Iodine and Blood Shot Eyes

[Guest guest]

Does/can excess iodine cause blood shot eyes?My partner has been doing a bit extra work recently, milking cows.   I had no idea that dairy cows were treated so badly - very, very badly, but that's obviously an O/T issue.     Although they don't clean the cows' udders before putting the milking machines on them they do spray down the dairy after milking with some horrible smelling chemical.    He has to wash really well every night and I wash his clothes separately.    He has only been milking two and a half weeks, but has developed swollen glands, a cold sore, and a blood shot eye.    He was told the blood shot eye would be from the iodine they use along with the chemicals to wash down the dairy but I don't think that sounds right.     I've asked him to give up the milking because of the chemicals used - apart from how distressing it is witnessing the cruelty to the animals - but I'm just curious about the blood shot eye and whether it could be due to iodine???