"Bullitt" 5 month old Dominique cockerel
"Whitie" 5 month old Dominique pullet
First I would like to thank Backyardchickens (of course) and bambamsdad for allowing me to almost hijack his thread "Rooster with cloudy pupils", and everyone that posted replies.
Secondly and most importantly, if you have a chicken with cloudy pupils, do not assume that it has cataracts because it is very uncommon in chickens. Cloudy iris's could very well be Mareks disease. Cloudy pupils could be eye worms, the result of a scratch or foreign object, vitamin A or E deficiency, avian encephalomyelitis, or something else that I haven't heard of yet.
My wife and I have 14 Dominique chickens, 12 pullets and 2 cockerels all 5 months old. All have not been in contact with any other chickens or animals since we picked them up at the hatchery. There are no neighbors close by, and no other chickens within at least one mile. All were vaccinated for Mareks at the hatchery (which I found out is not 100% effective, thanks to a poster on bambamsdad thread). They were fed chick starter as per instructed by the feed manufacturer and then switched to layer feed, and over the last month get a hand full (or two) of cracked corn every couple of days. They are housed in a clean 10' X 12' shed with very good ventilation, have plenty of fenced in area to roam around in that is mostly shaded. All are healthy, active and act normal. There have not been chickens on the property before these.
Long story short, we took the two chickens pictured above to the veterinarian (of the four total with cloudy pupils) and after a thorough examination were told that they have cataracts (for more details see bambamsdad thread "Rooster with cloudy pupils"https://www.backyardchickens.com/t/784893/rooster-with-cloudy-pupils ).
I must also say that we were very disappointed with the reaction of the local hatchery as we went there before and after going to the vet. I was very polite and made it clear that I was there as a courtesy towards them because I felt that they might want this information about chicks that they sold, and was not looking for anything for myself (my thinking is that they might want to know how their chicks turned out if there is a potential problem with one of their egg suppliers). They have not contacted me back.
Now that I know what was wrong with four of our chickens I am hung up on the "why did it happen to my chickens" part.
I found this on the web (so it has to be true!) : http://www.ncbi.nlm.nih.gov/pubmed/8141748
It's about someone that had 200 Brahma chickens that had 15% of their pullets and 69% of their cockerels got cataracts by the age of six months, due to what they believed was hereditary defect. Our much smaller sample of 14 chickens had 25% pullets and 50% cockerels effected so this has me wondering if it may also be a hereditary defect. Hopefully the hatchery will look into this possibility so others don't have to deal with this, if it is in fact the cause, because I'm sure that there could be another explanation.
The veterinarian did tell us that their eyes produce a fluid that is released when the eyes are not dilated. Cataracts often keep the effected eye dilated so this fluid builds up and can cause bulging. This can become an obvious problem.
Anyway, there it is. Chickens can get cataracts. Please just remember that if you think this is what your chicken has to make sure it isn't everything else that it could possibly be because it could make matters worse.
Best of luck to everyone and their chickens!
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