My 7+ Month old ROR has had a persistent (apparent) infection (2+ weeks) of her nictitating membrane I'm pretty sure. Over these two weeks I have tried many different options suggested to me. First I gave oral "Terra Vet-10, flushed the eye with saline solution, put drops of penicillin in it (suggested by feed store), and administered drops of "Vetricyn" opthamalic. She began opening the upper and lower lids, and swelling was lessened a lot but the 3rd eyelid continued to be closed and yellow/white. Then a local (non-poultry seeing) Vet, gave me an opthamalic antibiotic salve which I treated her with for 3 days...but it didn't help at all. It was suggested that this was pus and should be removed. I tried but never really got anything but a minimal bit of mucus off her eye. Then, I was told by a local egg rancher to give her Tylan 50 orally in her water and to use a cotton ball to bathe the eye with more of the Tylan solution (after warm compressing it a few times to remove any pus). Energy level is much better and her eye is generally open but the membrane rarely moves nor opens (although we think we caught a brief half opening yesterday once!). It appears that there might be a little darker edge on the outside edge of the membrane. This is day 4 of this treatment. I'm pretty sure she probably has lost the vision in that eye (but maybe not!)...I have looked at the many diseases of the eye posted...none match up with my situation. She does not have any respiratory issues (but did have runny poop on day 1 and 2 but this resolved early on). I'm sort of at the end of my rope...don't know what to do at this point. Any other advice from some "seasoned" chicken people would be much appreciated. Thanks...Northern Nevada Vickery.