I have a three-year-old hen who has gone totally blind in one eye, and is going blind in the other. Pictured below is the blind eye, and I am wondering why it is blue/white, and if there is any way I can prevent the other eye from going totally blind (the other eye has just a little bit of blue). The blue/white color is restricted entirely to the pupil and seems to be "inside" it, almost as if the pupil has been destroyed or taken over by something. Is there anything I can do? I don't know if she'll be able to function if she can't see.