What is near and far sightedness? Myopia vs Hyperopia
Near sightedness, also called myopia, is when you can see objects up close, but objects far away appear blurry.
Far sightedness, also called hyperopia is when you can see objects far away but objects up close appear blurry.
Both of these problems with vision can be corrected with concave or convex lenses.
For more Life Science videos and summaries see,
http://www.moomoomath.com/Middle-School-Science-and-Biology.html