Whether a little scarring in keratitis will cause blindness depends on the extent and level of the scarring, which can lead to vision loss in mild cases and may cause blindness in severe cases. Keratitis with a little scarring may cause blindness, the cornea is part of the refractive medium, responsible for most of the refractive function of the eye, keratitis will affect the epithelial layer and stromal layer of the cornea, scarring can cause varying degrees of vision loss in mild cases, and even lead to blindness in severe cases. After a little scarring, keratitis can be treated with dexamethasone eye drops, erythromycin ophthalmic ointment and other medications as prescribed by the doctor at the initial stage, and can generally return to normal. If the keratitis goes deeper into the stroma or endothelial layer, localized scars such as corneal white spots may occur, which may have irreversible effects on vision and even lead to blindness, which can be treated with corneal transplantation. Keratitis with a little scarring, to the hospital in a timely manner, as prescribed by the doctor for standardized treatment.