Whatever the cause, you should usually wipe away any eye discharge with a warm moist cloth and wash your hands frequently in case it is contagious. (verywellfamily.com)
If your cat's eye is bleeding, place a clean moist cloth over the eye and transport her to the vet right away. (cat-health-guide.org)
Avoidance of the allergens: Consistent housecleaning, vacuuming, and dusting can be helpful for house dust mite allergies, while pollen exposure can be reduced by using air - conditioning and air filters, avoiding the outside early morning and late afternoon, wiping your dog with moist cloths after going outside, and frequent bathing. (sandiegopethospital.net)