Hen with sore eye - Please Help!

I found my cochin hen with a swollen Eye, so i bathed it in dulited dettol. Today its not swollen, but it is watery. looks like bubbles of water in the corner. also noticed some of my other hens are the same, minus swollen eye. Please help. i am unsure what it is. Did take a pic, but pc is having a paddy


thanks

Rosie