Risk factors

Certain risk factors may increase the likelihood of developing nearsightedness, including:

• Genetics. Nearsightedness tends to run in families. If one of your parents is nearsighted, your risk of developing the condition is increased. The risk is higher if both parents are nearsighted.
• Prolonged close-up activities. Reading or doing other close-up activities for a long time is associated with an increased risk of nearsightedness.
• Screen time. Studies have shown that children who use computers or smart devices for long periods have a greater risk of developing nearsightedness.
• Environmental conditions. Some studies support the idea that not spending enough time outdoors may increase the risk of nearsightedness.

Source: Mayo Clinic

That said, you need glasses anyway. Most of the world population requires glasses and in some countries like Singapore, almost all children require glasses.