What Is Myopia? A Guide to Nearsightedness and Its Causes

In a world dominated by screens and digital devices, the prevalence of myopia, or nearsightedness, is on the rise. As more people struggle to see distant objects, it’s crucial to understand what myopia is and explore effective solutions. Let’s explore the basics of myopia and how Zenni’s eyewear can help those affected see more clearly.

Understanding Myopia: The Basics of Nearsightedness

Myopia is a common refractive error in which people can see close objects clearly, while distant objects appear blurred. The condition occurs when the eyeball is too long, or the cornea is too curved, causing light to focus in front of the retina instead of directly on it. Myopia often develops during childhood and adolescence, but it can progress over time and affect people of all ages.

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Factors Contributing to Myopia:

Several factors contribute to the development and progression of myopia. Genetics play a significant role, with a higher likelihood of myopia if one or both parents are nearsighted. Environmental factors, such as prolonged near work (reading, computer use, etc.) and limited outdoor activity, can also influence the onset and progression of myopia.

Myopia often first appears during childhood, commonly between ages 8 and 12, and can progress relatively quickly during the teenage years as the body continues to grow. This is one reason parents are often encouraged to schedule regular eye exams for school-age children, even before any symptoms are obvious.

Symptoms of Myopia and When to See an Eye Doctor

Common signs of myopia include eyestrain, headaches, squinting, difficulty seeing objects far away, such as road signs or a classroom board, and trouble seeing clearly at night. These symptoms often become more noticeable in children ages 8 to 12. However, myopia can be diagnosed at any age, and adults can develop new or worsening myopia as well.

An eye doctor can diagnose myopia during a comprehensive eye exam. Along with a standard vision test, doctors may use a retinoscope, which shines light into the eye to see how it reflects off the retina, or a phoropter, which measures refractive error and helps determine the right prescription. Regular eye exams are the best way to catch myopia early and keep a prescription current as it changes over time.

Types and Severity of Myopia: Mild, Moderate, and High

Myopia is measured in diopters, a unit that describes the strength of lens correction needed, and is generally grouped into three levels of severity:

• Mild myopia: Roughly -0.50 to -3.00 diopters, the most common level of nearsightedness.
• Moderate myopia: Roughly -3.00 to -6.00 diopters, where distance vision is more significantly affected.
• High myopia: Greater than -6.00 diopters, which carries a higher risk of eye health complications and often requires closer monitoring.

Because high myopia usually stabilizes between ages 20 and 30, tracking prescription changes with regular eye exams is especially important during childhood and the teenage years, when myopia tends to progress fastest.

The Impact of Myopia:

Myopia affects visual clarity and can also lead to various eye health issues if left uncorrected. People with myopia may experience eye strain, headaches, and squinting, especially when trying to see distant objects. Moreover, high myopia increases the risk of developing serious eye conditions like retinal detachment, glaucoma, and cataracts. In more severe cases, high myopia can also lead to myopic maculopathy, a condition affecting the macula that can threaten central vision, which is one reason eye doctors recommend closer monitoring for anyone with a high degree of nearsightedness.

These risks are part of why eye doctors emphasize correcting myopia rather than leaving it unaddressed, even when the blur feels manageable day to day. Wearing an accurate, up-to-date prescription helps reduce eyestrain and the squinting that can accompany uncorrected distance vision. At the same time, regular checkups give your eye doctor the chance to monitor your eye health over time, not just update your lens power.

How Common Is Myopia? A Growing Global Concern

Myopia has become increasingly common worldwide, in part due to more time spent on screens and other near activities. In the United States, myopia’s prevalence has climbed from roughly 25% of the population in 1983 to nearly 50% in 2017. The rise is even more pronounced in parts of East Asia, where studies estimate that myopia now affects 80% to 90% of young adults in some urban areas, a trend researchers often describe as a myopia epidemic. The World Health Organization has projected that by 2030, nearly 40% of the world’s population could be nearsighted.

Children in urban areas tend to show higher rates of myopia than those in rural settings, which researchers largely attribute to more time spent on near work indoors and less time spent outdoors. This pattern has fueled growing interest in myopia control, an approach aimed at slowing myopia progression in children rather than only correcting it once it appears.

Tips to Help Manage Myopia Risk

While myopia can’t always be prevented, especially when genetics are involved, a few everyday habits may help support healthy vision and slow its progression in children:

• Schedule Regular Eye Exams: Comprehensive eye exams help catch myopia early and keep prescriptions current as vision changes.
• Reduce Screen Time: Regular breaks from prolonged screen use can help reduce eye strain from near work.
• Increase Outdoor Activities: Research suggests a potential link between more time spent outdoors and reduced myopia progression in children.
• Follow Your Doctor’s Guidance: For children with progressing myopia, an eye doctor can help determine whether options like ortho-k, multifocal contact lenses, or atropine drops are worth considering.

Treatment and Correction Options for Myopia

There’s no single best way to correct myopia. The right option depends on your age, lifestyle, and how your eyes respond, so it’s worth discussing your options with your eye doctor. Common approaches include:

• Eyeglasses and Contact Lenses: The most common and straightforward way to correct myopia, adjusting how light enters the eye so distant objects come into focus. Zenni offers prescription glasses for myopia, and contact lens wearers can also shop Next Day Contacts, a Zenni-affiliated retailer.
• Refractive Surgery: Procedures like LASIK reshape the cornea with a laser to correct how light travels through the eye. This is typically considered for adults once their prescription has stabilized.
• Orthokeratology (Ortho-K): A treatment using rigid contact lenses worn overnight to reshape the cornea temporarily, most often used for children in myopia control programs, such as the Myopia Clinic at UC Berkeley, which was pioneered in part by Dr. Maria Liu’s early work in the field.
• Low-Dose Atropine: Eye drops used at bedtime that can help slow myopia progression in children and adolescents, typically used alongside glasses or contacts rather than as a standalone correction.

During myopia control treatment, a child’s glasses prescription may change gradually. With ortho-k lenses specifically, the cornea gradually returns to its original shape as the day progresses, causing residual myopia, or a temporary return of nearsightedness, by evening—Zenni Optical steps in by offering cost-effective prescription eyewear that can complement this process. Parents can work with their myopia control doctors to obtain prescription glasses that are slightly underpowered, so children can still see clearly at night even as the orthokeratology lens effects wear off.

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Zenni’s Solution for Myopia:

Zenni recognizes the challenges of myopia and offers a range of eyewear solutions to address them. Our collection includes prescription glasses designed to provide clear and comfortable vision for individuals with myopia. From stylish frames to specialized lenses, Zenni combines fashion and function, ensuring you not only see well but also look great.

Whether you’re picking out a first pair of glasses for a newly diagnosed child or updating a long-standing prescription, Zenni’s online tools make it easy to enter your prescription, choose a frame that fits your face and lifestyle, and add the lens features that matter most to you, all without leaving home.

Zenni’s Features:

• Prescription Lenses: Zenni’s prescription lenses are crafted with precision to meet the specific needs of individuals with myopia, providing accurate vision correction for clearer sight.
• Anti-Reflective Coating: Our anti-reflective coating minimizes glare and reflections, reducing eyestrain and discomfort often experienced by those with myopia, especially during nighttime driving or screen use.
• Blue Light Protection: Zenni’s lenses with blue light protection help reduce digital eye strain from extended screen time, a common concern for people with myopia who spend long hours on computers or other devices.
• Fashionable Frames: Zenni understands that eyewear is not just a vision correction tool; it’s a fashion statement. Our diverse collection of stylish frames lets people with myopia express their personality while enjoying clear, comfortable vision.

Myopia may be common, but with Zenni’s commitment to innovative, stylish eyewear, navigating the myopic maze has never been easier. Take control of your vision and explore Zenni’s collection to find eyewear that not only corrects your vision but also complements your unique style. Shop new arrivals and see the world more clearly with Zenni, where fashion meets functionality.

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