Knowledge – Extra-Wide Rectangle Dual-Strength Bifocal Reading Glasses with Acetate Frame

Knowledge – Extra-Wide Rectangle Dual-Strength Bifocal Reading Glasses with Acetate Frame

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$99.95

What are two strength bifocal readers explained

How to Choose Your Strengths

Choosing your powers is easier than it sounds. Here’s a simple way to think about it:

Step 1 – Start with what you already wear.
If you use two pairs today — one for the computer and one for reading — those are the same two strengths you’ll use in your Dual-Strength lenses: computer power on top, reading power on the bottom.
If you currently wear just one pair of readers, use that strength as your bottom (reading) power.

Step 2 – Choose a milder power for the top.
The top of the lens is made for computer and mid-range (arm’s-length) vision, so it should be weaker than your reading strength — similar to your “computer pair” if you already use one.

Step 3 – Why the difference matters.
Dual-Strength lenses work best when the top is at least 1.00 diopter weaker than the bottom. This creates a smooth, comfortable transition from computer distance to close-up reading — without eye strain.

Step 4 – Fine-tune for your daily habits.
If you spend more time on the computer than reading, choose a gentler top power for relaxed, sustained clarity.

Here are a few example combinations that follow the required 1.00 diopter difference and offer smooth dual-distance clarity:

Your usual readers	Suggested top (computer)	Suggested bottom (reading)
+2.50	+1.50	+2.50
+3.00	+2.00	+3.00
+3.50	+2.50	+3.50
+4.00	+3.00	+4.00

Difference between dual bifocal and progressive lenses

Dual-Strength Bifocals vs. Progressive Lenses

Progressive lenses may promise seamless vision, but for many readers, they come with trade-offs that affect comfort, safety, and cost.

Long adjustment period: Progressives often require weeks of adaptation and can cause dizziness, headaches, or eye strain.
Dual-Strength benefit: Two clearly defined zones mean little to no adjustment—your eyes know exactly where to look.

Reduced peripheral vision: The narrow vision corridor in progressives can limit side vision, which may feel unnatural or unsafe while walking or driving.
Dual-Strength benefit: Full peripheral clarity with no distortion or swim.

Higher cost: Progressives are often significantly more expensive due to complex lens technology.
Dual-Strength benefit: $79 with free shipping—clear, predictable pricing.

Frame limitations: Progressives require taller frames, reducing your style options.
Dual-Strength benefit: Over 40 frame styles in multiple sizes, colors, and shapes—no compromises.

Why Dual-Strength Bifocals Just Work

• Two clearly defined magnification zones for natural, predictable vision
• Comfortable clarity for reading, computer work, and everyday mid-distance
• Designed for immediate comfort — no learning curve
• Thoughtfully engineered for daily wear, all day long

We’ve been designing and perfecting reading glasses for over 30 years. Every Dual-Strength lens reflects decades of hands-on experience listening to customers, refining fit, and focusing on what truly makes glasses easy to wear.

You’ve chosen the frame style. Next, you’ll personalize your pair by selecting the frame color, frame width, and lens strengths that suit how you see and live.

Choose your color, width, and powers below to complete your pair ↓

SKU:: mo-knowledgedualbf
Weight:: 1.10 Ounces

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Description

A bold, masculine extra-wide frame built for men who want strong coverage, modern style, and high-performance clarity.

A Modern Classic for Sharp Minds

Meet Knowledge — an extra-wide rectangular reader crafted for men who prefer a spacious fit and a confident, contemporary look. The clean angles, wide-set design, and smooth matte finishes give this frame a powerful yet relaxed presence that works anywhere.

If you want a frame that balances strength, comfort, and modern simplicity, Knowledge delivers exactly that.

Precision Lens Innovation for Seamless Everyday Use

Knowledge uses DebSpecs’ advanced dual-strength bifocal system, engineered for smooth and natural vision transitions.

Upper Zone (Computer / Intermediate Vision)
• Softer magnification ideal for screens, conversations, and mid-range clarity
• Reduces eye strain during long digital sessions

Lower Zone (Reading / Near Vision)
• Stronger magnification that sharpens details instantly
• Perfect for documents, books, manuals, labels, and fine print

No harsh line — just fluid, clear vision wherever your gaze moves.

Crafted With Lightweight Acetate Comfort

Durable, clean, and ideal for extra-wide fit needs.

• Thick, modern rectangular shape for bold masculine styling
• Lightweight Acetate construction suitable for extended wear
• Wide temples for added stability and comfort
• Matte finishes for a sleek, premium look
• Extra-wide frame designed for broader face widths

A strong everyday frame that pairs clarity with all-day comfort.

Fit & Measurements

Lens width: 57 mm
Bridge: 17 mm
Temple length: 150 mm
Face width: X-Wide – 133 mm
Shape: Rectangle

Perfect for men who require an extra-wide design that doesn’t compromise style.

Available Colorways

Choose the finish that suits your personality:

• Black Matte — bold, minimal, and timeless
• Crystal/Tortoise Matte — modern transparency with classic warmth
• Grey Matte/Black — cool, understated, and confidently clean

Perfect for Every Setting

• Work, reading, and digital productivity
• On-the-go clarity for commutes and travel
• Larger face shapes needing a comfortable extra-wide fit
• Men who prefer strong, angular, modern styling

Why “Knowledge” Is a Smart Upgrade

• Seamless, no-line dual-strength bifocal clarity
• Extra-wide frame built for superior comfort
• Lightweight Acetate with a strong, masculine profile
• Premium matte finishes for a modern look
• Reliable all-day performance for work and life

Shipping & Production Notes

Due to the custom precision of these lenses, orders typically ship within 3–5 business days.