11-year-old children naked eye vision 4.7, not normal, may be refractive error, amblyopia, optic nerve papillitis caused by. 4.7 is equivalent to the international standard visual acuity scale of 0.5, the normal situation of 11-year-old children naked eye vision should be able to reach 1.0. 1. Refractive error: myopia, hyperopia, astigmatism and other refractive errors lead to lower vision, you can wear appropriate glasses after dilated optometry, in addition to regular review, usually every six months. 2. Amblyopia: vision loss caused by amblyopia requires timely training of macular fixation and fusion function to improve vision. 3. Optic Nerve Papillitis: Optic Nerve Papillitis can also lead to vision loss, and requires complete fundus examination and laboratory tests to determine the cause of the disease and then actively treat it. For an 11-year-old child with 4.7 visual acuity, it is important to go to the hospital and have the cause of the problem identified, so as not to cause further vision loss.