A seven-year-old with 0.6 visual acuity is not normal and may be due to eye disease or refractive error. The normal visual acuity for a seven year old is to have a decimal visual acuity of 1.0 and above and a logarithmic visual acuity greater than or equal to 5.0. If a seven year old child has a decimal visual acuity of 0.6, which is equivalent to a logarithmic visual acuity of 4.8, both of which are lower than the normal indicator, there is a problem with the visual acuity. A child’s visual acuity of 0.6 can be caused by refractive errors such as myopia, hyperopia, or astigmatism. It can also be caused by eye diseases, such as keratoconus, glaucoma, cataract, fundus lesions and so on. It is recommended to go to a regular ophthalmology department for a clear diagnosis and take appropriate measures. If it is eye diseases that cause vision loss, the original disease should be actively treated. If it is refractive error that causes vision loss, the baby can be corrected by wearing glasses. In conclusion, a seven-year-old child with 0.6 visual acuity less than 1.0 is not normal and is a sign of vision loss.