I'm pretty near-sighted, I have to wear contacts everyday just to see!
Me too! It is also known as myopia or short-sightedness. 
I always get them confused, myopia means you can see things up close and far away things are blurry, right?
Near-sightedness
Near-sightedness, also known as short-sightedness and myopia, is an eye disorder where light focuses in front of, instead of on, the retina. This causes distant objects to be blurry while close objects appear normal. Other symptoms may include headaches and eye strain. Severe near-sightedness is associated with an increased risk of retinal detachment, cataracts, and glaucoma.
The underlying cause is believed to be a combination of genetic and environmental factors. Risk factors include doing work that involves focusing
Many domestic horses (about a third) tend to have myopia (near-sightedness), with few being far-sighted. Wild horses, however, are usually far-sighted.
Visual capacity of the horse Accommodation.
Horses have relatively poor "accommodation" (change focus, done by changing the shape of the lens, to sharply see objects near and far), as they have weak ciliary muscles. However, this does not usually place them at a disadvantage, as accommodation is often used when focusing