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RR0032309 | Saleme Tortoise TR90 Lightweight Blue Light Filtering Computer Glasses

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Tortoise
$4.00$19.99
4*Interest-free
Worry-free delivery™
1-Year Warranty
30-Day Promise
30-Day Returns
Transparent cost breakdown of premium materials and design. Figures are approximate.
  • Size & Details | Wide
  • Reviews (0)
  • Frame Selection Guide
  • Shipping & Returns
  • FAQ
Here are the three standard sizes we offer at ELKLOOK. Each size is associated with the width of the frame itself.
How to Measure Own Face Width
How to Measure PD
SizeFrame Width (mm)
Narrow≤128mm
Medium129-138mm
Wide≥139mm
49mm45mm49mm133mm21mm145mm
  • SKU : RR0032309
  • Shape : Round
  • Weight : 18.8g
  • Frame size : Medium
  • Material : TR90
  • Spring hinge : NO

These tortoise TR90 computer glasses are ultra-light and flexible, very comfortable for all-day wear. They block blue light and screen glare to reduce eye fatigue. Retro and practical for work, study or daily use, unisex style. Clear lenses can be customized with prescription and functional lenses.

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01 | About Decentration Amount (LDA)
Formula: (ab-PD)/2 =LDA
LDA = 0：Perfect fit ; 0 < LDA < 3mm：Ideal range; 3mm ≤ LDA ≤ 5mm：Acceptable; LDA > 5mm：Not recommended
02 | About Decentration Amount (LDA)
Ideal Lens Height ≥ 36mm
Full access to the progressive zone for wider vision.
Minimum Lens Height ≥ 18mm
Ensures basic progressive zone usability.
03 | High Prescription ( ≥ -6.00 ) Frame Advice
Avoid oversized frames
Reduce lens weight and nose bridge pressure.
Avoid rimless frames
Prevent thick lens edges (opt for small semi-rim or full-rim frames).
04 | Low Prescription (≤ -1.00 ) Refractive Index Guide
Opt for 1.56 / 1.60 index for better value and lightness.
Not recommended High index 1.67 / 1.74：
Poor cost-effectiveness – minimal thickness difference.
05 | Prescription Help: Upload & Let Us Handle It!
▶ Unsure how to fill prescription data
▶ Worry about input errors
▶ Find the process tedious
What to do：Upload a photo of your prescription during checkout – our experts will fill it in/correct it for you!
06 | Material Tips for Metal Allergy Sufferers - Recommended
TR90: Ideal for sensitive skin
Ultra-lightweight, durable nylon-based.
Acetate: Hypoallergenic, skin-friendly
Natural resin-based acetate and available in diverse stylish designs.
Avoid：Frames made of metal alloys (e.g., nickel, copper) to prevent contact dermatitis.
Shipment & Return
We offer free shipping if your order is over US$69. Also we offer Express Shipping which typically delivers within 5-7 days after shipment.
  • Refund policy
  • 1A 365-day warranty is provided, covering manufacturing defects,excluding damage from accidents, neglect, or improper care.
  • 230-Day return & exchange: Products can be returned, exchanged, or refunded within 30 days.
  • 330-Day Price Guarantee: The Price Difference will be refunded to you If the product(s) is/are cheaper on ELKLOOK within 30 days when you place an order(s).
    • How to care for glasses?
    Proper eyeglass care helps extend their lifespan:
    • Always use both hands to take glasses off to prevent frame distortion.
    • Store them in a protective case when not in use.
    • Clean them regularly with lens-safe products.
    • Avoid placing glasses lens-down on surfaces.
    • Keep them away from extreme heat (like car dashboards).
    • Regularly check for loose screws and get professional adjustments if needed.
    What are prescription glasses?
    Prescription glasses are customized eyewear designed to correct vision problems such as nearsightedness, farsightedness, astigmatism, or presbyopia using lenses tailored to your individual prescription.
    Your prescription can be found:
    On the paperwork from your last eye exam
    By contacting your optometrist or ophthalmologist
    Sometimes printed on your current glasses box or records (not directly on the glasses)
    How to take care of your eyes?
    • Protecting your vision is key to long-term eye health:
    • 1Follow the 20-20-20 rule: Every 20 minutes, look at something 20 feet away for 20 seconds.
    • 2Wear sunglasses with 100% UV protection outdoors.
    • 3Use blue light blocking glasses if you spend long hours on digital screens.
    • 4Get regular eye exams, even if you don’t wear glasses.
    • 5Maintain a balanced diet rich in vitamin A, omega-3s, and leafy greens.
    • 6Stay hydrated and get enough sleep.
    • 7Avoid rubbing your eyes and wash hands frequently to prevent infections.
    Still have questions? Check more.
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