Is myopia hereditary?

The eyes are the windows to the soul—protecting them should never be overlooked. In daily life, it is common to see many children of small stature wearing thick glasses perched on their nasal bridges, giving them a scholarly air. Yet, when they remove their glasses, not only do their deeply sunken, lifeless eyes become apparent, but they also suffer the distress of functional blindness—being unable to see clearly without corrective lenses. So, is myopia hereditary? Below, we address this question.

Is Myopia Hereditary?

Current medical research indicates that myopia does have a genetic component; however, the probability of inheritance varies significantly among individuals. For instance, some children whose parents both have myopia—even high myopia—remain completely free of refractive error. Conversely, some children develop high myopia despite having no family history of the condition. Medical evidence suggests that the higher the degree of parental myopia, the greater the likelihood of transmission to offspring. Specifically, if both parents have high myopia, their child’s risk of developing myopia is comparatively elevated. If one or both parents are myopic, it is crucial to minimize the child’s prolonged near work during development and to regularly encourage outdoor physical activity—both of which can yield beneficial postnatal effects in supporting healthy visual development.

Knowledge Expansion: How to Prevent Myopia

1. Incorrect posture while using the eyes is another significant factor influencing myopia onset. Therefore, when engaging in near-vision tasks, ensure that desk and chair heights are appropriately proportioned; sit upright with books placed approximately 30 cm from the eyes. Avoid improper habits such as reading in moving vehicles, reading while lying in bed, or reading while slouching or tilting the head sideways.

2. After 45–60 minutes of continuous near-vision activity, allow the eyes to rest for 10–15 minutes. During this break, gaze out a window into the distance or engage in outdoor activities to fully relax the eye’s ciliary muscles. Additionally, performing eye exercises daily helps alleviate visual fatigue, restore accommodative function, and prevent myopia development.

The above outlines whether myopia is hereditary. We hope this information proves helpful to you.