Month: December 2025

What Eyeglasses are Best for High Myopia?

In recent years, myopia has become increasingly prevalent, bringing significant inconveniences to daily life and work. Wearing corrective optical glasses remains the most common solution for myopia.

However, many people lack a clear understanding of how to choose eyeglasses based on their myopia degree such as what type of glasses, Optical frames, or lenses are suitable for -4.00D (400 degrees) myopia, and other related questions.

Optical frame Selection
People with high myopia have a wide range of options when choosing Optical frames and lenses. In terms of Optical frame styles: rimless, semi-rimless, and full-rim Optical frames are all viable. Generally, rimless Optical frames have degree limitations, they are not suitable for very high myopia and are recommended for those with myopia below -6.00D (600 degrees).

In terms of materials: both metal frame and acetate frame are applicable. Acetate frame typically offer rich color options, making them easy to match with different outfits. Metal frame especially pure titanium ones, boast excellent texture, they are lightweight and comfortable to wear without causing pressure on the nose or ears. Therefore, you can choose the Optical frame style, material, and color based on your face shape and personal preferences.

Lens Selection
High-quality lenses for high myopia should meet the following criteria:
Optical clarity with no color distortion;
Strong chemical resistance household solvents and chemicals will not damage the lenses;
Lower reflectivity than glass lenses, avoiding glare and eye discomfort;
Compatibility with multiple functional coatings, such as anti-radiation, scratch-resistant, oil-repellent, and anti-glare coatings.

A refractive index of 1.67 or lower is perfectly sufficient for most users. While it’s true that for the same prescription power, a higher refractive index results in thinner lenses—a key consideration for consumer aesthetics—there’s a critical trade-off to prioritize from the consumer’s perspective: sufficient is better than higher.

Why “sufficient is better than higher”?
For most people with high myopia, a refractive index of 1.67 is more than adequate. While it’s true that for the same degree, a higher refractive index results in thinner lenses (a key concern for high myopia patients seeking a more aesthetically pleasing look), there is a critical trade-off: the higher the refractive index, the lower the Abbe number. Below is a detailed analysis of the pros and cons to help you make an informed decision:

1. Higher Refractive Index (e.g., 1.74, 1.76)
Advantages:
Thinner and Lighter: The most significant advantage. For high myopia (e.g., above -8.00D), lenses with a refractive index of 1.74 will be noticeably thinner and lighter than 1.67 lenses, reducing the “bulky” appearance and relieving pressure on the nose.
Better Aesthetics: Thinner lenses fit more seamlessly into Optical frames, avoiding the “bottle cap” effect common with thick, low-refractive-index lenses for high myopia.

Disadvantages:
Lower Abbe Number: The Abbe number measures a material’s ability to disperse light. Higher refractive index materials (e.g., 1.74 polycarbonate or MR-174 resin) typically have an Abbe number around 30-32, while 1.67 lenses have an Abbe number of 32-36. A lower Abbe number means more chromatic aberration—when looking at objects (especially edges or bright light sources), you may notice slight color fringing (e.g., red or blue edges), which can cause eye fatigue during prolonged wear.
Higher Cost: The production process for high-refractive-index lenses is more complex, so they are significantly more expensive than 1.67 lenses (often 2-3 times the price).
Potentially Lower Impact Resistance: Some ultra-high refractive index materials (e.g., 1.76) are less tough than 1.67 or 1.60 lenses, making them more prone to chipping if dropped or impacted.

2. Moderate Refractive Index (1.67, Recommended for Most High Myopia Patients)
Advantages:
Balanced Optical Performance: With an Abbe number of 32-36, 1.67 lenses have minimal chromatic aberration, ensuring clear, natural vision without color distortion. This is crucial for reducing eye strain, especially for those who wear glasses all day (e.g., office workers, students).
Cost-Effective: Offering a good balance between thinness and price, 1.67 lenses are more affordable than higher-index options while still meeting the aesthetic needs of most high myopia patients (lenses are sufficiently thin for Optical frames of standard size).
Reliable Durability: Most 1.67 lenses are made of MR-7 or MR-8 resin, which have excellent impact resistance and scratch resistance (when paired with a quality coating), making them suitable for daily use.

Disadvantages:
Slightly Thicker Than Ultra-High Index Lenses: For extremely high myopia (e.g., above -10.00D) or those who prefer very slim Optical frames, 1.67 lenses may be slightly thicker than 1.74 lenses. However, this difference can be minimized by choosing Optical frames with smaller lens diameters or thicker rims to hide the edge thickness.

Conclusion
The core principle for selecting a lens refractive index is to prioritize optical clarity and comfort while balancing thinness and cost. For most high myopia patients (-3.00D to -6.00D):
A refractive index of 1.67 is optimal—it provides sufficient thinness, minimal chromatic aberration, and cost-effectiveness, making it suitable for long-term wear.
For those with extremely high myopia (above -6.00D) or who prioritize ultra-thin lenses (e.g., for aesthetic reasons), 1.74 lenses can be considered, but be aware of the potential for increased eye fatigue from lower Abbe numbers and the higher cost.

In summary, “sufficient is better than higher” there’s no need to pursue the highest refractive index blindly. Choose based on your myopia degree, wearing habits, and budget to achieve the best balance of vision quality, comfort, and aesthetics.

As a professional eyewear supplier, we are specialize in acetate eyewear and metal eyewear and buffalo horn eyewear.

What Lenses Should Children Choose for Myopia optical frame?

With the development of technology and the internet, children in modern society spend almost every day using cellphones or facing computer screens, leading to vision problems. Many parents then choose to buy optical frame for their children. But when it comes to selecting children’s optical frame, what type of lenses should they opt for?

Recommended Lenses for Children
It is advisable for parents to choose lenses made of PC (polycarbonate) or Trivex materials for their children. Compared with other lenses, these materials offer not only lighter weight but also better impact resistance and higher safety. Additionally, PC and Trivex lenses can protect children’s eyes from UV ray damage.

PC lenses are more affordable while maintaining good quality. Made of solid polycarbonate, a thermoplastic material, these lenses are formed through heating, resulting in exceptional toughness and shatter resistance, hence being called “safety lenses.” Weighing only 2 grams per cubic centimeter, PC is currently the lightest material used for eyeglass lenses. Glass lenses are not suitable for children, as kids are active and glass lenses are fragile; broken glass may cause eye injuries.

Common Misconceptions About Myopia Treatment in Children
Misconception 1: Myopia means needing optical frame immediately.
Many parents, upon learning their child has decreased vision, take them directly to an optical shop to buy optical frame without first visiting a hospital for a cycloplegic refraction exam. This exam is crucial to determine if the myopia is true, pseudomyopia, or caused by other eye conditions. In fact, some children have pseudomyopia, which can be reversed through improved eye habits or auxiliary treatment. If optical frame are prescribed based on pseudomyopia degrees, it may turn into irreversible true myopia.

Misconception 2: Wearing optical frame makes myopia worse.
Some parents hold the incorrect belief that “wearing optical frame aggravates myopia” and refuse to get corrective optical frame for their children. For teenagers, the eyes have strong accommodation ability over-accommodation leads to eye fatigue, which accelerates myopia progression. Therefore, if a myopic child does not wear optical frame, it is more likely to result in a continuous increase in myopia degrees.

Misconception 3: Wearing optical frame causes eye deformation.
Many parents think wearing optical frame leads to eye deformation. In reality, eye deformation is caused by myopia itself, not the optical frame. Some myopia patients, especially those with high myopia, have thinner eyeballs and a longer anteroposterior axis than normal, resulting in a protruding appearance (the so-called “deformation”). Without optical frame, myopia may progress faster, increasing the likelihood of eye deformation.

Since children’s bodies are in rapid development, parents must exercise extreme caution when choosing optical frame for them. When a child develops myopia, parents should take them to a regular optical shop or ophthalmic clinic nearby to select suitable optical frame and receive professional services.

As a professional eyewear supplier, we are specialize in acetate eyewear and metal eyewear and buffalo horn eyewear.

Introduction to Blue Light Blocking Eyeglasses

With the increasing popularity of electronic devices—most of which emit blue light—more and more people are recognizing the importance of blue light protection. Driven by this market demand, major manufacturers have eagerly launched blue light blocking eyeglasses. But how effective are they, and what exactly is blue light? As a professional eyewear supplier, we are here to shed light on blue light today.

What is Blue Light?
Blue light typically refers to the portion of visible light with a wavelength between 400-500nm. It is widely present in natural light and artificial light sources (especially LEDs). With the widespread use of LED lighting and digital devices like smartphones and computers, we are exposed to significant amounts of blue light radiation every day.

The Dual Nature of High-Energy Blue Light
Animal studies have shown that high-energy blue light (400-500nm, peaking around 440nm) can damage the photoreceptor cells in the retina, leading to macular degeneration and impaired vision. This has become a key basis for many businesses to promote the potential harm of blue light to human eyes. Modern lighting and display backlights use LEDs, which emit abnormally high levels of blue light. Observing the ubiquitous “phubbers” (people glued to their phones), it’s clear that smartphones have drastically changed our lifestyle. Blue light is a crucial factor regulating the body’s melatonin secretion: natural daylight suppresses melatonin production during the day, while its secretion at night induces drowsiness. Therefore, frequent smartphone use at night (when LED backlights emit high proportions of blue light) disrupts melatonin balance, making it increasingly difficult to fall asleep.

The Benefits of Blue Light
Night Vision: Unlike the human eye’s sensitivity to yellow-green light (550nm) during the day, night vision primarily relies on rod cells’ response to blue light (around 500nm, as shown in the figure below). This is why many vehicle headlights now use light sources with high blue light components.

Eye Development in Children: Research indicates that blue light plays a positive role in the eye development of growing children. The persistently high myopia rate among Chinese teenagers may be partly attributed to insufficient exposure to natural blue light during outdoor activities (alongside heavy academic pressure and excessive digital device use). Many experts have advocated for increased outdoor activities for adolescents.

Based on the above analysis, blue light poses potential risks but also offers undeniable benefits. Additionally, maintaining balanced, clear vision for all-day wear must be considered. On the other hand, modern lifestyles involve more prolonged and intense exposure to digital devices than ever before (evidenced by the prevalence of phubbers and IT professionals). Adapting to this change is essential. The widely recognized and reasonable approach (adopted by most reputable eyewear brands) is a conservative selective block of 15-20% of blue light.

Choosing Blue Light Blocking eyewear Products
There are various blue light blocking lenses on the market. How should you choose? Technically, there are two common implementation methods: tinting and coating.
1.Tinting Blue Light Blocking eyewear
Tinting involves adding specific dyes to the lens material to absorb blue light within a certain spectral range. Different levels of blue light protection are achieved by adjusting the tint depth.

2. Coating Blue Light Blocking eyewear
By adjusting the coating thickness, the reflection curve is enhanced in the blue light range to achieve protection. Such lenses typically have a bright blue or purple-blue appearance. Demonstrations with blue light flashlights clearly show blue light being blocked, which is highly persuasive to consumers. However, this type of protection reduces light transmittance—easily noticeable when the lens is placed on white paper. The reason is simple: higher reflection inevitably leads to lower transmittance, which may cause discomfort during all-day wear. Incidentally, this blue light blocking coating only needs to be applied to the front surface; the back surface (closer to the eye) should use a regular anti-reflective coating to reduce glare from rear reflections (see the difference between the two light tubes in the figure).

Important Notes on Blue Light Protection
Blue light has potential risks but also benefits. The necessity of blue light blocking varies by individual and depends on one’s lifestyle.
The core purpose of eyeglasses is to provide clear vision. More blue light blocking is not better—balancing light transmittance and protection is crucial.
High-quality products should minimize color distortion (test by placing the lens on white paper) and feature different coatings on each side (high blue light reflection on the front, regular anti-reflection on the back).
Blue light blocking eyewear products are not recommended for growing children and professionals requiring high color accuracy (e.g., designers).

As a professional eyewear supplier, we specialize in acetate eyewear, metal eyewear, and buffalo horn eyewear, offering style, function, and premium craftsmanship.

Introduction of Tortoiseshell Eyewear

Nowadays, Eyewear are no longer merely tools for correcting vision. The eyewear materials have evolved from the early glass and metal to increasingly lightweight options, while wearing styles have become diverse. They play a vital role both in daily life and the fashion industry. For some fashion enthusiasts, a single eyewear frame alone is enough to complete an outfit, and matching different Eyewear every day has become a lifestyle for many. Let’s explore the unique charm of tortoiseshell Eyewear.

Tortoiseshell is a premium choice for decoration and collection, and it is also highly valued as a traditional medicinal material. In recent years, it has emerged as a popular new element in various accessories. Most tortoiseshell Eyewear are handcrafted, featuring amber-like colors that are warm, delicate, and full of classic elegance.
Beyond meeting aesthetic needs, tortoiseshell Eyewear offer excellent practicality: they won’t easily slip off when sweating and are hypoallergenic. Thanks to their hard material, they are suitable for long-term wear and resistant to deformation, combining beauty with durability.
Notably, tortoiseshell cannot be directly used to make Eyewear. A finished pair of tortoiseshell Eyewear is meticulously carved from a flat tortoiseshell plate roughly the size of a pencil case and 5 millimeters thick with each step embodying the craftsman’s dedication.

A unique characteristic of tortoiseshell is its ability to achieve biological bonding under specific pressure and temperature, resulting in seamless, traceless finished products. Lighter and more translucent tortoiseshell is particularly rare and valuable, as this coloration only grows on the tail shell of the tortoise, covering an area no larger than half a palm. For the natural alternating light and dark patterns, craftsmen must first align the grain to ensure balanced patterns before bonding.

Material Challenges
Due to restrictions imposed by international conventions, the use of tortoiseshell is no longer as unrestricted as it once was. Since golden-yellow tortoiseshell material is extremely scarce, manufacturers will increasingly use dark-colored tortoiseshell sheets from existing inventories for production in the future.

China has a long-standing tradition of making Eyewear from tortoiseshell. Beyond its aesthetic appeal, tortoiseshell’s structure is similar to human nails and hair (it emits a hair-burning odor when ignited), ensuring a close fit with the skin. It won’t slip when sweating, is hypoallergenic, and its hardness guarantees that the frames remain undistorted for years truly a gift from nature.

With the development and application of new material technologies, tortoiseshell-patterned Eyewear made from cellulose acetate have become a perfect alternative to natural tortoiseshell frames. This alternative material not only offers stable performance but also replicates tortoiseshell’s texture and color with remarkable authenticity. It satisfies people’s love for tortoiseshell style while complying with environmental and regulatory requirements. Additionally, as jelly-colored cellulose Acetate Eyewear have become over-saturated in the market, leading to aesthetic fatigue, the classic texture and natural charm of tortoiseshell-patterned cellulose acetate eyewear are ushering in a new wave of market growth.

As a professional eyewear supplier, we are specialize in acetate eyewear and metal eyewear and buffalo horn eyewear.