Third eyelid wont retract

[Nickiduck]

Greetings from sweden!
Me and my wife has got a pair of geese of an old swedish rural breed called "ölandsgås".

Beginning a few weeks ago the female has had some problems with her third eyelids which wont retract properly.

She had tendencies like this in her left eye when we got her (around may this year) but it seemed to sort itself out after a while. We then thought it was because of her growing. But then a few weeks ago it started coming back, and this time on both eyes. And now it has started impairing her vision.

She doesnt seem to be in pain, and shes eating and drinking as per usual. But its clear its not normal nor very comfortable.

Weve had two different vets look at her and neither found the source. Neither of them found any damage to the cornea or anything like that. And neither any signs of problems with her sinuses(?) or other respiratory issues.

Now in the winter they are getting a mix of whole seeds of different cereals (wheat, barley, oats, rye). And added carrots and pumpkins and the like more or less daily.

Right now our main vet is on holiday leave so were just trying to do all we can in the meantime..

Any ideas? Anyone seen it before? Any tips on what to search for?

See attaches photos.

 

[Goosebaby]

There could still be some sort of infection or irritant causing this, sometimes the exact cause is unknown but that looks like some sort of inflammation.
If it isn’t bacterial a virus could be to blame, according to a few sites online neoplasia can also cause this.

There isn’t a lot of veterinary information available online about problems with the nictitating membrane so there’s a likelihood your vet just doesn’t know what to look for which isn’t their fault, vets and owners alike are at the mercy of available or known information and the growing amount of ai websites are making finding legitimate useful information difficult.

Here’s one site that lists a number of cases involving various problems with the nictitating membrane.

https://escholarship.org/content/qt...7e591932210fc3f7e8833aebdfabf9e1.pdf?t=piq9pd

If she were my goose I would put her on a round of Tylosin, doxycycline, or both to see if the issue responds and the inflammation subsides because I would guess it was mycoplasma which I suspect is in my flock, mycoplasma is hard to test for and can sometimes affect individual birds differently.

If it’s nothing to do with any kind of infection maybe some sort of localized nervous system disorder? Honestly I’m grasping at straws because this is a very unusual case you have.