Yes, it could cause that if it is untreated or not treated well. Corneal ulcer is a serious eye disorder that caused by harmful microorganism, like bacteria, virus. As we all known, the eyelid and tears can prevent harmful foreign objects to enter the eye, however, bacteria, virus and other invisible objects are able to enter the cornea if there is any abrasion. The symptoms of corneal ulcer are quite obvious because of the sensitive cornea. It would make your eyes become red, blurred, burning, itching, tearing and increased of eye discharge. It is a serious eye condition that has to be treated promptly and properly. Otherwise, it could cause vision loss and blindness finally.