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Strabismus (say "struh-BIZ-mus") is a vision problem in which both eyes do not look at the same point at the same time. Strabismus most often begins in early childhood. It is sometimes called crossed-eyes, walleye, or squint.
Normally, the muscles attached to each eye work together to move both eyes in the same direction at the same time. Strabismus occurs when the eye muscles don't work properly to control eye movement. When the eye muscles don't work as they should, the eyes may become misaligned and the brain may not be able to merge what one eye sees with what the other eye sees.
A child rarely outgrows strabismus after it has developed. Without treatment, strabismus can cause permanent vision problems. For example, if the child is not using one eye because it is misaligned, he or she can develop poor vision in that eye (called lazy eye or amblyopia).
Having strabismus can be hard on your child's self-esteem. It affects your child's appearance as well as his or her ability to see well. Other kids may tease your child for being cross-eyed or having a walleye. Be supportive of your child, and seek treatment right away.
Childhood strabismus often has no known cause, although it tends to run in families.
Sometimes strabismus develops when the eyes compensate for other vision problems, such as farsightedness or a cataract. Other things that can increase your child's risk for strabismus include an illness that affects the muscles and nerves, premature birth, Down syndrome, a head injury, and other problems.
Adults may develop strabismus from eye or blood vessel damage. Loss of vision, an eye tumor or a brain tumor, Graves' disease, stroke, and various muscle and nerve disorders can also cause strabismus in adults.
The most common signs are:
An older child may also complain about blurred vision, tired eyes, sensitivity to light, or double vision.
Symptoms may come and go. They may get worse when your child is tired or sick.
A newborn's eyes may be misaligned at first. But the eyes should become aligned by 3 to 4 months of age. In some cases, the eyes may simply seem to be misaligned because the child has a wide bridge of the nose that creates the appearance of crossed eyes. But if your child's eyes aren't aligned all of the time after age 4 months, take your child to the doctor for an eye exam.
A doctor can often tell that a child has strabismus just by looking at the child's eyes. It may be obvious that the eyes don't look in the same direction at the same time.
The doctor may have the child look at an object while covering and then uncovering each eye. This allows the doctor to see which eye turns, how much it turns, and under what circumstances the abnormal turn occurs. These tests will also help the doctor find out if the child has amblyopia (lazy eye), which sometimes occurs with strabismus.
Most experts suggest that children have an eye exam between the ages of 3 and 5, and earlier in some cases.1 But no child is too young for an eye exam. If you have concerns about your child's eyes or vision at any age, take him or her to an eye doctor.
The most common treatments for strabismus are:
Other treatments may include medicines and eye exercises.
Treatment for strabismus should begin as soon as possible. In general, the younger the child is when treatment begins, the better the chances are of correcting the problem.
It's also important for your child to get follow-up exams.
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Learning about strabismus:
|American Association for Pediatric Ophthalmology and Strabismus|
|P.O. Box 193832|
|San Francisco, CA 94119-3832|
The American Association for Pediatric Ophthalmology and Strabismus (AAPOS) provides information and encourages research on medical and surgical eye care for children and adults with strabismus and other eye problems.
|P.O. Box 429098|
|San Francisco, CA 94142|
EyeCare America is a public service program of the Foundation of the American Academy of Ophthalmology. This site aims to raise awareness about eye diseases and eye care. It has information about eye conditions, treatments, and general eye health. You can check to see if you qualify for a free eye exam.
|KidsHealth for Parents, Children, and Teens|
|Nemours Home Office|
|10140 Centurion Parkway|
|Jacksonville, FL 32256|
This website is sponsored by the Nemours Foundation. It has a wide range of information about children's health—from allergies and diseases to normal growth and development (birth to adolescence). This website offers separate areas for kids, teens, and parents, each providing age-appropriate information that the child or parent can understand. You can sign up to get weekly emails about your area of interest.
|Prevent Blindness America|
|211 West Wacker Drive|
|Chicago, IL 60606|
Prevent Blindness America assists the visually impaired and provides consumer information on vision problems and vision aids. Its website has information about eye health and safety for children and adults. Many states have local affiliates.
- U.S. Preventive Services Task Force (2011). Vision screening for children 1 to 5 years of age: U.S. Preventive Services Task Force recommendation statement. Rockville, MD: Agency for Healthcare Research and Quality. Available online: http://www.pediatrics.org/cgi/doi/10.1542/peds.2010-3177.
Other Works Consulted
- American Academy of Ophthalmology Pediatric Ophthalmology/Strabismus Panel (2012). Esotropia and exotropia. (Preferred Practice Pattern). San Francisco: American Academy of Ophthalmology. Also available online:
- American Academy of Ophthalmology Pediatric Ophthalmology/Strabismus Panel (2012). Pediatric eye evaluations. (Preferred Practice Pattern). San Francisco: American Academy of Ophthalmology. Also available online:
- American Optometric Association (2011). Care of the patient with strabismus: Esotropia and exotropia. Optometric Clinical Practice Guideline. Available online: http://www.aoa.org/x4813.xml.
- Enzenauer RW, et al. (2011). Strabismus. In CD Rudolph et al., eds., Rudolph's Pediatrics, 22nd ed., pp. 2293–2298. New York: McGraw-Hill.
- Motley WW, Asbury T (2011). Strabismus. In P Riordan-Eva, ET Cunningham, eds., Vaughan and Asbury's General Ophthalmology, 18th ed., pp. 238–258. New York: McGraw-Hill.
- Trobe JD (2006). Strabismus. In Physician's Guide to Eye Care, 3rd ed., pp. 137–139. San Francisco: American Academy of Ophthalmology.
|Primary Medical Reviewer||John Pope, MD - Pediatrics|
|Specialist Medical Reviewer||Christopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology|
|Last Revised||March 8, 2013|
Last Revised: March 8, 2013
Author: Healthwise Staff
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