Help! Hen limping

[Wyorp Rock]

a couple of weeks ago with a limp, and we thought it was just a sprain because she is otherwise seeming healthy. But she isn’t getting better, her eyes are really red and I’m almost positive they were more brown before this and now the feathers on her face are turning white. She is still laying daily

We have been to a vet with her who said injury or merricks disease, but her eye color isn’t gray and she does still use the leg, it isn’t paralyzed. She is on Metacam as of 3 days ago.

The vet said it could be a sprain or merricks disease, but with the eye color not being gray and still having use of the leg, she doesn’t seemed convinced that’s what it is.

Has there been any improvement with the Metacam? Marek's does not cause pain. If it were an injury.. I would expect to see improvement with the metacam... smoother movement, etc.

Can you please post some photos of her and her eyes? You mention her eyes are red and her feathers are white?
What breed is she?

I agree, if it were sprain or injury, I would expect to see some type of improvement after 3 days on Metacam.

Sadly, Marek's is a good possibility.
You mentioned 2X that her eye is not gray. Read the links that @EggSighted4Life gave you, especially the Great Big Marek's article it is very good.
There are 4 Forms of Marek's.

Marek's is a virus and my understanding is extremely frustrating. Diagnosis is best made if you lose a bird or you cull and send for necropsy/testing. A good guess can be made with reporting of symptoms and observation, but to know - a necropsy is in order.

There are 4 Forms of Marek's - only 1 form affects the eyes. Just because you don't see gray eyes doesn't mean it's not Marek's. A bird may not be totally paralyzed - limping is far more a symptom of Marek's than paralysis. The neural form affects the legs - sciatic nerve. It can cause paralysis or just inflammation of the nerve which results in limping. Again, without necropsy and examination of the body - it's speculation.
https://extension.umd.edu/sites/extension.umd.edu/files/_docs/programs/poultry/FS-1007 Recognizing and Preventing Mareks Disease in Small Flocks.pdf

I would offer supportive care. Make sure she's eating/drinking well. Follow the instructions on medications given by your vet. Offer her some extra poultry vitamins that contain B2 once a week.

I'm sorry you're dealing with this.

 

[Realtorphillips]

Here is a photo to show her feathers and eyes, I guess I am unable to post a video of her walking.

 

[Realtorphillips]

 

[Realtorphillips]

 

[Wyorp Rock]

I don't see anything concerning about her eyes - are you talking about the actual color of the Iris? A Welsummer should have a reddish bay colored eye. She may have had a different coloring when hatched and younger - not sure what color, maybe a bit yellow, blue or green, but as they mature the eye color changes. This doesn't happen with every breed, but I have Barred Rocks that all had green or blue eyes when hatched and then gradually turned Bay.

The feathers on her head look to have keratin sheaths on them. Those will usually fall off when dust bathing, but you can start working on slowly ruffling them off, it won't hurt anything.