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?
Yes that is correct. Distant objects would appear blurry and objects close up appear normal.
Ah, yes, I wasn't sure. I've always had myopia, it's awful.
Me too and is has caused me many headaches due to eye strain.
So, there's short-sightedness and far sightedness, but are there any other vision defects I should know about?
Refractive error
Refractive error, also known as refraction error, is a problem with focusing light accurately onto the retina due to the shape of the eye. The most common types of refractive error are near-sightedness, far-sightedness, astigmatism, and presbyopia. Near-sightedness results in far away objects being blurry, far-sightedness and presbyopia result in close objects being blurry, astigmatism causes objects to appear stretched out or blurry. Other symptoms may include double vision, headaches, and eye strain.
Near-
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