If a 10 year old child’s vision of 4.7 is caused by a refractive error, it can be corrected with eyeglasses, but glasses for other conditions are not effective. The range of normal vision varies at different ages, and a 10-year-old child’s vision can develop to about the point where a normal person’s vision should be around 5.0 on a vision chart. If a child’s vision is around 4.7, which is less than normal, he or she may seek medical attention for an examination. If a 10-year-old child’s vision of 4.7 is caused by a refractive error such as myopia, the patient may wear glasses to correct his or her vision. If the child’s vision loss is caused by cataracts, glaucoma, etc., wearing glasses is ineffective, and usually do not need to wear glasses to correct. Children also need to improve poor eye habits, avoid reading while traveling, walking or lying down, and have their vision checked regularly. Children with vision loss are advised to seek prompt medical attention to assess their condition and follow doctor’s instructions for treatment.