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Hyperopia

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Overview


Plain-Language Overview

Hyperopia, commonly known as farsightedness, is a condition affecting the eyes where distant objects are seen more clearly than close ones. It occurs when the eye is too short or the cornea has too little curvature, causing light to focus behind the retina instead of directly on it. This leads to difficulty focusing on nearby objects, resulting in blurred near vision. The condition involves the visual system and can affect daily activities like reading or using a smartphone. People with hyperopia may experience eye strain or headaches due to the extra effort needed to focus. It is a common refractive error that can be corrected with glasses, contact lenses, or surgery.

Clinical Definition

Hyperopia is a refractive error characterized by the focusing of light behind the retina due to an abnormally short axial length of the eye or insufficient corneal curvature. This results in impaired accommodation for near objects, causing blurred near vision while distant vision may remain clear. The condition arises from a mismatch between the eye's optical power and its axial length, leading to a refractive mismatch. It is clinically significant because it can cause accommodative strain, asthenopia, and in severe cases, amblyopia in children. Diagnosis involves assessment of visual acuity and refraction. It is important to distinguish hyperopia from other refractive errors such as myopia and astigmatism.

Clinical Presentation


Diagnostic Workup


Pathophysiology


Treatments


Prevention


Outcome & Complications


Differential Diagnoses