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Vision Diseases, Disorders & Definitions

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N Definitions

Nearsightedness:

Focusing defect in which the eye has too much optical power. Light rays coming from a distant object are brought into focus before reaching the retina. Requires a minus lens correction to "weaken" the eye optically and permit distance vision.


References

Portions of this page are excerpted from Dictionary of Eye Terminology, copyright 1990-2006 by Barbara Cassin and Triad Communications. Reprinted with permission.

Some of the information above is reprinted from the National Eye Institute, National Institutes of Health, and is for educational purposes only. Superior Vision strongly recommends eye exams as the best way to diagnose eye conditions and learn more about potential vision problems.