432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
432 / Horn Dark Mix / Day Lens
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432 / Horn Dark Mix / Day Lens

Blue Light Blocking Glasses

Daytime blue light protection for screens and artificial lighting.
Choose frame color
handcrafted buffalo horn
  • For daytime screens and artifial light
  • Blocks 90% blue and green light
  • 100% handcrafted natural buffalo horn
  • Premium leather case
  • Free US Shipping
$200
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Day
Lens

Frame Model 432

Handcrafted from 100% genuine buffalo horn.

Lens width: 51mm 

Bridge width: 21mm

Temple length: 145mm

Each frame is unique with natural horn variation. 

Color and pattern varies (categorized by light mix, medium mix, or dark mix).

Premium day lens tested to block blue and green light spectrum for optimal circadian rhythm and eye strain reduction.

Spectrometer tested to block 90% of light up to 480nm, the ideal blend of blockage and usability.

Wear for screen usage and under artificial light.

Occasionally hydrate the natural horn with a light coat of natural oil or tallow.

Free US shipping and exchanges. 

International shipping charged at cost. International exchanges must cover return shipping.

See refund policy.

Artificial light tricks your brain.

Filter harsh blue light during the day without the deep red tint of night lenses.

For computer work, screen time, and life under modern LEDs. 

Designed for daytime use. 

These lenses are designed for daytime - when screens, LEDs, and artificial lighting can flood your eye with excess blue light.

Wear them while working, using screens, or under artificial lights.

These wavelengths trick your brain.

Sunlight gives your eyes a full, balanced spectrum.

But screens, LEDs, and modern indoor lighting can spike blue light in a way your body was not built for.

Yellow blue-blocking lenses filter the harsh edge of artificial light, helping make screen work and indoor environments feel softer, calmer, and more natural.

Spectrometer tested.

Verified to block the wavelengths of light most disruptive to sleep.

Blocks 90% of blue-green light up to 480nm.

A forgotten natural material.

Crafted from genuine buffalo horn, these frames are shaped, polished, and finished by hand - not molded from plastic.

Horn: Nature's Plastic

The earliest known eyewear was crafted from horn or bone - long before modern plastics existed. These materials were chosen for their durability, comfort, and natural feel against the skin.

Unlike synthetic frames, horn is warm to the touch, lightweight for comfort, and strong for a perfect fit.

Every frame is one-of-a-kind from nature with varying coloration, grain, and translucence - no two pairs are ever exactly alike.

The Fit: Frame 432

A wayfarer-inspired frame with a bold, classic silhouette.

No Two Are Exactly Alike

Natural water buffalo horn is a living material with varying coloration, grain, striations, and translucence.

Each pair carries nature's unique fingerprint.

We categorize by color tone, but variation is to be expected, and where the beauty is.

Horn Mix Light: 

Majority light tones from white to beige, from opaque to translucent, with a varying amount of darker coloration.

Horn Mix: 

Medium tones dominate, from browns and greys to tans or translucent amber. Often with hits of light or dark contrast.

Horn Mix Dark: 

Mostly dark tones, typically near-black, with varying marbling and striations of medium tones or translucence.

Frequently Asked Questions

The day lenses are designed specifically for daytime use with screens or under unnatural indoor lighting.

The warm tint indicates strong reduction of blue and green light wavelengths most associated with circadian disruption. Clear lenses claiming to do this don't work.

Each frame is crafted from natural buffalo horn so coloration, pattern, and translucence varies. We categorize by color tone, but no two frames are exactly alike. Each frame shows off the one-of-a-kind beauty of the natural world.

For any concern around variation, you can verify and approve your exact frame immediately after placing your order by emailing info@rhizal.co

Yes. Buffalo horn is a strong, naturally resilient material that has been used in eyewear and tools for centuries. With basic care, horn frames are designed to last for years and can be maintained over time.

Our frames are made from water buffalo horn - the same animal used widely in leather goods, including our shoe outsoles. The horn is a natural byproduct of the food and leather industries and would otherwise go to waste.

We believe in using the whole animal, minimizing waste, and choosing natural materials over petroleum-based synthetics. For us, honoring the full animal is far better than synthetic pollutants.

Our frames are designed to fit nearly everybody. Some styles are larger or smaller, with exact measurements listed on each product page to help you choose confidently. For blue blockers, "too big" can be perfect for more eye coverage. We offer one free US exchange if a different frame design is preferred. Returns are possible within 30 days for unused items.

Occasionally hydrate the natural horn with a light coat of natural oil or tallow. Horn is made of keratin, like hair or fingernails, and can dry out over time. Occasional hydration will keep them in perfect condition for years to come.
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