Refractive Error Specialists in Karnataka

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.