Protective Eyewear Is Indispensable in Numerous Scenarios

Eye protection is not merely about wearing contact lenses or eyeglasses for vision correction. The type of eye protection required depends on the activity you are engaged in. Your regular eyeglasses cannot shield your eyes from impacts, debris, or damage. In fact, some eyeglasses may shatter if damaged, causing further eye injuries.

For most household maintenance projects and activities, standard ANSI-approved protective eyewear is sufficient. In many work situations, the same level of protection used at home will suffice, but you need to be aware of some important exceptions. Sports goggles should meet the specific requirements of the sport; these requirements are typically established and certified by sports governing bodies and the American Society for Testing and Materials (ASTM).

Eyewear with the Embossed ANSI Mark
The American Academy of Ophthalmology and the American Society of Ocular Trauma recommend that every household keep at least one pair of ANSI-approved protective eyewear on hand for projects or activities that pose a risk of eye injury at home.

Choose protective eyewear marked with ANSI Z87.1 on the lenses or frames. This designation indicates that the glasses, goggles, or face shields comply with the American National Standards Institute (ANSI) Z87.1 safety standard. ANSI-approved protective eyewear is readily available at most hardware stores nationwide.

Activities That Require Eye Protection
Exposure to hazardous chemicals or other substances that may damage the eyes upon contact
Presence of flying debris or other small particles that may strike participants or bystanders
Risk of projectiles or objects becoming airborne and accidentally entering the eyes
Bottom line: Use common sense, especially when children are around. You should protect them and set an example by making informed choices.

Gas Welding Goggles
The eye protection required for safe work is determined by the Occupational Safety and Health Administration (OSHA). To learn about the applicable standards, consult your company’s human resources department or the personnel responsible for overseeing OSHA compliance.

For operations other than welding, additional eye and face protection is required. Per OSHA standards, the goggles used must be ANSI-certified, adhering to the same protection standards applicable for household use.

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

Principles of Radiation Protective Glasses

A large number of students and office workers wear thick glasses, mostly due to prolonged exposure to electronic screens. For this reason, a suitable pair of radiation-protective lenses is indispensable. But what is the working principle behind these glasses?

Radiation-protective glasses are designed to shield the eyes from damage caused by excessive ultraviolet rays and other forms of radiation. The lenses are made of special glass that can reflect or absorb radiation while allowing a certain amount of visible light to pass through. They are coated with a shiny metallic film of chromium, nickel, mercury, silver, or other metals to reflect radiation. Blue lenses absorb infrared rays; yellow-green lenses absorb both ultraviolet and infrared rays; and lead-containing clear lenses absorb X-rays and gamma rays. Take welding glasses for example, they have relatively low light transmittance requirements, so their lenses are mostly dark-colored. Laser-protective glasses, as the name implies, are engineered to block laser radiation, which places high demands on the lenses. Factors such as light source compatibility, attenuation rate, light response time, optical density, and light transmission effect all matter. Different nanometer (nm) lasers require lenses with corresponding wavelength bands.

Features of Radiation-Protective Glasses
Flat lenses, no side effects on vision Crafted using advanced vacuum ion plating technology, these lenses can block 100% of electromagnetic radiation.

Radiation-resistant material composition
The lenses contain radiation-blocking substances that absorb low-frequency microwave radiation, eliminating potential eye discomfort caused by electromagnetic waves, such as eye fatigue, headache, soreness, and dryness.

Selective light transmission and absorption
The lenses exhibit differential penetration and absorption capabilities for various light rays, offering anti-reflective and glare-reducing properties. Users will notice significantly clearer and more natural vision when wearing them.

Ideal for specific user groups
Especially suitable for computer professionals, TV viewers, and video game players, these glasses effectively block harmful light from damaging the eyes, ensuring long-term visual health.

How to Identify Authentic Radiation-Protective Glasses
Check the coating layer Radiation-protective lenses are coated with a colored anti-radiation film, which can be blue, green, golden, or other hues. Blue-green coatings are standard anti-radiation layers, with a radiation-blocking rate of approximately 50% as verified by national testing standards. High-performance golden coatings incorporate special silver oxide components, achieving a radiation-blocking rate of up to 90% according to national certification.

Test by wearing them while using a computer
Put on the glasses and experience the difference when looking at a computer screen. Without radiation-protective glasses, the display may appear harsh on the eyes and slightly flickering. In contrast, wearing authentic radiation-protective glasses will deliver noticeably clearer and more natural visual comfort.

Prolonged use of mobile phones, computers, and similar electronic devices often leads to eye strain and dryness, making radiation-protective glasses a necessity for many people. However, we would like to offer a friendly reminder: always purchase these glasses from authorized physical stores or Eye Clinics after getting a professional eye exam and prescription.

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

Anti-Fogging for Eyeglass Lenses Is a Must in Winter

As a seasoned glasses wearer, I have to complain about the weather in my country, we can experience spring, summer, and autumn all in one week, then abruptly plunge into winter like a rollercoaster ride before we’re ready. And my glasses? They’re totally unprepared for this!

You might wonder: what preparation do glasses need?The answer is anti-fogging. The biggest feature of winter is the extreme temperature difference between indoor and outdoor environments. On the first morning after the temperature dropped, I noticed a thin layer of fog on the glass windows and eyeglass lenses are certainly not immune to this fogging nightmare in winter.

Why Do Lenses Fog Up?
In cold environments, the air is obviously dry. When lenses come into contact with warm air (which contains more moisture), a condensation effect occurs upon contact with the cold lens surface. Tiny water droplets form on the lens, causing it to fog up.

This phenomenon is generally not dangerous, but you need to exercise caution when opening car doors. In summer, car air conditioners are usually running, making fogging a common issue. In winter, car windows stay closed, creating a temperature gap with the outside. Always be mindful of safety when opening the car door.

What to Do When Lenses Fog Up?
The first step to tackle lens fogging is to prevent it in advance. Here are a few effective anti-fogging tips:
Lens Anti-Fog SprayClean the lenses thoroughly first. Then spray a lens-specific anti-fog spray evenly on the surface and wipe it gently. The anti-fog effect typically lasts 1–2 days.
Anti-Fog Microfiber ClothThis is a specially treated cloth. Wipe the lens surface repeatedly with it to activate the anti-fog function. After use, store the cloth in an airtight bag to prevent the anti-fog properties from wearing off.

Soap or Dish SoapApply a tiny amount of soap or dish soap to a clean cloth, then wipe the lens surface lightly. This also works as a temporary anti-fog solution.
Anti-Fog LensesThere are specially designed anti-fog lenses available. You can directly opt for these when getting a new pair of optical frame. they are convenient and provide a permanent anti-fog effect.

Recommendations for Anti-Fog Lenses
There are two main types of anti-fog lenses:
Type 1: Activated by Anti-Fog ClothThese lenses rely on an anti-fog cloth to activate the anti-fog agents on the lens surface. When the anti-fog effect fades, simply re-wipe the lenses with the cloth to reactivate it.

Type 2: Hydrophilic Anti-Fog Coated Lenses
These lenses are coated with a highly absorbent, dense, hydrophilic anti-fog film. This film forms a protective layer on the lens surface, effectively eliminating fogging issues.

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

Can oversized eyewear Deform the Nasal Bridge and Trigger Rhinitis?

Can oversized eyewear frames deform the nasal bridge and trigger rhinitis? Adults are unaffected, but adolescents should avoid wearing them, this claim is somewhat of an overstatement. Generally speaking, the nasal structure of adults is fully developed, and the nasal bones can bear a certain amount of weight. Simply put, although oversized eyewear frames are considerably heavier than regular ones, they are not heavy enough to deform the nasal bridge or even obstruct nasal ventilation. As for triggering rhinitis, there is no basis for this assertion at all.

For adults, wearing heavy oversized eyewear frames will only cause mild discomfort to the nose. However, adolescents’ nasal cavities are still in the developmental stage, their bones are relatively fragile and not yet fully ossified, meaning the impact will be more significant, so they are better off not wearing such eyewear frames. Additionally, people with nasal injuries should also refrain from using oversized eyewear frames.

For purely aesthetic purposes, it is best to wear frame-only glasses. Some young people with normal vision wear oversized eyewear frames just for style, some of these optical frame have plano lenses, while others are completely lensless. Does this have any impact on the eyes? According to an professioncal eyewear supplier-Aoker eyewear, even though plano lenses have no optical power, they are essentially an “obstacle” for the eyes. If dust accumulates on the lenses, it will still exert a certain negative effect on eyesight.

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

Are Blue Light Blocking Glasses Suitable for Your Child?

Enhance the blue light filtering capability of your child’s lenses with blue light blocking glasses, and avoid the embarrassment of them having to wear prescription glasses at a young age. The Blue Block Coating on blue light blocking lenses is a high-performance lens coating designed to neutralize the harmful emissions from computers, mobile phones, and tablets, the digital devices your child interacts with every day. These emissions are not only linked to the onset of myopia in children, but also put your child at risk of developing computer vision syndrome.

Does your child text messages while watching TV? The harsh glare from using one, two, or even three screen devices simultaneously can exhaust your child’s eyes. The Blue Block Coating is engineered to help your child’s eyes adapt to harsh light conditions, so their eyes won’t feel strained when they text their friends about yesterday’s pop quiz.

Two hours of “screen time” is by no means harmful, but according to a recent report, the average child actually spends approximately 6 hours per day on screen devices, both at school and at home. Lenses protected by Blue Block Coating allow your child to stay focused and relaxed during computer classes or while unwinding.

Intense gaming requires high levels of concentration, which can cause your child to overfocus on small, hard-to-see areas, known triggers of headaches and eye strain. Specially designed digital lenses can help your child’s eyes adjust effortlessly to harsh light, letting them game comfortably for hours on end.

How much time do they spend on Tiktok, Facebook, Instagram every day? Most children are unaware of how much time they spend glued to their phones, which may lead to blurred vision. The Blue Block layer acts as an anti-reflective barrier, effectively neutralizing harmful blue light emissions.

As a processional eyewear supplier, we are specialize in blue light blocking eyewear, acetate eyewear and metal eyewear and buffalo horn eyewear.

Working Principles of Traditional and Digital Progressive Lenses

Traditional progressive lenses are made from semi-finished lens blanks with no cylindrical power (spherical power) on the front surface. Instead, spherical power is added to the back surface. However, this type of progressive lens is becoming obsolete, as it is less accurate than other available alternatives. The corridor (the area of the lens that corrects vision) is relatively narrow.
Digital progressive lenses this lens design delivers an optimal optical field of view when tailored to the wearer’s optical needs. Digital lens surfacing technology is primarily applied to progressive prescription lenses.

These digital progressive lenses feature wider zones for distortion-free near vision and distance vision. Another advantage of digital progressive lenses is high-definition vision in the intermediate zone (between near and distance vision). This enhanced visual performance is highly beneficial for computer work and other daily activities.

Digital lenses are computer-designed to achieve maximum clarity and accuracy. They are now more frequently recommended by optometrists than traditional alternatives due to their numerous benefits. One key advantage is that these lenses are custom-surfaced based on the wearer’s specific prescription, frame dimensions, and fitting position.

These factors are crucial for precise vision correction, owing to the lens design. Since the same optical frame may sit higher on one wearer’s face and lower on another’s, precise specifications and measurements are essential to ensure optimal comfort and optical performance. Progressive lenses optimized for computer use also feature wider, more precise corridors, resulting in improved peripheral vision. Additionally, digital free-form progressive lenses incorporate technology that reduces edge blur in the peripheral visual field.

The core difference between digital and traditional progressive lenses lies in the ability to customize the lens zones for individual wearers. Digital progressive lenses are calibrated to the wearer’s facial structure and eye positions to ensure the most accurate prescription correction.

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

How to Choose Reading Glasses for First-Time Presbyopia Sufferers?

Presbyopia refers to the difficulty in focusing on nearby objects that occurs at a certain age. It is a natural phenomenon of age-related decline in human bodily functions, which typically manifests in most people between the ages of 40 and 45. Symptoms include blurred vision when viewing small text sufferers have to hold mobile phones or newspapers at arm’s length to read clearly. Vision tends to be sharper in well-lit environments, and the distance required to view a mobile phone screen increases progressively with age.

Once presbyopia sets in, wearing a pair of reading glasses is essential to alleviate eye fatigue. For those buying reading glasses for the first time, here are key guidelines for selection:

Opt for relatively wide lens shapes
Due to the convergence effect of the eyes when focusing on near objects, combined with reading and writing habits, the visual axis of each eye shifts downward and inward by 2.5 mm on the lens when viewing close-up objects, compared to the position when looking straight ahead at distant objects. Since the pupils are generally aligned with the horizontal midline of the lens during straight-ahead vision, the lens must be wide enough to ensure an adequate field of view for near vision. Specifically, the vertical height of the lens should be more than 30 mm contrary to the misconception that smaller lenses are better. Narrow lenses with a vertical height of less than 25 mm are designed for portable, temporary vision correction only.

Choose optical frame with a wide front but a small optical center distance (OCD)Most presbyopia sufferers are middle-aged or older, with fuller facial contours. As such, the horizontal width of reading glass frames is typically 10 mm wider than that of regular eyeglass frames. However, the near pupillary distance is 5 mm shorter than the distance pupillary distance. Therefore, the recommended optical center distance (OCD) ranges from 58–61 mm for women and 61–64 mm for men. To meet both the wide frame and small OCD requirements, lenses with a larger diameter must be used, and the optical centers of the lenses need to be significantly inward-shifted during the manufacturing process.

Prioritize durable and sturdy constructionReading glasses are intended for near-vision use. The diopter strength required for presbyopia increases incrementally: starting at +1.00 D (100 degrees) around the age of 40, it needs to be supplemented by +0.50 D (50 degrees) every 5 years thereafter. Additionally, reading glasses are put on and taken off dozens of times more frequently than myopia glasses. For these reasons, the components of reading glasses must be made of robust or high-elasticity materials. The electroplated parts should offer excellent corrosion and scratch resistance, and the lenses must undergo a high-quality hardening process. Overall, a qualified pair of reading glasses should maintain its shape, resist rust, and avoid severe scratching for at least 2 years of use. In fact, these durability requirements make high-quality reading glasses more demanding than comparable frames for prescription eyeglasses.

Selecting the right reading glasses is crucial for first-time wearers, as individual differences are significant. Factors such as height, arm length, eye usage habits, and presbyopia diopter strength vary from person to person. The diopter may even differ between the left and right eyes. Furthermore, some people may have concurrent vision issues such as hyperopia, myopia, or astigmatism alongside presbyopia. Wearing ill-fitted reading glasses for an extended period will not resolve vision problems; instead, it may cause eye strain, swelling, or headaches.

Therefore, when presbyopia symptoms emerge, it is advisable to first undergo a professional eye exam at a formal ophthalmology clinic or optical frame store. Finally, select reading glasses tailored to your specific eye condition. Never settle for inferior, cheap reading glasses out of convenience or cost-saving considerations.

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

Wooden eyewear: An Understated Elegance

In crafting each piece, wooden eyewear adhere to a people-oriented philosophy, delivering exclusive charm to those who appreciate them. Amid the prevailing trend of fast fashion, wooden eyewear blaze a unique trail in design infusing classic Japanese traditional aesthetics into every wooden frame and refining each pair with meticulous craftsmanship.

From their initial purpose of vision correction, eyewear have evolved into a statement of fashion and a symbol of identity. In interpersonal interactions, the face is the first thing that leaves an impression, and eyewear have thus become a key element in enhancing that all-important first impression.
The sandalwood series stands as the iconic founding collection of the brand, carving out a niche in an era dominated by metal eyewear. Precious sandalwood raw materials, after undergoing manual shaping and delicate polishing, exude a primal, natural beauty. Distinctive, regular wood grain patterns and a subtle, unique woody fragrance define the signature characteristics of the sandalwood series.

The rigorous selection process for sandalwood eyewear begins at the source of raw materials:The sandalwood used is sourced from 100-year-old red sandalwood trees in Indonesia, with each piece of timber air-dried naturally for no less than 5 years. Such red sandalwood is rare and precious, and its natural properties are preserved to the utmost during processing, featuring precision cutting and artisanal handcrafting. The combination of red sandalwood and β-titanium offers exceptional performance: ebony sandalwood frames resist fading even with long-term wear, boasting a smooth, delicate, and warm texture; β-titanium is hypoallergenic, lightweight, sweat-resistant, and corrosion-resistant, ensuring skin-friendly comfort and flexibility. The classic semi-rimless frame design eliminates the visual bulkiness often associated with wooden frames, providing a comfortable fit while exuding an air of refined elegance and poise.

The temples of wooden eyewear are crafted from solid, natural red sandalwood most notably, they are remarkably lightweight. Made from a single piece of timber with no splicing or gaps, the temples feature a smooth, burr-free surface. Their curvature is ergonomically designed to fit the face contour perfectly, avoiding pressure on the ears and ensuring superior wearing comfort. The ends of the temples are thoughtfully widened and hand-polished again, resulting in a bright, lustrous, and layered finish that not only maintains balance but also enhances anti-slip performance.

In the selection of nose pads, wooden eyewear break away from traditional silicone options. Silicone nose pads are prone to yellowing, greening, cracking, and difficult cleaning over prolonged use, requiring regular replacement. Instead, three-dimensional wooden nose pads are adopted to maintain the overall coherence of the eyewear from the inside out. Precision-engineered to match the curvature of the nasal bridge, these wooden nose pads elevate the wearing experience to a new level. With long-term wear, they retain their pristine condition and develop a richer, more radiant luster over time.

The sandalwood eyewear is equipped with custom OBE spring hinges from Germany sturdy yet flexible, built to stand the test of time. They fit securely without pinching wider faces and stay in place without slipping off narrower ones, making them suitable for people with various face shapes. Snugly fitting the facial contours for optimal comfort, the exceptional quality of these eyewear truly lies in the details.

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

What Are the Differences Between Reading Glasses Priced at 10 USD and 50 USD?

According to incomplete statistics, the myopia rate among adolescents in China has been on the rise, and a growing number of teenagers have to wear glasses. However, besides adolescents, there is another group of people who need glasses senior citizens. As people age, they develop presbyopia and thus require reading glasses. Reading glasses are available not only in optical frame stores but also at street stalls, yet there is a huge price disparity: a pair costs just 10 USD at street stalls but hundreds of USD in optical frame stores. So, what are the differences between reading glasses priced at 10 USD and 50 USD?

Different Target Consumer Groups
Generally speaking, few elderly people buy glasses in optical frame stores; most customers are middle-aged people purchasing glasses for their parents. In contrast, the majority of buyers at street stalls are elderly people themselves. Due to their life experiences, elderly consumers are reluctant to spend money and think that any product that works just fine is sufficient, which is why they opt for 10-USD reading glasses at street stalls. On the other hand, middle-aged people who buy reading glasses in optical frame stores are more motivated by filial piety, and they also recognize that glasses purchased from optical frame stores come with better quality guarantees.

Different Service Standards
The biggest feature of buying reading glasses at a street stall is that you can try on as many pairs as you like and pay the vendor once you find a pair that suits you. But the experience in an optical frame store is entirely different, you will receive comprehensive and thoughtful service. First, a professional optometrist will conduct a diopter test for you, then recommend the most suitable lens package based on your exact prescription. After selecting the lenses, you can choose from a variety of frames, including metal and plastic options. Only those who have purchased reading glasses from both channels can truly appreciate the stark difference in service quality.

Different Product Grades
Many people who have bought reading glasses for their parents may wonder: The reading glasses sold at street stalls are also branded products, so why are they so cheap? The answer lies in product grading. Generally speaking, the reading glasses sold at street stalls are all low-grade products, with very few mid-to-high-grade options available. In contrast, optical frame stores rarely stock low-grade reading glasses and mainly offer mid-to-high-grade products, which explains the significant price gap between the two.

Therefore, as a professional eyewear supplier, we recommend that you avoid purchasing reading glasses from street stalls. Wearing reading glasses with an incorrect diopter can be detrimental to your eye health. For this reason, it is always advisable to buy reading glasses from a formal optical frame store, where you can receive a professional diopter check and purchase a pair of glasses perfectly tailored to your vision needs.

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

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.