Medical Term for Nearsightedness
The medical term for nearsightedness is myopia 1.
Definition
Myopia is a common optical aberration in which parallel light rays from a distant image are focused on a point anterior to the retina (in front of the retina), rather than directly on it 1. This results in a blurred image when viewing distant objects, while near vision typically remains clear.
Classification by Severity
The 2023 American Academy of Ophthalmology guidelines classify myopia based on refractive power 1:
- Low to moderate myopia: Less than 6.00 diopters (D) of myopia
- High myopia: 6.00 D or more of myopia
High myopia carries substantially increased lifetime risk of sight-threatening complications, including myopic macular degeneration, retinal detachment, and glaucoma 2.
Clinical Context
Myopia is the most common refractive error worldwide, with prevalence exceeding 80% in some East Asian urban populations and rising rapidly globally 2. It typically develops in childhood and progresses more rapidly with earlier onset 3. Over half of Americans older than 40 have ametropia (refractive error) of sufficient magnitude to require correction 1.
The term "myopia" is used interchangeably with "nearsightedness" in clinical practice, though myopia is the formal medical terminology used in ophthalmology literature, guidelines, and medical documentation [@1-10@].