What Causes Myopia and How Is It Treated?

What Causes Myopia and How Is It Treated?

Oct 01, 2021

Myopia is a medical term for nearsightedness. It is a vision condition in which you can see objects near to you clearly but see objects farther away as blurred. Myopia may develop rapidly or gradually when the shape of your eye causes light rays to bend incorrectly. It causes images to be focused in front of the retina instead of on the retina.

This condition is often detected and diagnosed during childhood between the early school years and teenagehood.

Myopia prevents a person from performing certain tasks well and detracts from enjoying activities that require you to see far. Let your doctor know if you have some of the symptoms highlighted below, and a comprehensive eye exam will be carried out.

After diagnosis, seek myopia control in Mississauga, ON. There, you will be fitted with myopia glasses, contact lenses or other myopia correction treatment options to correct this problem or slow its progression.

Types and Causes of Myopia

There are two types of myopia; high and degenerative myopia. Myopia occurs when the eyeball is too long, or the retina is too curved. As a result, when light enters the eye, it focuses incorrectly. It causes images to focus in front of the retina instead of directly on it, causing blurred vision.

High myopia occurs when the eyeball grows more than normal and becomes very long front to back. This myopia eye condition is serious and increases your chances of having other eye conditions such as cataracts, glaucoma and detached retina.

Degenerative myopia is usually genetic and is caused by a quick lengthening of the eyeball. It causes severe nearsightedness in teenage or early adult years and increases chances of glaucoma, detached retina and abnormal blood vessel growth in your eyes.

Symptoms of Myopia

They include:

  • Headaches caused by straining your eyes
  • Blurry vision when looking at objects that are far away
  • Squinting or partially closing the eyelids when you want to see clearly
  • Difficulty seeing at night
  • Eye fatigue when you try to see far away objects

If you notice these symptoms in a child, take them for a comprehensive eye exam.

  • Blinking excessively
  • Squinting persistently
  • Frequently rubbing the eyes
  • Being unaware of distant objects
  • Sitting closer to the television screen or the front of the classroom to see properly.

Diagnosis of Myopia

Your optometrist will conduct a basic eye exam to help diagnose this condition. Then, a refraction assessment is done to determine whether you have vision issues such as farsightedness or nearsightedness, presbyopia or astigmatism.

Various instruments may be used to test your distance and close-up vision. An eye health exam is also performed where the specialist views inside your eyes.

Treatment of Myopia

This condition is treated by improving vision by helping light to focus on your retina. Myopia correction is done using refractive surgery or corrective lenses. Myopia control in Mississauga, ON, includes regular monitoring for complications of this condition such as glaucoma, cataracts, and retinal detachments and tears.

Methods of myopia treatment in Complete Eyecare include:

Prescription Lenses

Corrective lenses treat nearsightedness by counteracting the increased curvature of the cornea or increased eye length. In addition, a patient may opt for myopia glasses or contact lenses.

  • Nearsighted glasses sharpen vision that is blurred by myopia. Your eye doctor may prescribe shortsighted glasses with single vision, trifocals, bifocals or progressive multifocal.
  • Contact lenses are worn right on the eye to correct myopia vision. You will be helped in choosing a suitable pair of lenses.

Refractive Surgery

This eye surgery utilizes laser beams to reshape the cornea. As a result, it decreases the need for nearsighted prescriptions such as lenses. Types of refractive surgery include:

  • LASEK or Laser-Assisted Sub-epithelial keratectomy

An ultra-thin flap is created in the cornea’s outer protective cover. A laser is then used to reshape the cornea’s outer layers and flatten its curve. The outer protective cover of the cornea is then replaced.

  • PRK or Photorefractive Keratectomy

The cornea’s outer protective layer is completely removed then a laser is used to reshape the cornea. This layer of the cornea is not replaced but grows back naturally and conforms to the cornea’s new shape.

  • LASIK or Laser-Assisted in Situ Keratomileusis

Your eye surgeon will make a thin, hinged flap into the cornea, then use a laser to remove the inner layers of your cornea to flatten its curved shape.

At Complete Eyecare, we offer treatments that can slow down the progression of myopia, such as low dose atropine, Misight contact lenses and progressive spectacle lenses. Contact us for eye emergencies and comprehensive eye care.

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