What does a defect in the refractive power of the eye lead to?

Ametropia is a term used to describe any deviation from the normal refractive state of the eye, which can result in the need for corrective lenses. When the eye does not focus light precisely on the retina, it leads to various vision problems that fall under the umbrella of ametropia, such as myopia (nearsightedness), hyperopia (farsightedness), and astigmatism.

This condition arises due to a defect in the way the eye refracts light, which significantly impacts visual clarity and requires intervention for correction, typically through eyeglasses or contact lenses. Understanding ametropia is crucial for recognizing how refractive errors affect vision and the overall health of the eye. Other options, while related to vision problems, do not directly result from refractive power defects.