Learn About Amblyopia

What is the definition of Amblyopia?

Amblyopia is the loss of the ability to see clearly through one eye. It is also called "lazy eye." It is the most common cause of vision problems in children.

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What are the alternative names for Amblyopia?

Lazy eye; Vision loss - amblyopia

What are the causes of Amblyopia?

Amblyopia occurs when the nerve pathway from one eye to the brain does not develop during childhood. This problem develops because the abnormal eye sends the wrong image to the brain. This is the case in strabismus (crossed eyes). In other eye problems, the wrong image is sent to the brain.This confuses the brain, and the brain may learn to ignore the image from the weaker eye.

Strabismus is the most common cause of amblyopia. There is often a family history of this condition.

The term "lazy eye" refers to amblyopia, which often occurs along with strabismus. However, amblyopia can occur without strabismus. Also, people can have strabismus without amblyopia.

Other causes include:

  • Childhood cataracts
  • Farsightedness, nearsightedness, or astigmatism, especially if it is greater in one eye

In strabismus, the only problem with the eye itself is that it is pointed in the wrong direction. If poor vision is caused by a problem with the eyeball, such as cataracts, amblyopia will still need to be treated, even if the cataracts are removed. Amblyopia may not develop if both eyes have equally poor vision.

What are the symptoms of Amblyopia?

Symptoms of the condition include:

  • Eyes that turn in or out
  • Eyes that do not appear to work together
  • Inability to judge depth correctly
  • Poor vision in one eye
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What are the current treatments for Amblyopia?

The first step will be to correct any eye condition that is causing poor vision in the amblyopic eye (such as cataracts).

Children with a refractive error (nearsightedness, farsightedness, or astigmatism) will need glasses.

Next, a patch is placed on the normal eye. This forces the brain to recognize the image from the eye with amblyopia. Sometimes, drops are used to blur the vision of the normal eye instead of putting a patch on it. Newer techniques use computer technology, to show a slightly different image to each eye. Over time, the vision between the eyes becomes equalized.

Children whose vision will not fully recover, and those with only one good eye due to any disorder should wear glasses. These glasses should be shatter- and scratch-resistant.

Who are the top Amblyopia Local Doctors?
Highly rated in

McGill University

Montreal, QC, CA 

Robert Hess is in Montreal, Canada. Hess is rated as an Elite expert by MediFind in the treatment of Amblyopia. He is also highly rated in 4 other conditions, according to our data. His top areas of expertise are Amblyopia, Strabismus, Brown Syndrome, and Anton Syndrome.

Highly rated in

Erasmus University Medical Center

Rotterdam, ZH, NL 

Sjoukje Loudon is in Rotterdam, Netherlands. Loudon is rated as an Elite expert by MediFind in the treatment of Amblyopia. They are also highly rated in 16 other conditions, according to our data. Their top areas of expertise are Amblyopia, Papilledema, Strabismus, and Crouzon Syndrome.

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Highly rated in

Providence Health & Services

Alaska Children's Eye & Strabismus, LLC

3500 Latouche St 
Anchorage, AK 99508

Robert Arnold is an Ophthalmologist in Anchorage, Alaska. Dr. Arnold has been practicing medicine for over 38 years and is rated as an Elite doctor by MediFind in the treatment of Amblyopia. He is also highly rated in 7 other conditions, according to our data. His top areas of expertise are Strabismus, Amblyopia, Brown Syndrome, and Astigmatism. He is board certified in Ophthalmology and licensed to treat patients in Alaska. Dr. Arnold is currently accepting new patients.

What is the outlook (prognosis) for Amblyopia?

Children who get treated before age 5 almost always recover vision that is close to normal. However, they may continue to have problems with depth perception.

Permanent vision problems may result if treatment is delayed. Children treated after age 10 can expect vision to recover only partially.

What are the possible complications of Amblyopia?

Complications may include:

  • Eye muscle problems that may require several surgeries
  • Permanent vision loss in the affected eye
When should I contact a medical professional for Amblyopia?

Contact your health care provider or ophthalmologist if you suspect a vision problem in a young child.

How do I prevent Amblyopia?

Identifying and treating the problem early prevents children from having permanent visual loss. All children should have a complete eye exam at least once between ages 3 and 5.

Special methods are used to measure vision in a child who is too young to speak. Most eye care professionals can perform these techniques.

Visual acuity test
What are the latest Amblyopia Clinical Trials?
Binocular Amblyopia Treatment
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A Prospective, Multicenter, Randomized, Masked, Controlled Pivotal Trial to Assess the Safety and Effectiveness of an Eye-Tracking-Based Treatment for Amblyopia Under Binocular Conditions Versus the Standard of Care, Monocular Deprivation Treatment (Occlusive Patching)
What are the Latest Advances for Amblyopia?
Efficacy of vision therapy for unilateral refractive amblyopia in children aged 7-10 years.
Loss and enhancement of layer-selective signals in geniculostriate and corticotectal pathways of adult human amblyopia.
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Case Report: Anisometropic Astigmatism Secondary to Unilateral Coronal Synostosis.
Who are the sources who wrote this article ?

Published Date : August 18, 2020
Published By : Franklin W. Lusby, MD, ophthalmologist, Lusby Vision Institute, La Jolla, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

What are the references for this article ?

Ellis GS, Pritchard C. Amblyopia. In: Yanoff M, Duker JS, eds. Ophthalmology. 5th ed. Philadelphia, PA: Elsevier; 2019:chap 11.11.

Kraus CL, Culican SM. New advances in amblyopia therapy I: binocular therapies and pharmacologic augmentation. B J Ophthalmol. 2018;102(11):1492-1496. PMID: 29777043 pubmed.ncbi.nlm.nih.gov/29777043/.

Olitsky SE, Marsh JD. Disorders of vision. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 639.

Repka MX. Amblyopia: basics, questions, and practical management. In: Lambert SR, Lyons CJ, eds. Taylor & Hoyt's Pediatric Ophthalmology and Strabismus. 5th ed. Philadelphia, PA: Elsevier; 2017:chap 73.

Yen M-Y. Therapy for amblyopia: a newer perspective. Taiwan J Ophthalmol. 2017;7(2):59-61. PMID: 29018758 pubmed.ncbi.nlm.nih.gov/29018758/.