Eyesight 5.2 is generally a value obtained through a visual acuity chart examination, and how many degrees is related to the refractive state, which can only be clarified by an optometry examination. Visual acuity of 5.2 is an indication of the results of the visual acuity examination, within the normal range, in general, the naked eye visual acuity of 5.0 or 5.0 or more are normal vision. If you want to know the specific eye prescription, you need to take an optometry test to clarify, and you can’t directly convert the value obtained from the vision test. When the vision is normal, the degree of the eye is probably normal, but this is only a preliminary judgment, the specific need to further improve the examination to be clear. 5.2 vision usually pay attention to maintain and keep, it is recommended that reasonable use of the eyes, avoid the use of electronic products for a long time, stay up all night and other malpractices.