There is some debate about whether myopia is a disease or a refractive error
. The answer is uncovered by how myopia
is defined and measured.
What Is The Definition Of A Disease?
The Review of Myopia Management
provides a few definitions of disease to consider:
● A disease is any harmful deviation from the normal structural or functional state of an
organism, generally associated with certain signs and symptoms and differing in nature
from physical injury. (Encyclopedia Britannica, 2020)
● A disease is an abnormal condition affecting a living organism. Diseases are generally
understood to be medical conditions that involve a pathological process associated with
a specific set of symptoms. (Infectious Disease News, 2019)
Myopia, also called nearsightedness or shortsightness, is the inability to see objects at a
distance and is the most common vision issue amongst children and adults
. Myopia’s main
symptom is blurry distance vision; however, the physiological implications of myopia is that the
eyeball itself grows too long from front to back, see figure 1.