What is "corrected vision 0"? More than 5 inches?

Corrected vision is 0.5, which means that after wearing corrective glasses, vision can only see 0.5.

Generally speaking, the naked eye vision or corrected vision can reach 1.0, so the vision of 0.5 is definitely abnormal. It may be that the degree of glasses has changed, so I re-optometry and get new glasses to correct it. It may also be caused by other eye diseases and need symptomatic treatment.

Correcting vision is usually aimed at people with ametropia, not naked vision. Naked vision is actual vision, and corrected vision is to correct ametropia with glasses, resulting in decreased vision. Corrected vision refers to the vision after wearing glasses. Vision correction is a technology to restore vision and rebuild visual health system, which can see without auxiliary equipment.

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Extended data:

The causes of myopia are very complicated and can be mainly divided into two categories. One is congenital factors, that is, genetic factors. If both parents are highly nearsighted, then the chances of children being nearsighted are high; If one parent is highly myopic, the child has a nearly 50% chance of myopia; Even if both parents are not nearsighted, children still have a 25% chance of being nearsighted.

The other is myopia caused by acquired factors, which is related to bad eye environment and habits. For example, the posture of watching TV and using the computer is incorrect, the distance is too close, and the lighting environment is poor.

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