Topic 01 of 08
Myopia in children
Short-sightedness is not a muscle that got tired. It is an eye that grew a fraction of a millimetre too long — and the whole fight is over that millimetre.
The short version
Myopia (short-sightedness, nearsightedness) happens when the eyeball lengthens a little too much during childhood, so distant things blur. Genes load the dice, but the rise in myopia over one generation is driven by how children live: too little daylight, too much close work held too near. Every dioptre kept off a child's prescription still matters at thirty and at sixty, because higher myopia raises the risk of serious eye disease later. Prevention is mostly daylight (Topic 02); once myopia has started, the options are in Topic 05. This hub explains the mechanism, the numbers on the prescription card and what a normal and a worrying rate of change look like.
All articles in this topic
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