These are the four most typical eyesight problems that tend to require prescription glasses:
Nearsightedness: also called myopia, this focusing disorder (not considered an eye disease) refers to the ability to clearly see objects that are nearby, but the difficulty to focus on objects that are far away. Myopia is a refractive error that happens when our eyes can’t bend (refract) the light properly.
Farsightedness: also referred to as hyperopia, this condition has the opposite effect to myopia. Distant objects appear very clear, but close objects become blurry.
Astigmatism: when our eyes suffer from astigmatism it means that they are not capable of evenly distributing the light across our retina. The result is that images can appear stretched out and blurry. This condition is due to an imperfection in the curvatures of the cornea.
Presbyopia: this eye condition tends to appear with age, as our eyes gradually start to lose the ability to focus properly. It typically appears after we turn 40, and it manifests in the need to read with more distance in order to have clearer vision.