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esotropia
Esotropia
is a form of strabismus, or “squint,” in which one or both eyes turns inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. Esotropia is sometimes erroneously called “lazy eye,” which describes the condition of amblyopia—a reduction in vision of one or both eyes that is not the result of any pathology of the eye and cannot be resolved by the use of corrective lenses. Amblyopia can, however, arise as a result of esotropia occurring in childhood: In order to relieve symptoms of diplopia or double vision, the child's brain will ignore or “suppress” the image from the esotropic eye, which when allowed to continue untreated will lead to the development of amblyopia. Treatment options for esotropia include glasses to correct refractive errors (see accommodative esotropia below), the use of prisms and/or orthoptic exercises and/or eye muscle surgery.
==Etymology==
The term "esotropia" is ultimately derived from the Ancient Greek ἔσω ''ésō'', meaning “within”, and τρόπος ''trópos'', meaning “a turn”.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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