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The Oakley Enigma Ink OX8190 eyeglasses bring bold, architectural design to prescription eyewear. These full-rim square frames make a statement without apology—thick, dramatic lines that look substantial but feel surprisingly light on your face. Available in two sizes (55mm and 57mm lens width) and five distinct finishes including Satin Black, Grey Shadow, Polished Clear, Satin Brown Tortoise, and Matte Clear, the Enigma Ink is built for people who refuse to blend in.
O Matter Frame Technology: Built to Last
The frame front is constructed from Oakley's proprietary O Matter material—a stress-resistant nylon composite that's 25% lighter than traditional acetate and twice as strong. O Matter won't become brittle in cold weather or soften in heat, and it flexes on impact rather than cracking. For everyday wear, that means these frames can handle being tossed in a bag, sat on (accidentally), or worn during active days without the constant worry that plagues cheaper plastic frames. The material also resists UV radiation, humidity, and chemical exposure, so your frames stay looking sharp year after year.
Comfort Features That Actually Work
Oakley equips the Enigma Ink with TruBridge Sport Unobtainium nosepads—a proprietary rubber compound that increases grip as you sweat. The pads keep the frame firmly in place during movement, and because they're available in different sizes, you can dial in a custom fit for your specific nose bridge. The temples are made from lightweight injected material that tapers from thick to thin, distributing weight evenly, and they're finished with Unobtainium earsocks that prevent slipping. The 132mm temple length and 18mm bridge width accommodate a wide range of face shapes, though the bold square geometry works especially well on oval and rectangular faces.
Prescription-Ready Performance
These frames accept single-vision, progressive, and photochromic prescription lenses. The full-rim construction and generous lens height (particularly in the 57mm size) give optical labs plenty of room to work, making the Enigma Ink a solid choice even for stronger prescriptions. Oakley's flatter lens geometry compared to their wrapped sport sunglasses means better optical clarity and less distortion—important when you're wearing these all day at a desk or driving.
The Oakley Enigma Ink OX8190 ships with a protective case and cleaning cloth. Each frame is laser-etched with Oakley branding and includes demo lenses that can be replaced with your prescription. If you want eyeglasses that combine technical durability with head-turning design, the Enigma Ink delivers both.
Product Details
Product DetailsModel
0OX8190Shape
Gender
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
BlackColor Code
819001Color Description
Satin Black
Color Code
819002Color Description
Grey Shadow
Color Code
819002Color Description
Grey Shadow
Frame Color
BlackColor Code
819001Color Description
Satin Black
Color Code
819003Color Description
Polished Clear
Frame Color
BrownColor Code
819004Color Description
Satin Brown Tortoise
Frame Color
BrownColor Code
819004Color Description
Satin Brown Tortoise
Color Code
819003Color Description
Polished Clear
Color Code
819005Color Description
Matte Clear
Color Code
819005Color Description
Matte Clear
Color Code
819007Color Description
Matte Transparent Abyss
Frame Color
BrownColor Code
819006Color Description
Transparent Warm Beige
Color Code
819007Color Description
Matte Transparent Abyss
Frame Color
BrownColor Code
819006Color Description
Transparent Warm Beige
Size Details
Size DetailsBridge Width
18.00Temple Length
132.00Size
5718-132
Bridge Width
18.00Temple Length
132.00Size
5718-132
Bridge Width
18.00Temple Length
132.00Size
5518-132
Bridge Width
18.00Temple Length
132.00Size
5518-132
Bridge Width
18.00Temple Length
132.00Size
5518-132
Bridge Width
18.00Temple Length
132.00Size
5518-132
Bridge Width
18.00Temple Length
132.00Size
5718-132
Bridge Width
18.00Temple Length
132.00Size
5718-132
Bridge Width
18.00Temple Length
132.00Size
5718-132
Bridge Width
18.00Temple Length
132.00Size
5518-132
Bridge Width
18.00Temple Length
132.00Size
5518-132
Bridge Width
18.00Temple Length
132.00Size
5518-132
Bridge Width
18.00Temple Length
132.00Size
5718-132
Bridge Width
18.00Temple Length
132.00Size
5718-132
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Frequently Asked Questions
Are the Oakley Enigma Ink 8190 eyeglasses prescription-ready?
Yes, the Oakley Enigma Ink OX8190 frames are fully prescription-ready and can accommodate single-vision, progressive (no-line bifocal), and photochromic lenses. The full-rim design and generous vertical lens height make them suitable for a wide range of prescription strengths, including higher prescriptions that require thicker lenses.
What is Oakley O Matter material and why does it matter?
O Matter is Oakley's proprietary nylon-based frame material that's 25% lighter than traditional acetate and twice as strong. It's engineered to resist impact, UV radiation, heat, cold, and chemical exposure without becoming brittle or deformed. This means the Enigma Ink frames are more durable and longer-lasting than standard plastic eyeglasses, especially for active wearers.
What face shapes work best with the Oakley Enigma Ink square frames?
The Enigma Ink's bold square shape works best on oval and rectangular face shapes, where the angular lines create attractive contrast. The architectural design and defined corners complement faces with softer features. The frames are available in two sizes—55mm and 57mm lens width—to accommodate different face widths and ensure proper pupil alignment.
What is Unobtainium and how does it improve fit?
Unobtainium is Oakley's proprietary rubber material used on the nosepads and temple earsocks. It increases grip when you sweat, preventing the glasses from sliding down your nose during activity or in warm conditions. The TruBridge Sport Unobtainium nosepads on the Enigma Ink come in different sizes, allowing you to customize the fit for your specific nose bridge width and depth.
How do I choose between the 55mm and 57mm size?
The size refers to the lens width in millimeters. The 55mm is considered a large fit, while the 57mm is extra-large. To choose, measure your current glasses (the size is usually printed inside the temple) or consider your face width—if you have a wider face or prefer more coverage, go with 57mm. Both sizes share the same 18mm bridge width and 132mm temple length.
Can I use these frames for progressive lenses?
Yes, the Oakley Enigma Ink OX8190 works well with progressive lenses. Oakley eyeglass frames generally have flatter lens geometry and larger vertical lens height compared to their sport sunglasses, giving optical labs sufficient room to properly position the progressive corridor. This makes them a better choice for progressives than wrapped sunglass frames.
Compare With Similar Frames
How the Oakley Enigma Ink 8190 Eyeglasses stacks up against the closest alternatives we carry.
- Lower price point ($92-$187 vs $255-$276)
- Classic Oakley design with proven track record
- Slightly less bold styling works for more conservative settings
- More versatile for professional/office environments
- Similar price range ($129-$276)
- Slightly lighter weight for all-day comfort
Read the full comparison
Oakley Enigma Ink vs. Holbrook Rx vs. Pitchman: Which Square Frame Is Right for You?
If you're shopping for bold square Oakley prescription eyeglasses, three models dominate the conversation: the Enigma Ink OX8190, the Holbrook Rx 8156, and the Pitchman 8050. Here's how they stack up.
Design Philosophy
The Enigma Ink is Oakley's most dramatic optical frame—thick, architectural lines designed to make a statement. It's for people who want their eyewear to be noticed. The Holbrook Rx brings the brand's iconic sunglass silhouette to prescription eyewear with a classic square shape that's bold but not overwhelming. The Pitchman takes a more refined approach with cleaner lines and a professional aesthetic that works equally well in boardrooms and coffee shops.
Construction and Materials
All three use Oakley's O Matter frame material for lightweight durability, but the Enigma Ink features the most advanced grip technology with TruBridge Sport Unobtainium nosepads that come in multiple sizes for custom fit. The Holbrook Rx uses standard Unobtainium components, while the Pitchman opts for a more traditional approach. If you're active or live in a warm climate where glasses tend to slip, the Enigma Ink's enhanced grip system is worth the investment.
Size and Coverage
The Enigma Ink offers the largest coverage with 55mm and 57mm lens widths—ideal for bigger faces or anyone who wants maximum lens area. The Holbrook Rx sits in the middle, while the Pitchman runs slightly smaller and more compact. For progressive lens wearers, the Enigma Ink's larger vertical lens height provides more room for the progressive corridor.
Price and Value
The Holbrook Rx wins on price ($92-$187), making it the best entry point into Oakley prescription eyewear. The Pitchman ($129-$276) and Enigma Ink ($255-$276) are similarly priced at the top end, but the Enigma Ink's advanced fit technology and bolder design justify the premium if you want the latest Oakley innovation.
The Verdict
Choose the Enigma Ink if you want the boldest, most modern design with the best grip technology and don't mind paying for cutting-edge Oakley engineering. Go with the Holbrook Rx if you want classic Oakley style at a lower price point and prefer proven, iconic design. Pick the Pitchman if you need versatile frames that work in professional settings but still deliver Oakley quality and a modern square shape.
At a Glance
Oakley Holbrook Rx 8156 Eyeglasses
Pros:
- Lower price point ($92-$187 vs $255-$276)
- Classic Oakley design with proven track record
- Slightly less bold styling works for more conservative settings
- Widely available replacement parts and accessories
Cons:
- Less architectural and modern than Enigma Ink
- Smaller frame size may not suit larger faces
- Less dramatic visual statement
- Fewer color options available
Oakley Pitchman 8050 Eyeglasses
Pros:
- More versatile for professional/office environments
- Similar price range ($129-$276)
- Slightly lighter weight for all-day comfort
- Cleaner, more minimalist design
Cons:
- Less bold and distinctive than Enigma Ink
- Smaller square shape may not suit those wanting maximum coverage
- Less architectural detailing
- Not as much of a statement piece