Myopia, or “nearsightedness,” is when the eye focuses light in front of the retina instead of directly on it. This makes far away objects look blurry while close objects stay clear. Myopia happens when the cornea (the clear front part), the lens, or the length of the eye makes the focus land in front of the retina.
Children with myopia often become more nearsighted as they grow, especially between ages 7 and 12, when the eye grows quickly. Myopia usually continues to get worse through the teenage years, and sometimes into the early 20s, before stopping.
Things in life that affect myopia include:
Children with one or both nearsighted parents are at higher risk.
Long periods of reading or screen time can increase risk.
More time outdoors protects against myopia and may slow its progression.
