裸眼视力和近视有关系吗

There is a relationship between uncorrected visual acuity and the degree of myopia. Generally, the higher the degree of myopia, the poorer the uncorrected vision, making it more difficult to see distant objects clearly. It is recommended to have regular eye examinations at a hospital and take effective measures for prevention and treatment. Details are as follows:

Uncorrected visual acuity refers to the farthest distance a person can see clearly without using any corrective methods. Myopia occurs when, with accommodation relaxed, parallel light rays entering the eye are refracted by the eye's optical system and focus in front of the retina, forming a blurred circle of light on the retina, resulting in blurry vision for distant objects. The higher the degree of myopia, the worse the uncorrected visual acuity, because excessive refractive power in the myopic eye causes light to focus in front of the retina, preventing clear vision of distant objects.

However, there is not a completely one-to-one correspondence between uncorrected visual acuity and the degree of myopia, as uncorrected vision is also influenced by other factors such as eyeball shape, corneal curvature, and overall eye health. Therefore, even with the same degree of myopia, uncorrected visual acuity may vary among individuals. Each person’s eyes have different accommodative abilities; due to differences in accommodative strength, people may require different eyeglass prescriptions to achieve the same level of corrected vision.

In daily life, avoid prolonged eye use, ensure adequate lighting, and avoid excessively bright or dim environments. Maintain sufficient intake of nutrients such as vitamin A, vitamin C, and protein.