Keratitis can worsen if you stay up late. Keratitis can range from mild to severe. In severe cases, it may lead to blindness, while mild cases can usually heal within about a week with active treatment. If keratitis is not actively treated, it can eventually lead to corneal clouding such as nebula, macula, and leukoma, which can severely affect vision. Additionally, improper treatment of keratitis may lead to corneal ulcers or perforations, severely impacting vision. Another issue is recurrent keratitis, which can cause neovascularization affecting vision. Therefore, keratitis should be treated actively upon onset, with careful attention, regular follow-ups, and monitoring of vision.