Strabismus (Crossed Eye): Symptoms & Signs

  • Medical Author:
    Melissa Conrad Stöppler, MD

    Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.

Medically Reviewed on 4/18/2019

Strabismus is an eye condition in which the eyes don't move together to look toward an object. One of the eyes may appear to look in or out, or turn up, or down. This can occur continuously or only at certain times, such as during sickness or stress.

Signs and symptoms of strabismus include crossed eyes or misaligned eyes. If strabismus does not appear until later in life, it can cause double vision. Other associated symptoms can include decreases in depth perception, decreased peripheral vision, eye strain, and headaches.

Causes of strabismus

An inborn problem with the part of the nervous system that controls the movements of the eyes causes strabismus in children. Conditions, such as stroke, can cause the condition to arise suddenly in adults.


Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.

Medically Reviewed by a Doctor on 4/18/2019

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