Refractive Error Specialists in A F Rajokari, Delhi
Refractive error is a very common vision condition in which the shape of the eye prevents light from focusing precisely on the retina, resulting in blurred visi…
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Causes of Refractive Error
Refractive error arises from a mismatch between the length of the eyeball and the focusing power of the cornea and lens; an eyeball that is too long causes myopia, one that is too short causes hyperopia, and an irregularly shaped cornea causes astigmatism. Presbyopia occurs naturally with age as the lens loses its flexibility and ability to change shape for near focus. Genetics plays a strong role in most refractive errors, and excessive near-work or reduced outdoor time in childhood is linked to increased myopia risk.