Dia Glasses (Metal / Memory Plastic) (51size) 51□21 149
- Free Delivery: Economy $70+ / Express $110+
- Authenticity: Guaranteed
- No Tax: No tax needed (VAT may apply in EU)
- Freebies: Free lens case
- Safety Guaranteed: Certified Lenses
All lenses are safety-certified by US FDA (USA), Health Canada (Canada), KDFA (Korea) and CE 1023 (EU).
🔍 Understanding Lens Indices and Prescriptions 🔍
Your lens index choice significantly impacts your glasses' comfort and appearance. Higher indices mean thinner, lighter lenses - especially important for strong prescriptions.
📊 Lens Indices and SPH Ranges:
- 1.56 Index:SPH 0.00 to -/+2.00
- 1.61 Index:SPH -/+2.25 to -/+4.00
- 1.67 Index:SPH -/+4.25 to -/+5.75
- 1.74 Index:SPH -/+6.00 and above
🎯 Prescription Guide:
- No prescription or SPH 0.00 to -/+2.00: Select 1.56 Blue Light Blocking Lens
- SPH -/+2.25 to -/+4.00: Select 1.61 Spherical Blue Light Blocking Lens
- SPH -/+4.25 to -/+5.75: Select 1.67 Aspherical Blue Light Blocking Lens
- SPH -/+6.00 and above: Select 1.74 Aspherical Blue Light Blocking Lens
🔎 Available Lens Types:
- 1.56 Blue Light Blocking Lens: Standard blue light blocking lens for low prescriptions
- 1.61 Spherical Blue Light Blocking Lens: Spherical design for medium prescriptions
- 1.67 Aspherical Blue Light Blocking Lens: Advanced aspherical design for higher prescriptions
- 1.74 Aspherical Blue Light Blocking Lens: Premium aspherical design for very high prescriptions
✨ All Lenses Include:
- 💻 Blue light blocking technology
- ☀️ UV protection
- ✨ Anti-reflective coating
- 🛡️ Scratch-resistant coating
⚠️ Note: Please ensure you select the appropriate lens index for your prescription. Incorrect selection may result in thicker, heavier glasses that affect comfort and appearance. Contact us if you need guidance before ordering.
How To Measure Your PD
How to Measure Your Pupillary Distance (PD)
Measuring your PD at home is simple! Here's our step-by-step guide.
What you'll need:
- A ruler (with millimeter markings)
- A mirror
Steps:
- Position yourself about 8 inches from the mirror.
- Hold the ruler horizontally against your forehead, just above your eyes.
- Keep your right eye closed and align the 0mm mark of the ruler with the center of your left pupil.
- Keeping the ruler steady, switch eyes - open your right eye and close your left eye.
- The number that lines up with the center of your right pupil is your PD measurement.
For reading glasses: subtract 3mm from your measured PD when placing your order.
Pro Tips for Accurate Measurement:
- Take multiple measurements throughout the day and use the average
- Get assistance from a friend for better accuracy
- When measuring, fix your gaze on a distant point (at least 20 feet away)
- If a friend is helping, they should stand to the side to avoid interfering with your line of sight
A precise PD measurement ensures your new glasses will be perfectly aligned with your eyes!
Note: While measuring your PD at home is convenient, you can always visit an eye care professional for the most accurate measurement.
Why Choose Our Lenses? – All-Inclusive: 💻 Blue Light | ☀️ UV | ✨ Anti-Reflective | 🛡️ Scratch-Resistant
All Lenses Include:
- 💻 Blue light blocking technology
- ☀️ UV protection
- ✨ Anti-reflective coating
- 🛡️ Scratch-resistant coating
Our lenses come with all these features at no extra cost, unlike other retailers where you have to pay more for these essential features!
Should I Get Blue Light Blocking Lenses?
What Are Blue Light Blocking Lenses?
Blue light blocking lenses filter harmful blue light emitted from digital screens, helping protect your eyes and improve your sleep quality.
Key Benefits:
- Reduced Eye Strain: Minimize discomfort during extended screen time.
- Improved Sleep: Block blue light that disrupts melatonin production and sleep cycles.
- Color Clarity: Virtually clear lenses avoid color distortion, unlike yellow or amber-tinted alternatives.
Is It Right for You?
If you spend hours on screens—working, gaming, or watching shows—blue light blocking lenses are ideal for reducing eye fatigue and helping you relax at night.
Note: A slight blue-tinted reflection is normal with these lenses.
Why Choose Our Lenses?
Unlike many retailers, all our lenses come with blue light blocking technology at no additional cost. It's a standard feature included to ensure your eyes are protected!
What do I need to order new glasses online?
To order glasses that suit you well and match your prescription accurately, here's what you'll want:
- A valid eyeglasses prescription from your eye care professional.
- Your pupillary distance (PD)—if it's not on your prescription, you can measure it with a simple tool or an online guide.
- A well-fitting pair of glasses (optional)—check the numbers on the frame's arm or bridge if you want a size reference.
What is PD, and where can I find mine?
PD (Pupillary Distance) is the measurement (in millimeters) between the centers of your pupils. It's crucial for aligning lenses correctly in front of your eyes.
If your prescription doesn't include a PD:
- You might have a contact lens prescription, which often doesn't list PD since it's unnecessary for contacts.
- Your eye doctor or optician may have left it out if they assumed you'd buy glasses directly from them. In that case, you can measure it yourself at home following a simple guide, or you can ask your eye care professional to provide it.
How long does it take for prescription glasses to ship?
Glasses with prescription lenses require some extra time to custom-craft and mount. Generally:
- Processing: Around 3–4 business days to make your lenses, fit them to the frame, and pack your order.
- Shipping: Economy Shipping typically takes 10–20 business days (excluding weekends/holidays), while Express Shipping takes only 2–6 business days.
If you opted for non-prescription frames, they typically ship faster since no custom lens work is needed.
| Model | Dia |
|---|---|
| Lens width | 51 mm |
| Lens height | 44 mm |
| Bridge | 21 mm |
| Frame width | 146 mm |
| Temple length | 149 mm |
| Material | Metal / Memory Plastic |
| Shape | Browline |
Dia Glasses (Metal / Memory Plastic) (51size) 51□21 149
- Free Delivery: Economy $70+ / Express $110+
- Authenticity: Guaranteed
- No Tax: No tax needed (VAT may apply in EU)
- Freebies: Free lens case
- Safety Guaranteed: Certified Lenses
All lenses are safety-certified by US FDA (USA), Health Canada (Canada), KDFA (Korea) and CE 1023 (EU).
🔍 Understanding Lens Indices and Prescriptions 🔍
Your lens index choice significantly impacts your glasses' comfort and appearance. Higher indices mean thinner, lighter lenses - especially important for strong prescriptions.
📊 Lens Indices and SPH Ranges:
- 1.56 Index:SPH 0.00 to -/+2.00
- 1.61 Index:SPH -/+2.25 to -/+4.00
- 1.67 Index:SPH -/+4.25 to -/+5.75
- 1.74 Index:SPH -/+6.00 and above
🎯 Prescription Guide:
- No prescription or SPH 0.00 to -/+2.00: Select 1.56 Blue Light Blocking Lens
- SPH -/+2.25 to -/+4.00: Select 1.61 Spherical Blue Light Blocking Lens
- SPH -/+4.25 to -/+5.75: Select 1.67 Aspherical Blue Light Blocking Lens
- SPH -/+6.00 and above: Select 1.74 Aspherical Blue Light Blocking Lens
🔎 Available Lens Types:
- 1.56 Blue Light Blocking Lens: Standard blue light blocking lens for low prescriptions
- 1.61 Spherical Blue Light Blocking Lens: Spherical design for medium prescriptions
- 1.67 Aspherical Blue Light Blocking Lens: Advanced aspherical design for higher prescriptions
- 1.74 Aspherical Blue Light Blocking Lens: Premium aspherical design for very high prescriptions
✨ All Lenses Include:
- 💻 Blue light blocking technology
- ☀️ UV protection
- ✨ Anti-reflective coating
- 🛡️ Scratch-resistant coating
⚠️ Note: Please ensure you select the appropriate lens index for your prescription. Incorrect selection may result in thicker, heavier glasses that affect comfort and appearance. Contact us if you need guidance before ordering.
How To Measure Your PD
How to Measure Your Pupillary Distance (PD)
Measuring your PD at home is simple! Here's our step-by-step guide.
What you'll need:
- A ruler (with millimeter markings)
- A mirror
Steps:
- Position yourself about 8 inches from the mirror.
- Hold the ruler horizontally against your forehead, just above your eyes.
- Keep your right eye closed and align the 0mm mark of the ruler with the center of your left pupil.
- Keeping the ruler steady, switch eyes - open your right eye and close your left eye.
- The number that lines up with the center of your right pupil is your PD measurement.
For reading glasses: subtract 3mm from your measured PD when placing your order.
Pro Tips for Accurate Measurement:
- Take multiple measurements throughout the day and use the average
- Get assistance from a friend for better accuracy
- When measuring, fix your gaze on a distant point (at least 20 feet away)
- If a friend is helping, they should stand to the side to avoid interfering with your line of sight
A precise PD measurement ensures your new glasses will be perfectly aligned with your eyes!
Note: While measuring your PD at home is convenient, you can always visit an eye care professional for the most accurate measurement.
Why Choose Our Lenses? – All-Inclusive: 💻 Blue Light | ☀️ UV | ✨ Anti-Reflective | 🛡️ Scratch-Resistant
All Lenses Include:
- 💻 Blue light blocking technology
- ☀️ UV protection
- ✨ Anti-reflective coating
- 🛡️ Scratch-resistant coating
Our lenses come with all these features at no extra cost, unlike other retailers where you have to pay more for these essential features!
Should I Get Blue Light Blocking Lenses?
What Are Blue Light Blocking Lenses?
Blue light blocking lenses filter harmful blue light emitted from digital screens, helping protect your eyes and improve your sleep quality.
Key Benefits:
- Reduced Eye Strain: Minimize discomfort during extended screen time.
- Improved Sleep: Block blue light that disrupts melatonin production and sleep cycles.
- Color Clarity: Virtually clear lenses avoid color distortion, unlike yellow or amber-tinted alternatives.
Is It Right for You?
If you spend hours on screens—working, gaming, or watching shows—blue light blocking lenses are ideal for reducing eye fatigue and helping you relax at night.
Note: A slight blue-tinted reflection is normal with these lenses.
Why Choose Our Lenses?
Unlike many retailers, all our lenses come with blue light blocking technology at no additional cost. It's a standard feature included to ensure your eyes are protected!
What do I need to order new glasses online?
To order glasses that suit you well and match your prescription accurately, here's what you'll want:
- A valid eyeglasses prescription from your eye care professional.
- Your pupillary distance (PD)—if it's not on your prescription, you can measure it with a simple tool or an online guide.
- A well-fitting pair of glasses (optional)—check the numbers on the frame's arm or bridge if you want a size reference.
What is PD, and where can I find mine?
PD (Pupillary Distance) is the measurement (in millimeters) between the centers of your pupils. It's crucial for aligning lenses correctly in front of your eyes.
If your prescription doesn't include a PD:
- You might have a contact lens prescription, which often doesn't list PD since it's unnecessary for contacts.
- Your eye doctor or optician may have left it out if they assumed you'd buy glasses directly from them. In that case, you can measure it yourself at home following a simple guide, or you can ask your eye care professional to provide it.
How long does it take for prescription glasses to ship?
Glasses with prescription lenses require some extra time to custom-craft and mount. Generally:
- Processing: Around 3–4 business days to make your lenses, fit them to the frame, and pack your order.
- Shipping: Economy Shipping typically takes 10–20 business days (excluding weekends/holidays), while Express Shipping takes only 2–6 business days.
If you opted for non-prescription frames, they typically ship faster since no custom lens work is needed.
| Model | Dia |
|---|---|
| Lens width | 51 mm |
| Lens height | 44 mm |
| Bridge | 21 mm |
| Frame width | 146 mm |
| Temple length | 149 mm |
| Material | Metal / Memory Plastic |
| Shape | Browline |