Reading Glasses: A Comprehensive Guide from Science to Selection

Lens Materials: How They Affect Clarity and Durability?

The lens is the core part of reading glasses, and its material directly determines the clarity of vision and the durability of the lens. The characteristics of different lens materials are compared in the following table:

Glass lenses are a traditional lens material. Their light transmittance is as high as over 90% (ordinary glass lenses have a light transmittance of about 91%, and coated optical glass lenses can reach 95%), allowing light to pass through almost unimpeded. Therefore, the imaging is clear with high color reproduction (color difference coefficient less than 2%), enabling text and images to present a real texture. At the same time, the surface hardness of glass lenses is high, with a Mohs hardness of 6-7 (only lower than that of diamonds and corundum), so they are not easily scratched in daily use, and their service life can reach 3-5 years. However, glass lenses also have obvious drawbacks. They have a high density (about 2.5g/cm³), which is about 50% heavier than resin lenses. A pair of ordinary glass lens glasses weighs about 25-30 grams, and long-term wearing will cause greater pressure on the bridge of the nose and ears, especially for presbyopic patients, which may easily lead to soreness of the bridge of the nose, discomfort of the ears and other problems. In addition, glass lenses have poor impact resistance and are easy to break when hit, and the fragments may scratch the eyes. Therefore, except for some special scenarios with high requirements for light transmittance (such as observing precision instruments), the use of glass lenses has gradually decreased.

Resin lenses are currently the mainstream choice in the market. Their density is only 1.3-1.4g/cm³, which is half that of glass, and they are light in weight. A pair of resin lens glasses weighs about 15-20 grams, which hardly burdens the bridge of the nose when worn, making them suitable for long-term reading. The impact resistance of resin lenses is much stronger than that of glass lenses (the impact strength is more than 10 times that of glass), so they are not easy to break even when hit, and are safer. However, the surface hardness of resin lenses is low, with a Mohs hardness of only 2-3. If not properly maintained, they are easily scratched by dust and gravel, affecting light transmittance. It is usually recommended to replace them every 1-2 years. To make up for this defect, most resin lenses are now hardened, forming a layer of silicon oxide protective film on the lens surface, which can increase the hardness to 4-5, improving their scratch resistance. At the same time, resin lenses can also undergo various coating treatments, such as anti-reflection coating (improving light transmittance to 98%) and anti-fouling coating (reducing oil adhesion), to further enhance the user experience.

PC lenses (polycarbonate lenses) are a special type of resin lenses. They have excellent performance in impact resistance, with impact resistance more than 60 times that of glass lenses, making them ideal for children's reading glasses and sports reading glasses. PC lenses are light in weight, with a density of about 1.2g/cm³, about 10% lighter than ordinary resin lenses, and comfortable to wear. However, their light transmittance is slightly lower than that of ordinary resin lenses, about 85%-88%, and their wear resistance is poor (Mohs hardness 2), so more attention should be paid to maintenance - avoid wiping with rough paper towels, and it is recommended to use a special glasses cloth. Another advantage of PC lenses is that they are high-temperature resistant (can withstand 120°C high temperature), not easy to deform, and suitable for use in high-temperature environments.

Special Functional Lenses: Technical Details and Maintenance

In addition to basic materials, there are specialized functional lenses designed for specific needs:

Anti-Blue Light Lenses

These lenses filter 40%+ of harmful 400-450nm blue light, but two technologies differ significantly:

Surface Coating: Uses indium tin oxide (ITO) or cerium oxide films to reflect blue light. Advantages: High transmittance (>90%) and minimal impact on color accuracy. Disadvantages: Film layers wear easily (6-12 month lifespan) with rough handling. Best for short-term use (e.g., students).

Material Integration: Blends blue-light absorbers (e.g., benzotriazole compounds) into resin to absorb blue light. Advantages: Long-lasting (matches lens lifespan, 1-2 years) and scratch-resistant. Disadvantages: Slight yellow tint and 5-10% lower transmittance. Ideal for long-term screen users (e.g., programmers).

Performance Data: A premium material-integrated lens filters 92% of 430nm harmful blue light while retaining 75% of 480nm beneficial blue light (critical for circadian rhythms), outperforming the 60% industry average.

Anti-Ultraviolet (UV) Lenses

These block UVA (320-400nm) and UVB (280-320nm) to protect retinas:

• Basic Standard:UV400-certified lenses block >99% of UVA/UVB, suitable for daily urban use.
• Extreme Environments: High-altitude (≥3,000m), snowy, or coastal areas require "UV400 + polarized" lenses—polarization reduces 90%+ of reflections (e.g., from water/snow) to prevent "snow blindness."

Refractive Index: A Key Factor in Lens Thickness

Resin and PC lenses also vary by refractive index (a measure of how much light bends through the lens), which directly affects thickness and weight—critical for high-presbyopia users (300°+):

Note: Higher refractive index lenses cost 30-50% more but reduce "bulk"—a 1.61 index lens for 400° is 40% thinner than a 1.50 index lens of the same degree.

Material-Specific Maintenance Tips

• Glass Lenses:Avoid extreme temperature changes (e.g., from -10°C outdoors to 25°C indoors) to prevent cracking. Clean with microfiber cloths and glass-specific cleaners (mild alcohol-based) to avoid scratches.
• Resin Lenses: Clean weekly with mild soap (e.g., baby shampoo) to remove oil films—rinse and air-dry; avoid alcohol (damages coatings).
• PC Lenses: Use only soft, dedicated cloths. Store separately from hard objects (e.g., keys) to prevent scratches.

Frame Materials: What Factors Determine Wearing Comfort?

The material of the frame not only affects the appearance and durability of reading glasses but also directly relates to wearing comfort. Its characteristics such as weight, flexibility, and skin-friendliness are all key influencing factors.

Among metal frames, titanium alloy is the first choice of many consumers due to its excellent comprehensive performance. The density of titanium alloy is about 4.5g/cm³, which is only half that of stainless steel. A pair of titanium alloy frames usually weighs 8-12 grams, and wearing them hardly causes pressure on the bridge of the nose and ears. Its tensile strength can reach 1000MPa, with good deformation resistance, and it is not easy to loosen even after long-term use. More importantly, titanium alloy has excellent biocompatibility, with minimal irritation to the skin and an allergy rate of less than 0.1%, making it suitable for long-term wear by people with sensitive skin. However, the elastic modulus of titanium alloy is low, and the adjustment range of the temple is limited. If adjusted improperly, it is easy to break, requiring professionals to operate with special tools.

Pure titanium material has further improved performance on the basis of titanium alloy, with a purity of more than 99%. It is 10%-15% lighter than titanium alloy, has better corrosion resistance, and will not rust even if it is in long-term contact with salt in sweat. However, pure titanium is difficult to process and has a high cost, so it is usually used in high-end frames. Stainless steel frames are more affordable, with high strength (tensile strength of about 500MPa) and wear resistance, but they have a higher density (about 7.9g/cm³). A pair of stainless steel frames weighs about 15-20 grams, and long-term wearing may cause a significant sense of weight on the bridge of the nose. In addition, some stainless steels have a high nickel content, about 10%-18%, and nickel is a common allergen. About 10% of people are allergic to nickel, and wearing such frames may cause redness, itching, and other symptoms on the skin in contact with the frame.

Among plastic frames, TR90 material is known for its excellent flexibility. This polymer material developed by Swiss EMS company has memory elasticity and can withstand 90-degree bending without deformation. The temples can naturally fit the contour of the head, reducing pressure on the temples and behind the ears. The density of TR90 is only 1.1g/cm³, which is 60% of that of traditional acetate fiber. A pair of TR90 frames weighs about 10-15 grams, making them light and comfortable to wear. It has excellent high and low-temperature resistance, and will not embrittle  or crack in the environment of -30℃ to 120℃, making it suitable for use in different climate regions. However, the surface of TR90 has high smoothness and is easy to be contaminated with fingerprints and oil stains, so it needs to be wiped with clean water 1-2 times a week to keep it clean.

Acetate frames are known for their skin-friendliness. They are made of plant cellulose, and the surface is finely polished, with a smooth and delicate touch, and no friction discomfort when in contact with the skin. Acetate has strong color stability, and can present complex patterns such as gradients and tortoiseshell through multi-layer dyeing technology, and is not easy to fade, making it suitable for people pursuing personalization. However, this material has strong hygroscopicity, and may slightly expand in an environment with humidity exceeding 80%, causing the frame to become tight. Therefore, when using in the plum rain season or tropical regions, it is recommended to choose a slightly loose size. In addition, acetate has poor elasticity, and excessive bending of the temples is easy to break, so special care should be taken when adjusting.

Nylon frames are both light and strong, with a density of about 1.14g/cm³, and their impact resistance is 3 times that of acetate, making them suitable for wearing during sports. However, nylon material is sensitive to temperature and easy to deform in high-temperature environments, so it is not suitable for long-term exposure to sunlight.

Silicone material is often used in the nose pads and temple ends of the frame. Silicone nose pads are soft, can fully fit the bridge of the nose, disperse the weight of the frame, and reduce pressure on the bridge of the nose - ordinary plastic nose pads may cause indentations on the bridge of the nose, while silicone nose pads can expand the pressure distribution area by more than 3 times, significantly improving comfort. The silicone sleeve at the end of the temple can increase friction with the back of the ear, preventing the glasses from slipping, especially suitable for use when reading with the head down or during sports. However, silicone is easy to absorb dust and sebum, and needs to be cleaned with a neutral detergent once a month, otherwise, it may breed bacteria and cause skin infections.

Special Functional Materials: How to Improve the User Experience?

Modern reading glasses go beyond basic vision correction—innovative materials are engineered to address specific pain points, from digital eye strain to fit issues. These functional enhancements transform everyday wear into a seamless experience, tailored to diverse lifestyles.

Anti-Blue Light Technology: Beyond Surface Coatings

Resin lenses with anti-blue light properties are a game-changer for digital natives, but their effectiveness depends on the technology used:

• Dual-Layer Coating Systems: Premium lenses combine a surface film (to reflect short-wavelength blue light, 400-430nm) with a substrate additive (to absorb mid-wavelength blue light, 430-450nm). This "double defense" filters up to 60% of harmful blue light while preserving 85% of beneficial blue light (480-500nm), which regulates sleep cycles.
• Color Neutrality: Unlike early anti-blue light lenses with a strong yellow tint, new formulations use nanoscale pigments to reduce discoloration. Users report 30% faster adaptation (typically 3-5 days) compared to older models.
• Screen-Specific Optimization:Lenses for computer users (50-70cm viewing distance) often include a slight power reduction (-50 to -75°) to ease ciliary muscle strain, while phone-specific lenses (30-40cm) prioritize higher blue light filtration (up to 65%) for closer screen proximity.

Trade-off Note: While transmittance is reduced by 5-10%, this is negligible for indoor use—outdoor readers may opt for "day-night" lenses that adjust blue light filtration based on ambient light.

Silicone: More Than Just Softness

Silicone’s role in frames extends far beyond basic comfort; its versatility solves common fit problems:

• Adaptive Nose Pads:Memory silicone pads (used in high-end frames) mold to the nose’s contour within 10 minutes of wearing, distributing weight across 3x more surface area than rigid plastic pads. This eliminates "red nose" marks, even after 8+ hours of wear.
• Temple Grip Systems: Silicone temple sleeves with micro-textured surfaces (resembling tiny suction cups) increase friction by 40% compared to smooth plastic, preventing slippage during activities like bowing your head to reador walking. For athletes, "hydrophobic silicone" repels sweat, maintaining grip in humid conditions.
• Hygiene Innovations: Antimicrobial silicone (infused with silver ions) reduces bacterial growth by 99% on nose pads and temple tips, ideal for shared use (e.g., family reading glasses) or users with sensitive skin prone to irritation.

Maintenance Upgrade: For busy users, silicone accessories can be cleaned in a ultrasonic jewelry cleaner (3 minutes on a low setting) to dislodge embedded dust—more effective than hand-washing for deep grime.

Memory Alloy Temples: Smart Flexibility

Nickel-titanium (NiTi) alloy temples redefine durability, leveraging metallurgy to adapt to user behavior:

• Shape Memory Science:The alloy’s "transition temperature" (35-40°C) is intentionally set near body heat. This means:

• When removed (cooler than 35°C), temples remain malleable—easy to adjust for head size.
• When worn (warmer than 35°C), they revert to their "memory shape," ensuring a consistent fit.
  • Impact Resistance: NiTi temples withstand 500+ bending cycles (90° angle) without permanent deformation, compared to 100-200 cycles for stainless steel. This makes them ideal for children, who often twist or step on glasses.
  • Self-Repairing Design: For minor warps (e.g., from being sat on), soaking in 40°C water isn’t the only fix—some brands use "active memory" alloy that self-corrects within 10 minutes of contact with skin heat, no water needed.

Allergy Consideration: For nickel-sensitive users, NiTi temples with a titanium nitride coating create a barrier between the alloy and skin, reducing allergy risk to 0.05% (vs. 10% for uncoated nickel alloys).

Emerging Innovations: Graphene and Beyond

Cutting-edge materials are pushing boundaries further:

• Graphene-Infused Frames: Graphene’s thermal conductivity (5x higher than copper) dissipates heat from the skin, reducing sweat buildup by 60%—a boon for hot climates or long reading sessions. Blended with TR90, these frames are 20% lighter than standard models.
• Photochromic Lenses with Blue Light Filtering: These lenses darken outdoors (blocking UV and glare) and switch to anti-blue light mode indoors, eliminating the need for separate pairs. The transition takes 30 seconds (faster than traditional photochromics) and works under LED lights.

In essence, special functional materials turn reading glasses into adaptive tools—responding to how you live, work, and see the world. Whether you’re glued to a screen, chasing kids, or reading in the sun, these innovations ensure your glasses keep up with you.

How to Choose Reading Glasses That Suit You?

Choosing reading glasses that suit you is a nuanced process that goes well beyond selecting a visually appealing frame or a basic lens strength. It involves a careful interplay of understanding your eye health, daily habits, and physical comfort—all working together to create a pair of glasses that feel less like a tool and more like a seamless part of your daily life. To find such a pair, you need to look deeper than surface-level features and consider how your eyes function, what activities you use your glasses for, and how different materials interact with your body.

The ideal reading glasses should fade into the background of your day: they shouldn’t cause soreness on your nose after hours of reading a novel, slip down when you lean in to check a recipe, or leave your eyes feeling strained after scrolling through your phone. Achieving this level of comfort requires asking key questions: How do your eyes respond to different magnifications at various times of the day? Do you primarily use your glasses in bright offices, dimly lit rooms, or outdoors? How does your skin react to certain materials—does metal irritate you, or do heavy frames leave marks after extended wear?

Your vision status is the starting point, but it’s rarely uniform. Presbyopia develops differently for everyone, shaped by factors like genetics and lifestyle, so two people of the same age might need very different lens strengths. For instance, someone who reads physical books at arm’s length will require a different prescription than a person of the same age who spends hours looking at a phone just 30 centimeters from their face. If you have refractive errors like astigmatism, this adds another layer of complexity, as generic glasses often can’t accommodate the irregular shape of your cornea.

Your daily activities also play a crucial role in narrowing down the options. A hiker who reads maps outdoors needs glasses with UV protection and a secure fit to stay in place during movement, while a professional who works at a computer all day might prioritize anti-blue light lenses and lightweight frames to avoid distractions. Even small habits matter: if you frequently switch between reading a book and looking at distant objects, progressive lenses could eliminate the hassle of constantly taking your glasses on and off.

The materials used in the glasses are the final piece of the puzzle, bridging functionality and comfort. Titanium frames might be perfect for someone with sensitive skin, as they’re hypoallergenic and stable. For someone who often tosses their glasses into a bag, the flexibility of TR90 frames could be a better choice. Silicone nose pads can evenly distribute weight, preventing red marks, while memory alloy temples ensure durability for those who are prone to dropping or bending their glasses.

In short, choosing the right reading glasses is about finding alignment: between your eyes’ unique needs and the lens technology, between your daily routines and the frame’s design, and between your body’s requirements and the materials that touch your skin. When all these elements come together, your glasses stop being just a necessity—they become a tool that lets you engage with books, screens, and the world around you with clarity, comfort, and focus.

How to Determine the Degree You Need?

Determining the appropriate degree is the first key step in choosing the right reading glasses. Presbyopia, the natural age-related decline in near vision, varies significantly from person to person. It progresses as the eye's lens loses elasticity over time. Although there are general guidelines, individual differences are substantial—factors like genetics, eye health, and long-term habits (such as excessive screen time) can either speed up or slow down this process.

General Degree Guidelines by Age

A rough reference for the progression of presbyopia can help you get a sense of your needs, but it can never replace professional testing:

Why Professional Optometry Matters

Self-diagnosing or relying on over-the-counter "cheater" glasses (one-size-fits-all) is risky. These generic options often have mismatched pupil distances (PD) or the same degree for both lenses, which can lead to eye strain, headaches, or even double vision. Professional optometry ensures:

1.Accurate Degree Measurement

Computerized Refraction: A quick initial test that uses infrared light to measure how light bends in your eyes, providing a baseline degree range.

Subjective Refraction: The "trial lens" stage, where an optometrist adjusts lenses and asks, "Which is clearer?" This takes into account your eyes' unique response to correction, which is crucial for those with astigmatism or uneven vision between the two eyes.

Accommodation Testing: Measures how well your eyes can switch focus between near and far objects—important for deciding whether you need single-vision or progressive lenses.

2.Pupil Distance (PD) Calibration
PD is the distance between your pupils (usually 55–70mm). Lenses must be centered over your pupils to avoid the "prismatic effect," which causes distortion. Custom glasses align the optical center of the lens with your PD, while generic glasses often use a standard 63mm, leading to discomfort for 40% of users.

3.Consideration of Refractive Errors
If you have myopia (nearsightedness) or astigmatism, your reading degree will differ from the "standard" presbyopia range. For example:

A myope with -2.00° vision may only need +1.00° reading glasses (instead of +2.00°) because their distance correction partially offsets presbyopia.

Astigmatism requires cylindrical lenses to correct the irregular corneal shape—generic glasses ignore this, making blurriness worse.

When to Re-Test

Presbyopia progresses gradually, with the degree increasing by approximately 50° every 2–3 years (faster after the age of 60). Schedule re-optometry:

Every 1–2 years for ages 40–60.

Every 6–12 months for ages 60+, as lens hardening speeds up.

Warning Signs Your Degree Is Outdated:

• Squinting to read even when wearing glasses.
• Headaches after reading for 30+ minutes.
• Needing to hold books/phones farther away than usual.

Tips for At-Home Degree Checks (Temporary Use Only)

If professional testing isn't immediately accessible, you can use this method to estimate your needs:

1.Print a standard eye chart (available online) and hang it 40cm from your face.

2.Test with over-the-counter glasses in increasing degrees (e.g., +100°, +150°) until the text is clear.

3.Note the lowest degree that works—higher degrees may seem clearer at first but can cause eye strain.

Note: This is a temporary solution. Visit an optometrist within 1–2 weeks for a precise prescription.

By prioritizing professional optometry and understanding how your eyes change with age, you'll avoid the discomfort of ill-fitting glasses and ensure your reading experience remains clear and effortless. Remember: The best reading glasses are those that allow you to focus on the content, not the glasses themselves.

Which Style to Choose for Different Usage Scenarios and Suggestions for Degree Adjustment?

Different usage scenarios are suitable for different styles of reading glasses and degree adjustments, as shown in the following table:

How to Choose Frames According to Face Shape and Skin Type?

Choosing a suitable frame based on face shape and skin type is crucial for both comfort and aesthetics. The right frame can balance facial proportions, enhance features, and minimize irritation—here’s a detailed guide:

Matching Frames to Face Shapes

Facial structure dictates which frame shapes will create harmony. Use these principles to find your best fit:

1.Round Faces

Characteristics: Soft, curved lines with equal width and length (e.g., full cheeks, rounded jawline).

Ideal Frames: Angular or geometric styles (square, rectangular, cat-eye) to add definition. Frames with sharp edges balance the face’s natural softness.

Avoid: Oversized round frames, which can make the face appear wider.

Example: A titanium rectangular frame with a width matching the cheekbones (slightly wider than the face’s widest point) adds structure without overwhelming features.

2.Square Faces

Characteristics: Strong, angular jawlines, broad foreheads, and equal width/length.

Ideal Frames: Round, oval, or soft-edged rectangular frames to soften sharp contours. Curved lines contrast with the jawline for a balanced look.

Avoid: Boxy or overly angular frames, which accentuate harshness.

Example: An acetate oval frame with rounded temples—its smooth lines complement the jawline without clashing.

3.Oblong Faces

Characteristics: Longer than they are wide, with a narrow forehead and chin.

Ideal Frames: Wide frames (width ≈ cheekbone width) to shorten the face visually. Styles with decorative temples or a lower bridge can add horizontal balance.

Avoid: Narrow or small frames, which elongate the face further.

Example: A TR90 square frame with a wide lens (52-54mm) and thick temple details—adds width to counteract length.

4.Heart-Shaped Faces

Characteristics: Wide forehead, high cheekbones, and a narrow chin (like an inverted triangle).

Ideal Frames: Bottom-heavy styles (e.g., aviator, cat-eye with thicker lower edges) to balance the narrow chin. Frames with light-colored temples or details draw focus downward.

Avoid: Top-heavy frames (e.g., thick-rimmed on top), which exaggerate the forehead.

Example: A half-frame with a thin upper rim and thicker lower rim—redirects attention to the mid-face.

5.Diamond-Shaped Faces

Characteristics: High, prominent cheekbones (the widest point), with narrow forehead and chin.

Ideal Frames: Oval or rimless frames to soften cheekbones. Styles with detailed temples add width to the forehead and chin.

Avoid: Oversized frames that overwhelm the narrow jawline.

Example: A rimless titanium frame with decorative temples—minimizes focus on cheekbones while adding balance.

Key Fit Tips for All Shapes:

• Frame width should align with the widest part of your face (usually cheekbones) to avoid a "too tight" or "too loose" look.
• Temple length: The end should curve gently around the ear, extending 2-3cm past the earlobe without pressing against the skull.
• Bridge fit: Nose pads should rest evenly on the nose without pinching or leaving gaps (adjustable pads work best for irregular nose shapes).

Matching Frames to Skin Types

Skin type influences which materials will feel most comfortable and reduce irritation:

1.Sensitive Skin

Concerns: Prone to redness, itching, or rashes from metal alloys or harsh plastics.

Best Materials:

Titanium alloy or pure titanium: Hypoallergenic (allergy rate <0.1%) and chemically stable—ideal for daily wear.

Acetate: Plant-based, smooth, and free of nickel (a common irritant in stainless steel).

Avoid: Stainless steel with high nickel content (10-18%) or low-quality plastics (may leach chemicals).

2.Oily Skin

Concerns: Excess sebum can cause frames to slip; oil buildup may damage porous materials.

Best Materials:

TR90: Smooth, non-porous surface resists oil adhesion—easy to wipe clean.

Silicone-tipped temples: 增加 friction to prevent slipping, even with sweat.

Avoid: Porous acetate (traps oil) or uncoated metals (may corrode from sebum).

3.Dry Skin

Concerns: Friction from frames can cause flaking or irritation on the nose and behind the ears.

Best Materials:

Silicone nose pads: Soft, flexible, and reduce pressure points—prevents chafing on dry nasal bridges.

Full-frame designs: Distribute weight more evenly than rimless styles, reducing localized friction.

Avoid: Hard plastic nose pads or tight temples (may worsen dryness by rubbing).

4.Combination Skin

Concerns: Oily T-zone (forehead, nose) with dry cheeks—needs balanced moisture resistance and comfort.

Best Materials:

Titanium frame with silicone nose pads: Combines hypoallergenic metal (for cheeks) with oil-resistant silicone (for the nose).

Matte-finish acetate: Less slippery than glossy styles, with moderate oil resistance.

By aligning frame shape with your facial structure and material with your skin’s needs, you’ll achieve a look that’s both flattering and comfortable—proving that functionality and style can always go hand in hand.

What Details Should Be Paid Attention to During Trial Wearing?

The trial wearing process cannot be ignored, and there are many details to pay attention to. During trial wearing, first observe the clarity of vision. The edges of the text should be sharp without double images, and long-term gazing (more than 5 minutes) should not cause eye swelling or dizziness. Secondly, feel the weight distribution. The center of gravity of the frame should fall evenly on the bridge of the nose and behind the ears. The glasses should not slip when bowing the head, and there should be no obvious shaking when shaking the head.

Troubleshooting Discomfort:

• Dizziness: Likely due to excessive degree or pupil distance (PD) mismatch (>3mm). Try reducing by 25° or rechecking PD (tolerance: ≤2mm).
• Ear pain:Temple angle too steep (ideal: 15° with ear). Adjust with heat (60°C for TR90) to reshape.
• Blurry edges:Optical centers misaligned—re-measure PD and realign lenses.

How to Balance Price and Quality?

It is also important to balance price and quality.

It should be noted that excessive pursuit of low prices should be avoided. The dispersion phenomenon of inferior lenses will cause colored halos on the edges of the text, and long-term use may accelerate vision loss - test data shows that the dispersion coefficient (Abbe number) of inferior lenses is usually lower than 30, while that of qualified lenses should be above 35.

User-Specific Recommendations

• Seniors (60+): Prioritize "pure titanium frames + 1.61-index resin lenses" (total weight <15g) with adjustable silicone nose pads. Opt for 25-50° lower than optometry degrees to reduce strain
• Young Adults (20-40, digital eye strain):Choose "anti-blue light progressive lenses" (upper: 0° for distance; lower: 50-100° for phones) with TR90 frames to ease ciliary muscle fatigue.

In conclusion, reading glasses play an important role in our lives. Understanding relevant knowledge and choosing the one that suits you can make us enjoy reading and life more easily. The core of choosing reading glasses is "accurate matching" - the degree fits the vision needs, the style adapts to the usage scenario, and the material is suitable for personal physique. Only through professional optometry, scenario-based screening and careful trial wearing can we find the ideal choice that is both "clear to see" and "comfortable to wear".