Chicken with eye injury, acting lethargic

[It_is_I_Rae]

I just discovered that one of my chickens' eye is injured. She was keeping it closed so I figured it was some minor irritation or something but when she opened it I found that instead of brown, it was a solid cloudy red color like it was filled with blood or something. I couldn't see the pupil. She also let me pick her up which she never does. Also there appears to be a scratch under her eye so maybe she poked it? Is it damaged forever? What can I do to help her?

 

[JacinLarkwell]

Pictures will help

 

[It_is_I_Rae]

She won't open it now but here it is. She's sitting hunched over and lethargic but I don't think I can keep her inside for an extended amount of time because I live with my parents and they don't like to have chickens in the house.