My cat's eye wont open properly, and when it is open something looks to be covering it.

We've had our kittens for about a week now, one of them plays around perfectly fine but his brother (Champ) won't open his left eye properly, and when he does open it it looks like it's being covered by some skin, for want of a better word. Any idea what this could be? He's 2 months old.

Thanks everyone

EDIT: Just after posting this he threw up as well

if it looks like this, it is its 3rd eyelid

Yes! That's it, what do I do?

the fact that there is now also vomiting may mean that your kitten has gastroenteritis or parasites. i would take him to the vet.

The appearance of the third eyelid over the eye is often a sympton of illness. I would get him to a vet, asap as he is now vomiting too.