During the period of keratitis, it is best not to smoke. Although smoking does not directly affect the factors of corneal healing, it can indirectly affect the healing of keratitis. If keratitis is not actively treated, or if the condition progresses or is not well controlled, it can easily lead to corneal opacity, spots, and leukoplakia. Additionally, it can lead to the formation of corneal ulcers and corneal perforation, causing severe visual impairment and even leading to blindness. Therefore, keratitis can be either mild or severe, and it should not be ignored in treatment. Active treatment and regular check-ups generally lead to recovery.