Why does my vision get better when looking through a card with lots of holes in it?

[East Providence]

I got an injury in my eye and when I went to the hospital, I was asked to read the lettering chart with a a card with lots of holes in it .Then I found my eyesight is far bette looking through thesee holesr than without the holes, does anyone know why this may be?

[East Quincy]

Becasue the holes in the card force the light get back futher and focused to a point which makes it reach the back of your eye, just like how the eyeglasses work.

[East Quogue]

Just like pin hole glasses, when you look through the glasses with many holes in it, only a small amount of light can go into your eyes,so it forces your eyes get into focus and then make your eyes see things clearer.

[East Randolph]

I don't know how to explain it but you may have the similar experience.When you look at something through a small hole,you will see more clearly.I think they are the same theory.

[East Ridge]

I think it is just like how glasses work.The holes force the light to refract and reach the point in the back of your eyes where it should be.