Blind Izuku

Overview
Mainly this concept stays with the same storyline, but, he is blind, so it affects the timeline anyhow. Though there are other ways that being blind can cause problems in the storyline.

How does he become blind?
There is a variety of stories that each have different reasons for how this occurred.

~The sludge villain attack did something

~ 'Kacchan' did something

~ or he was simply born with it.

But what comes as a result of his blindness is a quirk.

The Quirk that helps with his blindness
In fanfiction, Deku is useless and cannot see, at this time he is usually still quirkless. But they give him a quirk, usually after he has begun doing some kind of training. So since he is blind, most of the time his quirk helps with his sight. But it comes often after he receives a resolve that helps him train which is when he is gifted a quirk.

His altered reality
now in this world, they stick to canon most of the time, he does meet All Might and goes to yuuei.