What is the normal vision for the eyes?
Disease description:
The child's school vision screening indicates 0.8 vision. I've heard that normal vision is 1.0. He often plays with his phone. Is this vision considered normal? Could it be myopia?
Doctor's answer (1)
Dr. Wang Shuai
The standard for normal vision is typically expressed as 1.0 or 20/20.
A vision measurement of 1.0 or 20/20 means that a person with normal vision can clearly distinguish the smallest optotype on a standard visual acuity chart when standing at a distance of 20 feet, seeing what an average person should be able to see at that distance.
However, visual performance isn't determined by this single value alone; it also relates to other factors such as visual field, contrast sensitivity, and color vision. For example, even if visual acuity reaches 1.0 or 20/20, if there are problems such as narrowed visual field, reduced contrast sensitivity, or abnormal color vision, the overall visual function may still be considered abnormal. Therefore, a comprehensive assessment of a person's visual health requires a series of ophthalmic examinations, including visual acuity testing, fundus examination, and visual field testing. Additionally, children's vision gradually improves with growth and development, reaching near or adult levels by ages 6 to 7.
If you have concerns about your vision, it is recommended to consult a professional ophthalmologist for a detailed eye examination.
