Poor visual acuity is primarily caused by refractive errors. These
errors occur when the cornea is shaped in such a way that the images
we see do not focus directly on the retina.
Farsightedness (Hyperopia)
When you are farsighted or hyperopic, images that are near (the
words on a page, for example) appear to be more blurry than images
in the distance. Your eyes may be too short, or your cornea too
flat, so images focus behind the retina. |