Chicken has bubbles in eyes

[Platy04]

Today I noticed my hen was trying to eat a blueberry but couldn't pick it up. She couldn't coordinate where her beak was like she had trouble seeing or something. I noticed she had some bubbles in her eyes. I looked online and saw bubbles in eyes are a common symptom of respiratory disease but she isn't sneezing and doesn't have nasal discharge or any other symptoms. Could it be something else? What should I do to treat her?

 

[Eggcessive]

Foam in eyes can be a sign of mycoplasma gallisepticum or MG. It may be the only sign, or there may be other signs that may show up. You can try to get a PCR test performed for poultry mycoplasma or a PCR respiratory panel in chickens through your local vet, by contacting your state vet, or by contacting this company:
https://www.zoologix.com/avian/Datasheets/PoultryRespiratoryPanel.htm

Here is a link for contacting your state vet for testing:
http://www.metzerfarms.com/PoultryLabs.cfm