What does "short-sighted" mean?

Near-sighted; myopic; unable to focus on distant objects.

What is a synonym for "short-sighted"?

Common synonyms include: blind, brash, careless, dim-sighted, foolish, heedless.

adj

adj ·3 syllables ·Rare ·Advanced level

Adjective

1
Near-sighted; myopic; unable to focus on distant objects.
"a short-sighted man"
2
Unable to see long-term objectives; lacking foresight. figuratively
"a short-sighted idea"

"The idea that reading makes you short-sighted has been popular for a couple of hundred years."