What is Nearsightedness & Can It Be Cured?

DR. AJAY SHARMA January 31, 2024

Approximately 25% of the U.S. population experiences myopia, commonly known as nearsightedness. Although it can be controlled or postponed, no cure is currently identified.

If objects appear clear up close but become progressively blurrier at a distance, you may be dealing with myopia.

While no definitive cure for myopia exists, effective management is possible through corrective lenses or refractive procedures like LASIK. Taking early measures, such as restricting screen time for children, can occasionally slow down the advancement of myopia.

What is Nearsightedness?

Nearsightedness, or myopia, is a vision-related eye disease where distant objects appear blurry while close-up objects remain clear. If you have myopia, reading a book may be easy, but reading a billboard down the road might pose a challenge.

Myopia is categorized as a “refractive error” of the eye, meaning that vision problems arise from the eye’s shape. In the case of myopia, the eye is typically longer from front to back, resembling the shape of an olive or a grape. This elongation causes light to focus in front of the retina rather than on it, resulting in difficulty seeing objects at a distance.

This common condition affects approximately 25% of individuals aged 12 to 54 in the United States. It ranks as the fifth most prevalent cause of impaired vision and the seventh most common cause of legal blindness.

Symptoms

• Blurred vision when attempting to focus on distant objects.
• Squinting to achieve a clear vision.
• Eye fatigue or discomfort following extended periods of activities like reading or using a computer.
• Headaches resulting from eye strain or frequent squinting.
• A habit of sitting closer to the TV or computer screen to enhance visibility.
• Challenges with seeing clearly while driving, particularly at night or in low-light situations.

Is There a Cure for Nearsightedness?

While no cure for nearsightedness is established, various treatment and eye care options are available to assist in symptom management or decelerate the condition’s progression.
Can Nearsightedness Improve By Itself?
In certain instances, myopia may naturally improve, especially during childhood and adolescence. The growth and development of the eyeball during these stages could lead to self-correction of vision.

Research has additionally indicated that spending more time outdoors may help prevent the onset or progression of myopia.

Treatment Options for Nearsightedness

The primary objective in addressing nearsightedness is to enhance vision by facilitating the accurate focusing of light onto the retina, achieved through corrective lenses or refractive surgery. Comprehensive management of nearsightedness also involves routine surveillance for potential complications, including glaucoma, cataracts, and retinal detachment.

Prescription Lenses

Corrective lenses are a fundamental method for treating nearsightedness, counteracting the cornea’s excessive curvature or the eye’s elongation. Various types of prescription lenses include:

• Eyeglasses: A straightforward and secure means to sharpen vision affected by nearsightedness. Eyeglass lenses can also be customized to address a combination of refractive errors, such as nearsightedness, astigmatism, and presbyopia.
• Contact Lenses: These small, plastic disks are placed directly on the cornea. A single contact lens may correct multiple refractive errors. With diverse materials and care requirements, your eye care specialist can recommend contact lenses tailored to your prescription and lifestyle.

Refractive Surgery

Refractive surgery reduces dependence on eyeglasses and contact lenses by employing laser technology to reshape the cornea, diminishing the necessity of nearsighted prescription lenses. While eyeglasses may still be required occasionally after surgery, their reliance on them is significantly reduced.

• 1- Laser-assisted in situ keratomileusis (LASIK): During this procedure, the eye surgeon creates a thin, hinged flap in the cornea and utilizes a laser to remove corneal tissue, flattening its domed shape. LASIK recovery is typically faster and less discomfort than other corneal surgeries.
• 2- Laser-assisted subepithelial keratectomy (LASEK): The surgeon forms an ultrathin flap solely in the outer protective cover of the cornea (epithelium). Using a laser, the cornea is reshaped to flatten its curve, after which the epithelium is replaced.
• 3- Photorefractive keratectomy (PRK): Similar to LASEK, this procedure involves completely removing the epithelium, followed by laser corneal reshaping. A temporary protective contact lens is placed until the natural regrowth of the epithelium conforms to the cornea’s new shape.
• 4- Small incision lenticule extraction (SMILE): This technique avoids creating a flap or removing the epithelium. Instead, a laser is utilized to cut a small disk-shaped piece of the cornea (lenticule), which is then extracted through a minimal corneal incision.

Surgical interventions are not universally applicable to all individuals with nearsightedness. They are recommended only when nearsightedness has stabilized. Your surgeon will thoroughly explain the advantages and risks of surgical treatment options.

The Bottom Line

Nearsightedness, also known as myopia, is highly prevalent.

While it is not entirely preventable, measures can be taken to slow or delay its progression, mainly when initiated during childhood. Effective management of myopia is achievable through various treatments, including corrective lenses, contact lenses, or surgical interventions.

If you suspect you may have myopia, seeking guidance from an optometrist or ophthalmologist is crucial to determining the most suitable course of action tailored to your needs.