Keratitis is a condition that affects the eyes of cats, and it may become a chronic disease that will ultimately affect the pet's vision. The condition will manifest through excessive tearing and ocular discharges. Keratitis can be treated once detected.he condition can dry the cornea and for this reason, it is also known as 'dry eye.' The causes of keratitis are not precisely determined, but certain factors may be suspected: 1  The feline herpes virus. 2  A foreign object that reaches the cornea. 3  An eye injury.
Quick Answer. The incubation period for head lice is between 6 and 9 days, or roughly one week. After hatching, young lice (nymphs) become adults in about 7 days. These adult lice can live on a human head for up to 30 days. Continue Reading.
A few simple steps following Head Lice Treatment. There's no doubt that it's vitally important to remove every adult louse and nit on your child's head. Following are tips that can be followed at home to remove any live lice. Lice can survive up to 26 hours off the head. Lice eggs, or nits, do not hatch off the head except in extremely rare conditions.