A common term for myopia is nearsightedness. Nearsightedness, or myopia, occurs when light refracted by the lens does not reach the back of the retina. This causes objects in the distance to appear fuzzy or blurry. There are several reasons that light waves may fall short of the retina and cause myopia, which by itself is very common and easily corrected. When the shape of the eyeball is elongated, rather than round, however, myopia is pathological, or degenerative.