Have you added any new birds recently that might have been a carrier for mycoplasma or coryza, both respiratory diseases? No, but she has just started free-ranging for limited times each day, and my one-year old hens are out as well, but none of them have ever had this problem. She has showed some eye problems in the past, but nothing serious. Has she been pecked or stung around the eyes? Not that I know of. Do you see foam or bubbles in either eye? No, they are both very clear. Dust, mold, and ammonia odors can be irritating to eyes. If there is foamy eyes, nasal drainage, sneezing, or other respiratory signs, you may want to start some Tylan or Oxytetracycline in her water. Tylan 50 injectable can also be given orally twice a day for 5 days. I can give you dosage if you know her weight. Would you suggest me giving it to her without the symptoms listed?