![]() The result is amblyopia or a failure to develop normal vision in the affected eye. The brain learns to ignore the distorted image and relies only on the better eye. If vision in one eye is distorted, nerve connections between that eye and the brain fail to develop properly. A newborn can see, but must learn to focus and to coordinate images from both eyes into a single, three-dimensional image. If the brain’s visual center has not developed by then, vision may be permanently impaired. The brain’s center of vision usually develops from birth to age 6 or 7 years. Poor vision in one eye resulting from a failure to develop normal sight during childhood commonly known as “lazy eye.” Amblyopia results from functional and structural abnormalities after birth. Poor vision in one eye resulting from a failure to develop normal sight during childhood commonly known as “lazy eye.” The brain’s center of vision usually develops from birth to age 6 or 7 years. Impaired vision that is unrelated to an ocular lesion and cannot be fully corrected with glasses most likely cause is abnormal vision during developmental years. If it is caught early, amblyopia can be corrected, however, after age 11 it is difficult if not impossible to train the brain to use the eye normally.Ī serious eye condition that may involve loss of sight in one eye.ĭimness of vision without detectable organic lesion of the eye. The visual system is fully developed between approximately the ages of 9 and 11. Amblyopia may occur in various degrees depending on the severity of the underlying problem. Amblyopia can occur for a variety of reasons, including strabismus (crossed or turned eye), congenital cataracts, cloudy cornea, droopy eyelid, nearsightedness, farsightedness, or astigmatism. Reduced visual acuity not correctable by refractive means and not attributable to obvious structural or pathological optical.Īmblyopia is a term used to describe a loss of vision in an eye that appears to be physically healthy. A common example is squint and other forms may be caused by the cyanide in tobacco smoke or by drinking methylated spirits. “Lazy eye,” the most frequent cause of visual impairment in preschool children.Ī lack of normal vision without a structural cause. Reduced vision in an eye without a detectable organic lesion. Unilateral reduction in visual acuity, in which there is no apparent pathologic condition of the eye.
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