The cornea
because you are irritating the eye
you probably irritated it somehow. if you hit your head in that area, or you play with your eyelashes, you probably irritated it. to stop symptoms, take care not the mess with them. don't even put on mascara for a few weeks. this should help. :)
Rubbing your eyes with dirty hands could allow some sort of foreign object to get into your eye and irritate it. Also, you might introduce germs or the like, and this might result in an eye infection. We are usually cautioned about rubbing our eyes as its something to generally avoid. But rubbing your eyes with dirty hands is something that warrants special attention so it can always be avoided because of the risks.
Stop wearing the contacts immediately and go back to the optician for a check up. If the redness does not improve quickly when you stop the contacts you may also need to go and see your doctor for treatment.
Depends on the extent of the scratch, the ferrets eye will be watering and irritated
There are a number of reasons why a dog would have brown in the white part of their eye. They might have a parasite.
eye
It sounds like you may have a eye infection if its that red it might be something having been irritated pink eye if it has drainage if it was poked it could be drainage caused from infection it this is to bad now i would be real careful and maybe see the doctor cause you never know.
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It sounds like your poor dog might have an eye infection. Please get your dog to a vet as soon as possible.
To get a red eye is something that nobody wants. However certain amount of bacteria has to get in the eye to become irritated, itchy, swollen and red. This can lead to pink eye or conjunctivitis, a disease in the eye that is extremely contagious. But people who dont sanitize their hands for example, touch their eyes and later get symptons and the disease as well. Medication such as eyedrops might get rid of it.