Farsightedness

Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
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Farsightedness
Synonyms	Hyperopia, hypermetropia
Pronounce	N/A
Specialty	N/A
Symptoms	Blurry vision, eye strain, headaches
Complications	Amblyopia, strabismus
Onset	Often noticed in childhood
Duration	Lifelong
Types	N/A
Causes	Genetics, eye anatomy
Risks	Family history, age
Diagnosis	Eye examination
Differential diagnosis	Myopia, astigmatism, presbyopia
Prevention	None
Treatment	Eyeglasses, contact lenses, refractive surgery
Medication	N/A
Prognosis	N/A
Frequency	Common
Deaths	N/A

Farsightedness, also known as hyperopia, is a common type of refractive error where distant objects may be seen more clearly than objects that are near. However, people experience farsightedness differently. Some people may not notice any problems with their vision, especially when they are young. For people with significant farsightedness, vision can be blurry for objects at any distance, near or far.

Causes

Farsightedness is the result of the visual image being focused behind the retina rather than directly on it. It occurs when the eyeball is too short, which prevents incoming light from focusing directly on the retina. It can also be caused by an irregular shape of the cornea or lens.

Symptoms

Symptoms of farsightedness may include difficulty concentrating and maintaining a clear focus on near objects, eye strain, fatigue and/or headaches after close work, aching or burning eyes, irritability or nervousness after sustained concentration.

Diagnosis

A comprehensive eye examination by an optometrist or ophthalmologist can diagnose farsightedness. The exam will include tests to assess vision and the ability to focus and coordinate the eyes. The doctor will also check the overall health of the eyes.

Treatment

Farsightedness can be corrected with glasses or contact lenses to change the way light rays bend into the eyes. You may need to wear your glasses or contacts all the time or only when you need very clear, detailed vision. If you are mildly farsighted, your eyes may be able to compensate without the need for corrective lenses. In severe cases, laser surgery can be an option.

Prevention

There is no way to prevent farsightedness. However, regular eye exams can help detect farsightedness early.

Images

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  Cross-sectional view of the human eye
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  Choroid folds

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