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Etiology - The central cause of hyperopia (farsightedness) is a distortion in the shape of the eye where either the cornea is under-curved, the eyeball itself is too short (horizontally), or both. It's often hereditary and disproportionately affects children who aren't done growing.
Symptoms - Blurry up-close vision, eye/strain fatigue, squinting, and headaches.
Details - Hyperopia is especially common amongst young children, but is often mild and goes unnoticed since they outgrow it. The underdeveloped shape of the cornea/eyeball causes light to focus behind the retina, which then leads to cloudy, unclear vision of objects up-close.
Treatment - Hyperopia is most often treated with prescription glasses/contacts, reading glasses, and LASIK surgery.
Visual example of how light focuses in an eye with hyperopia vs without.
Photo Creds: Oftalvist
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