Corneal scratches can affect vision because the cornea is refractive, light passes through the cornea before it can enter the eye, so corneal scratches will definitely affect vision. Cornea is the transparent part of the outer front of the eye wall, the integrity of the cornea for the integrity of the eye itself has an important role; cornea is mainly composed of non-vascular connective tissue, the front of the slightly protruding, curved like a sphere, there is a refractive effect, the light through the cornea before you can enter the eye, so corneal scratches will certainly affect the vision. Corneal scratches can recover on their own if the wound is superficial, usually 1 to 7 days to return to normal, if the scratch is deeper you need to use anti-inflammatory to prevent infection and promote corneal repair of the eye drops, such as levofloxacin eye drops and other treatments, the more serious need to be surgically sutured treatment. If the cornea is scratched, it is important to seek medical treatment in a timely manner to minimize the adverse effects of the disease through “early detection, early diagnosis and early treatment”.