Topics: Eye, Annulus of Zinn, Lateral rectus muscle Pages: 2 (631 words) Published: December 7, 2012
According to North Bay Eye Associates there are 4% of all children in the United States have strabismus. It occurs equally in males and females. Strabismus or crossed eye can be described as the condition where the eyes unable to corporate when the person are trying to focus on something. Someone can be categorized as a cross eye’s patient is when their eyes moves in different way and look at the cross point. It occurs when an eye turns in, out, up or down and is usually caused by poor eye muscle control or a high amount of farsightedness. There are four causes of strabismus which are muscle imbalance, farsighted, thyroid disease, and also amblyopia. The first factor that causes Strabismus is eye muscle imbalance. Eye muscle imbalance can be happened when there is imbalance in the six extraocular muscles of the eye to work out properly that causes a horizontal or vertical misalignment. It makes the eyes stops at the same time focusing on one object, so two conflicting images are sent to the brain at the same time. In normal situation, our both eyes focus on the same object and transmit only one image to the brain (Yaldo Eye Center, 2012). Even though extraocular muscles are small, they are very strong and efficient. This kind of muscles works as to turn or rotate an eye about its vertical, horizontal, and antero-posterior axes. It consists of medial rectus, lateral rectus, superior rectus, inferior rectus, superior oblique and inferior oblique (Montgomery, 2006). When we are focusing on something, all these muscles on both eyes are works together in order to move the eyes in every different direction. Besides that, muscle imbalance also becomes the factor in low the muscle tone towards the eye. Basically, low muscle tone or in medical term called hypotonia commonly occur to babies as well as children. At birth, the eye muscles are not well perform due to the eye muscles takes time to adjust, but within a few weeks the infant learns to move both eyes together and...
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