![]() ![]() To focus both eyes on a single target, all 6 eye muscles on each eye must work together with the corresponding muscles of the opposite eye. Two muscles in each eye move the eye right or left while the other four muscles move it up or down and control tilting movements. Six eye muscles control eye movement and are attached to the outside of each eye. Potential causes include high farsightedness, thyroid eye disease, cataract, eye injuries, myasthenia gravis, cranial nerve palsies, and in some patients it may be caused by brain or birth problems. The causes of eye misalignment are various, and sometimes unknown. The symptoms described above may not necessarily mean that your child has strabismus however, if you observe one or more of these symptoms, contact your child's eye doctor for a complete exam. Adults with strabismus are not at risk of developing amblyopia because the connections between the eye and the brain are already formed and cannot be suppressed. ![]() Strabismus in adults often results in double vision because the brain has been trained to receive images from both eyes. Young patients with eye misalignment also typically have poor stereo or 3D vision and depth perception. Amblyopia is decreased vision in a perfectly healthy and well-formed eye which occurs because of a loss of the connection between an eye and the brain during a critical period of vision development from birth to 8 or 9 years of age. Therefore, abnormal eye alignment in childhood blocks normal binocular vision development (as the brain learns to rely on only one image from the fixing eye).Īlthough the avoidance of double vision is beneficial in some regard, this adaptation by the developing brain is also detrimental because the ignored eye loses the ability to see perfect “20/20” vision – a condition called amblyopia. Eye misalignment typically results in double vision in adults, but the developing brain in a child deals with the double vision by suppressing one of the images. On the other hand, if the eyes do not switch fixation (one eye is constantly the fixating eye and the other eye is constantly the misaligned eye), then the fixating eye is favored and almost always has better vision.Įsotropia and exotropia are common conditions among children. This alternation of deviating eye is often a good sign suggesting that the vision in each eye is equal. Often times the eye that is fixing on objects switches that is, the misaligned eye will fixate and the previously fixing eye will become the misaligned eye. When the eyes are misaligned, typically one eye will fixate on objects of interest while the other eye turns in (esotropia), out (exotropia), down (hypotropia), or up (hypertropia). This misalignment may be constant or intermittent. ![]() Strabismus is a visual disorder in which the eyes are misaligned and point in different directions. ![]()
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