What happens to a person's sense of sight if his/her cornea is scratched?

This actually is a question that came out in my homework today. I've been trying to find an answer in the Internet but the answers aren't really precise. The real question goes like this:



Some dust particles entered the eyes of a motorcyclist. He rubbed his eyes so hard that he scratched his cornea. What will happen to his sense of sight? Give reasons for your answer.



I would appreciate it if someone could help me with this. Thanks :)What happens to a person's sense of sight if his/her cornea is scratched?
Actually I also have been searching the answer of this question. Internet didn't help at all.

round table pizza menu

what is android