Nearsightedness n. : See Myopic, and Myopia.

Example:
How to protect my eyes from further Nearsightedness?

Taxonomy
myopia, the eye, Ophthalmol, PMID, diopters, Optom, eye, Refractive error, reading glasses, Sci, lens, Physiol, adult, environmental factors, global prevalence, elongation, Ophthalmic, Myopia control.

Defination from the web:
near-sightedness. ... Rehm, Donald "The Myopia Myth-The Truth About Nearsightedness And How To Prevent It" Chapter 6 Published by The International Myopia Prevention ...