Picture someone squinting at a sign down the street. Everything in their hands is sharp; everything past a few metres has gone soft. Nothing is wrong with the light and nothing is wrong with the sign — the clear zone simply stops close to them. Hold that picture of a short clear zone, because both uses of this word are the same picture: one is about the eyes, the other about thinking.
From the word’s history
The source entry here says myopia was borrowed from Ancient Greek muopia, built from muo, to shut or close, plus ops, eye. Literally it is the shut-eye condition, which matches the squint people fall into when they try to see something far away.
本包附的來源條目說 myopia 借自古希臘文 μυωπία，由 μύω（閉起來）加 ὤψ（眼睛）組成，字面上就是「把眼睛瞇起來」。這正好對上畫面：看遠的東西吃力時，人會不自覺瞇眼。
Wiktionary entry supplied in this packet (source_ref kaikki:3f6f69a190036ae4:621048747:9742), etymology_text field.
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