1. Most Common Questions from Parents

Many parents often ask: "I heard defocus lenses can control my child's myopia, so I got them right away. But after wearing them for a while, their prescription is still increasing. What's causing this? Did we miss something important when choosing defocus lenses?"

II. Core Answer

Many parents overlook the following when selecting myopia control lenses:Comprehensive eye examination and ongoing myopia managementDefocus lenses are clinically proven to be effective tools for myopia control, but they are not a "one-size-fits-all" solution. Simply prescribing defocus lenses without addressing binocular vision function, daily visual habits, and regular follow-ups can significantly reduce their effectiveness or even lead to continued prescription progression while wearing them.

III. How Myopia Develops

To understand this issue, we first need to grasp how myopia develops. In a normal eye, light entering the eye focuses precisely on the retina, providing clear vision. When the axial length (the front-to-back length of the eyeball) becomes too long, light focuses in front of the retina, causing distant objects to appear blurry—this is myopia. The progression of myopia is closely linked to eye development, genetics, and environmental factors related to visual habits.

A child's eye development is like a sapling growing. If the environment isn't right, the sapling may grow crookedly; the same applies to eyes. Prolonged close-up activities—reading, doing homework, or using electronic devices—keep the ciliary muscles constantly tense, much like a spring stretched too long. Over time, elasticity declines. This sustained near-work load causes the eyeball to elongate, leading to the onset and progression of myopia.

4. Five Key Factors Influencing Myopia Progression

1. Genetic factors

If both parents have high myopia, their child faces a significantly higher risk of developing myopia compared to the general population. Genetics sets a foundational baseline for eye development; therefore, these children require earlier and more vigilant myopia prevention and control, with close monitoring of axial length changes.

2. Read/Write Distance

When children read or do homework with their eyes too close to the book, their eyes must constantly adjust, which easily leads to eye strain and accelerates myopia progression. It is common to see many children hunching over their desks with their heads low, almost pressing the book against their faces. This poor posture can cause significant harm to their eyes.

3. Outdoor Activities

[Image illustration: Children outdoors in sunlight for eye health protection]

Many children today get insufficient outdoor activity. Natural sunlight outdoors stimulates the retina to release dopamine, which helps slow excessive axial eye growth—a critical factor in myopia prevention and control. Just as young saplings need sunlight to grow strong, children's eyes also require natural light to support healthy eyeball development.

4. Electronics

Blue light emitted from phone and tablet screens can strain the eyes. When children are immersed in electronic devices, their intense focus reduces blinking frequency, leading to dryness and eye fatigue. This significantly increases the risk of developing and progressing myopia.

5. Binocular vision function

Good binocular vision ensures that both eyes work together smoothly for comfortable viewing. However, many children suffer from binocular vision disorders such as accommodative insufficiency or convergence insufficiency. If these issues are not identified and addressed early, even with defocus lenses, poor eye coordination can still cause visual fatigue, directly undermining the effectiveness of myopia control.

V. Scientific and Comprehensive Myopia Intervention Plan

1. Professional digital refraction is the foundation for fitting defocus-control lenses.

Selecting progressive myopia-control lenses for children requires precise, professional eye examinations. Jingmu Eyewear follows Zeiss's 11-step standardized digital fitting process: First, we conduct an in-depth consultation to fully understand the child's real-world visual demands, such as studying at school and using electronic devices; then we use...ZEISS I.Profiler Plus Wavefront AnalyzerComplete full-wavefront aberration mapping to quantify night glare, ghosting, starbursts, and low-light vision defects. Combined with KEELER professional retinoscopy and ZEISS VISUPHOR 500 precision comprehensive refraction, our multi-step verification process ensures accurate, reliable data. Only precise measurements enable the fitting of true myopia-control lenses tailored for children.

2. Choose defocus lenses scientifically

Defocus lenses use specialized optical design to project peripheral light in front of the retina, creating a myopic defocus signal that slows axial elongation and delays myopia progression. With numerous brands and types available, there is no one-size-fits-all lens; selection must be individualized based on each child's eye data and visual habits.

3. Binocular Vision Screening and Targeted Training

Complete a full binocular vision assessment before ordering glasses: including a comprehensive binocular vision screening, quantitative evaluation of accommodation-convergence function, and grading analysis of ocular alignment and phoria. If abnormalities are detected, initiate targeted training promptly. Training improves binocular coordination, enhances visual comfort, and ensures the myopia-control efficacy of defocus lenses is fully realized.

4. Daily Eye Usage Behavior Management

Parents should help children develop healthy eye habits: ✅ Maintain a reading distance of one foot when writing or reading; ✅ Strictly follow the 20-20-20 rule: After viewing an electronic screen for 20 minutes, look at something more than 6 meters away for at least 20 seconds; ✅ Ensure at least 2 hours of outdoor activity in natural light daily.

5. Maintain regular follow-ups and monitor vision dynamically.

Wearing myopia control lenses is not a one-time fix. We recommendRecheck key metrics like vision and axial length every 3–6 months.Regular follow-ups to monitor myopia progression and lens fit, enabling immediate adjustments to the management plan. Jingmu Eyewear creates a personalized myopia management profile for each child, continuously tracking vision changes and providing long-term pediatric visual health monitoring services.

VI. Three Common Misconceptions Parents Have When Choosing Defocus Lenses

Myth 1: Overvaluing lens brands, assuming big names guarantee better myopia control.

Many parents prioritize lens brands when selecting myopia-control glasses, assuming big brands guarantee results. In reality, the best choice is a lens tailored to your child's eye condition. Beyond the lens itself, final myopia management outcomes depend on accurate refraction, binocular vision function, and family eye care habits.

Myth 2: You can ignore the lens once it's fitted

Some parents believe that once they've fitted their child with defocus lenses, the job is done. They stop supervising the child's screen time and neglect monitoring vision changes. Defocus lenses are just one tool for myopia control. To achieve optimal results, consistent parental supervision, child cooperation, and comprehensive myopia management throughout the entire process are essential.

Misconception 3: Overlooking binocular vision assessment

Binocular vision dysfunction can reduce the effectiveness of defocus lenses—a factor often overlooked by parents. Many children still experience frequent eye strain after wearing these lenses, typically because a complete binocular vision assessment was not performed during the fitting process.

VII. Summary and Recommendations

When choosing defocus lenses for your child, don't focus solely on the lens itself. Prioritize their overall eye health and commit to long-term myopia management. Selecting a professional optical clinic is essential. Jingmu Optical features Zeiss flagship digital equipment, an experienced optometry team, and a standardized custom dispensing system to provide personalized myopia control solutions for your child.

During daily prevention and control, parents should guide children to develop good eye habits, ensure sufficient outdoor activity, maintain regular follow-up exams, and promptly adjust intervention strategies. Controlling childhood myopia is a long-term effort that requires collaboration among parents, children, and professional institutions to achieve optimal results.

In our daily service at Jingmu Glasses, we've found that while most parents focus on lens brands, the key factors determining myopia progression are actually visual habits, binocular vision function, and consistent follow-up management.Myopia control for children is not solved by a single pair of glasses; it requires a continuous management process.

📎 Image List (Ready for Designer)

1. Outdoor Eye Care: Natural Light Protects Children's Eyes While Playing Outside

2. Electronic Device Risks: Reduced blinking and eye strain in children using tablets.

3. Illustration of Binocular Vision Function: Simple Graphic Showing How Both Eyes Work Together

4. Professional Fitting Scenarios: Zeiss Equipment Optometry Illustrations / Real Photos

5. Eye Health Infographic: 20‑20‑20 Rule & 1-Foot Reading Distance

6. Vision Health Record Diagram: Pediatric Myopia Management Card