakota8472]

im my experience they dont close eyes because they are in pain. Its either tired or lethargic. is it opening its eyes when u pick it up? is it eating? drinking? walking?

 

[Alek]

im my experience they dont close eyes because they are in pain. Its either tired or lethargic. is it opening its eyes when u pick it up? is it eating? drinking? walking?

He doesn't really seem to be as active as the other two or as alert so maybe a little lethargic and when I picked it up it didn't really seem to care too much then i put it down away from the heatlamp to make sure it could walk it took a moment to decide it would run back to the heat lamp then it slipped though but got up and kept going. I also went down there this morning and it had its eyes open more but it closed them under the heat lamp so new theory is that maybe he/she has sensitive eyes or something because i only moved them in there a day and a half ago? Sorry that I typed so much.