hyperopia
Sign in to saveFar-sightedness, also known as long-sightedness, hypermetropia, and hyperopia, is a condition of the eye where distant objects are seen clearly but near objects appear blurred. This blur is due to incoming light being focused behind, instead of on, the retina due to insufficient accommodation by the lens. Minor hypermetropia in young patients is usually corrected by their accommodation, without any defects in vision. But, due to this accommodative effort for distant vision, people may complain of eye strain during prolonged reading. If the hypermetropia is high, there will be defective vision
AI overview
Hyperopia, commonly called far-sightedness, is a condition where your eyes focus light behind the retina instead of directly on it, making nearby objects appear blurred while distant ones stay clear. It matters because while mild cases may go unnoticed due to your eye's natural focusing ability, severe hyperopia causes blurred vision and eye strain during close-up activities like reading.
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Key facts
- Medical condition (new).name
- Hyperopia
- Medical condition (new).synonyms
- Hypermetropia, hyperopia, longsightedness, long-sightedness
- Medical condition (new).image
- Hypermetropia color.svg
- Medical condition (new).caption
- Far-sightedness without (top) and with lens correction (bottom)
- Medical condition (new).field
- Ophthalmology, optometry
- Medical condition (new).symptoms
- Near blur, Distance and near blur, Asthenopia
- Medical condition (new).complications
- Accommodative dysfunction, binocular dysfunction, amblyopia, strabismus
- Medical condition (new).causes
- Axial length of eyeball is too short, lens or cornea is flatter than normal, aphakia
- Medical condition (new).risks
- Ageing, hereditary
- Medical condition (new).diagnosis
- Eye exam
- Medical condition (new).differential
Article
14 sectionsContents
- Signs and symptoms
- Complications
- Causes
- Diagnosis
- Classification
- Clinical classification
- Classification according to severity
- Components of hypermetropia
- Treatment
- Corrective lenses
- Surgery
- Etymology
- References
- External links
Far-sightedness, also known as long-sightedness, hypermetropia, and hyperopia, is a condition of the eye where distant objects are seen clearly but near objects appear blurred. This blur is due to incoming light being focused behind, instead of on, the retina due to insufficient accommodation by the lens. Minor hypermetropia in young patients is usually corrected by their accommodation, without any defects in vision. But, due to this accommodative effort for distant vision, people may complain of eye strain during prolonged reading. If the hypermetropia is high, there will be defective vision for both distance and near. People may also experience accommodative dysfunction, binocular dysfunction, amblyopia, and strabismus. Newborns are almost invariably hypermetropic, but it gradually decreases as the newborn gets older.
There are many causes for this condition. It may occur when the axial length of eyeball is too short or if the lens or cornea is flatter than normal. Changes in refractive index of lens, alterations in position of the lens or absence of lens are the other main causes. Risk factors include a family history of the condition, diabetes, certain medications, and tumors around the eye. It is a type of refractive error. Diagnosis is based on an eye exam.