Sickly silkie

Hi everyone,
i'm new to this forum, and new to chicken keeping. I have a gorgeous black silkie hen, who has become far more than a chicken to me. The little love still doesn't lay, and she is a bit doopy, which makes her all the more adorable. Anyway, she has a bit of an iffy eye. It started about a week and a half ago, i noticed one of her eyes was often closed. recently she's been keeping it closed more and more, and when opened the eye looks very glazed. Im worried she may be blind in one eye? She doesn't seem in any distress, she still pecks about at all my veg (!!!!!) and saunters around the garden, so I don't think anything else is bothering her. Is there anything I can do to help? I've tried cold tea (as seen on another post) to no avail. Does anybody else have any suggestions?
Thanks for reading 
x

It's a sort of milky blue colour. I thought it could perhaps be a cateract? (although i'm a bit medically untrained, and not really sure).
Lc. x

Yes the other eye is normal. She has had a few issues, she had a little bit of a flap the other week, i thought i was going to lose her. But she pulled through. I took her out of the main coop because she was at the bottom of the pecking order, poor soul, and didn't seem able to cope. She was in with bantam pekins and a big hen. She stayed in the house for a few days to recover. She is out in her own coop at the moment which seems to have perked her up a bit. I am hoping to get another silkie to keep her company but not sure if it's a good idea now? maybe she is at a disadvantage because of her poorly eye?
Lc X

Thank you joyful for your replies, you've been very helpful. I have her booked in for thursday morning, and fingers crossed it isn't mareks. I will let you know how she gets on.
Lc. X

if you can get her booked into the vets tomorrow that would be better.

the eye is only one of the symptoms and is the ocular form of mareks but there is also the chronic and acute forms of mareks. Best let the vets see her eye as it could just be blindness caused by and infection.

sounds like it could be an eye ulcer.... and the pain  will make her want to keep her eye closed   If it were cataracts then generally I would think that the eye would be open..... dont know about mareks (thank goodness no experience of that)

Good luck for tomorrow