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.
Answer by rosieposey78 (1304). Gestation time for head lice is 10 days from the point that a female lays the eggs and the nits hatch. An adult can live for up to 30 days on its host.If bedding and other items are not properly treated, eggs can hatch and a nit can reinfect a host. add a comment.nswer by mcmario2007 (786). The gestation time for head lice is approximately ten days and the best way to get rid of the lice is to use a proper shampoo meant to exterminate head lice. add a comment.