Is this Mareks Disease?

[Adriannajonathan]

Brought some chicks into my flock, and they have been the unhealthiest little things. I’m attaching some pictures of their eyes. I might just think it was a respiratory infection, but I had a pullet from my existing flock randomly get a “broken leg” with no apparent injury. If it is mareks, what can I do???
I also have a vaccinated chick that acts like it has a broken foot, symptom??

 

[Mamatomany123]

If its mareks or a respiratory infection both will make your birds carriers for life. Not sure what may be going on. By "broken leg" do you mean actually broken or just paralyzed? Is there any discharge from the eyes, nose, or mouth? Wheezing, sneezing, cackled breathing?

 

[Adriannajonathan]

If its mareks or a respiratory infection both will make your birds carriers for life. Not sure what may be going on. By "broken leg" do you mean actually broken or just paralyzed? Is there any discharge from the eyes, nose, or mouth? Wheezing, sneezing, cackled breathing?

Well I honestly think it was paralyzed. I feel like it’s mareks, I’m just in denial. No discharge, but yes like a cough/sneeze sound.

 

[Eggcessive]

Can you give more details, such as exact age and possibly upload a video of the chick walking or limping to YouTube or Vimeo with a link posted here? Pictures of the legs from the front may also be good.