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432 4 Ave S 4th Ave S Lethbridge AB T1J 4C9 (403) 327-5035
Visual Effects
19 Broadway N #15 Raymond AB T0K 2S0 (403) 752-4420
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Lethbridge, AB 403-327-5035

Raymond, AB 403-752-4420

Myopia (Nearsightedness)

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Myopia (nearsightedness) is a common refractive error that impedes distance vision (unlike hyperopia, which impedes close-up vision). Refractive errors are the result of a physical irregularity of the eye, such as the lens being curved abnormally; these physical irregularities influence the way light enters the eye, and thus how we see.

Causes of Myopia

Most cases of myopia are due to one of two reasons:

  • The eye being abnormally long
  • The cornea being too curved

In most cases myopia is present in childhood, though it can also progress into adulthood. Children that have nearsighted parents are more likely to be nearsighted themselves.

Diagnosing & Treating Myopia

Myopia is generally diagnosed during a standard eye exam. During the eye exam the Optometrist will complete several tests that may indicate the presence of myopia. These tests include visual field testing, a visual acuity test, as well as results from the autorefractor.


  • Difficulty focusing on distant objects
  • Squinting frequently, especially when concentrating or trying to read
  • Headaches
  • Eye strain


Myopia is relatively straightforward to correct. In most people, corrective lenses do a suitable job in correcting sight so that it is clear and crisp.


The most common method of treatment for myopia is the use of corrective lenses via eyeglasses. The lenses will correct the refractive error and influence how light enters the eye. In so doing, they correct the problem and facilitate improved vision.

Contact Lenses

Similar to eyeglasses in method, but different in form, contact lenses alter the way light enters the eye and thus correct the refractive error. Unlike eyeglasses, contact lenses do not change your appearance and are preferred by many as a result.

Laser Eye Surgery

Laser refractive surgery is a safe and effective way to correct myopia. These surgeries are heavily advertised as “LASIK”, “LASEK”, or “PRK”, which are names of various versions of the procedure.

During the surgery, the surgeon uses a powerful laser to correct the refractive error. The result of a successful procedure is the elimination of the need to use corrective lenses. In most cases, correction is long-term and often permanent.

In some cases, the eyes regress back into a state of refractive error. This can usually be corrected via a second procedure.