Fortis Eyewear Polarised Logo


Fortis Eyewear are specialists in producing polarised fishing sunglasses that help you see through water. Our sunglasses help eliminate glare, provide over 99% polarising efficiency and maintain a high visual clarity. Our fishing sunglasses provide UV400 protection. Fortis Eyewear products are tested to and pass British Standard BS EN ISO 12312-1:2015. Wearing Fortis Eyewear sunglasses help to reduce eye strain and enable you to see deeper into the water to locate your quarry.

How do polarised fishing sunglasses work?

How Fortis Eyewear's Polarised Lenses Enhance Your Viewing Experience

When light bounces off smooth surfaces like water or snow, it becomes polarised. This means the light waves spread out mainly in horizontal and vertical directions instead of scattering randomly. This results in a harsh intensity of light that we perceive as glare, which can be both irritating and potentially hazardous.

Fortis Eyewear's polarised lenses are designed to combat this problem. These lenses feature a special filter that effectively blocks this intense, reflected light, significantly reducing glare. The creation of this filter involves a process where a film is heated and stretched over the lens. This process aligns the film's molecules into parallel lines, forming an effective barrier against glare. In simpler terms, Fortis Eyewear's polarised lenses work like a shield, blocking out the blinding light and allowing you to see clearly and comfortably.


Choosing the Right Polarised Lens Colour

Choosing the right polarised lens colour for fishing need not be a complex task. With many manufacturers using overly complicated terminology to explain the best polarised lens colour for each fishing scenario, it can seem overwhelming. However, this guide simplifies the process and helps you make the right choice.

Considering Light Levels for Perfect Vision

The first step in selecting the right polarised lens colour for fishing involves considering light levels. The principle is quite straightforward. For cloudy or overcast conditions, opt for brighter or lighter lens colours like our Amber AMPM or Switch Lenses. These lenses allow more light to reach your eyes, making them ideal for snaggy conditions or when there is dappled light from overhanging trees.

In contrast, bright sunny conditions require a darker tint. Our Brown 247, Green, or Grey Lenses are perfect for these conditions. Here's why each colour stands out: Brown 247 provides excellent contrast definition, Green offers the most natural vision, and Grey neutralises bright lights, protecting against eye fatigue, especially for those with sensitive eyes.

Water Clarity: A Key Factor in Lens Selection

Often, we hear questions like "What is the best lens colour for Carp fishing?" or "What is the best lens colour for freshwater fishing?" A more effective way to answer this question is by assessing water clarity. Is the water body you're fishing in clear or murky?

The rule remains the same as with light conditions. Murky waters require lenses that allow as much light as possible, making our Amber AMPM or Switch lenses an excellent choice. For clearer water bodies, darker tints like our Brown 247, Green or Grey lenses are more suitable.

Conclusion: Making the Right Choice

By applying these principles, you can select the perfect polarised lens colour for your fishing needs. If you still have questions about our lenses, continue reading or call us at +44 (0) 203 441 6495. Our experienced staff are ready to guide you through the selection process and help you find the perfect pair of polarised sunglasses for your angling adventures.



Light Transmission: 38%

Light Condition: Low Light

Weather Condition: Cloudy | Overcast

Water Type: Deep | Murky

Contrast: Medium / High



Light Transmission: 13%

Light Condition: Low Light

Weather Condition: Cloudy | Overcast

Water Type: Deep | Murky

Contrast: High



Light Transmission: 14%

Light Condition: Bright Light

Weather Condition: Sunny

Water Type: Clear

Contrast: Medium



Light Transmission: 18.5%

Light Condition: Medium to Bright Light

Weather Condition: Cloudy | Sunny

Water Type: Clear | Shallow | Weedy

Contrast: Medium

What polarised lens material for fishing?

A Comprehensive Guide to Our Advanced Polarised Lens Materials for Optimum Viewing

Understanding Lens Materials: More Than Just "The Best"

It's a common misconception that there exists a single, superior lens material. At Fortis, we believe the question isn't about the "best" lens but rather, "which lens is right for you?"

GLASS: The Pinnacle of Performance

Our GLASS polarised lenses for fishing stand at the forefront of lens technology, setting new standards in lens manufacture. These lenses offer unparalleled optical precision, clarity, durability, and protection, making them the very best choice for any angler wanting to take their fishing to the next level.

TRIPLE X Lenses: The Ultimate in Plastic Lenses

Next on our list are the TRIPLE X lenses, our premium plastic lenses. With a patented Ultra Slim Injection process, these lenses guarantee high optical precision, extreme clarity, and superior protection. They offer eXtra Clarity, eXtra Definition, and eXtra Protection, living up to their name.

STANDARD: A Polarised Lens that Ticks all the Boxes

The most all encompassing lenses, manufactured to provide excellent polarisation & value with good scratch resistance & optical clarity. These light weight lenses will cover almost every fishing situation and enable you to "See Deeper"

SWITCH Technology: Adapting to your Environment

One of our revolutionary features is the SWITCH Technology. These photochromic lenses adapt to varying light conditions – they darken when it's sunny and lighten when it's cloudy. This feature ensures optimal viewing regardless of the weather conditions.


Fortis XBLOK Technology: Extra Glare Block for Maximum Performance

Our XBLOK technology is a mirrored surface coating that provides additional or 'eXtra' glare block. Available in various colours, each designed to filter out certain colours within the light spectrum, XBLOK offers maximum performance in any condition.

Gold XBlok - Offers the highest contrast. Ideal for spotting dark shapes in deep clear water.
Silver XBlok - Designed for vibrance.
Blue XBlok - Provides superior contrast in bright sunlight.
Fire XBlok - Superb all round protection & glare block.

AR Coating: Minimising Reflected Light

Some of our lenses come with an anti-reflective (AR) coating applied to the inner surface (Finseeker model). This specialised coating minimises the amount of light reflected from your face, for instance, your cheekbone. In sunglasses, an AR coating significantly improves vision clarity by reducing glare caused by reflected light on the inner lens surface.

Fortis Eyewear Switch Logo


Light Transmission: Variable % dependant on model

Light Condition: All Light

Weather Condition: All

Water Type: All

Contrast: Medium / High

Fortis Eyewear Triple X Logo


Clarity: Maximum

Light Condition: All Light

Weather Condition: All

Protection: UVA | UVB | UV400

Contrast: Maximum



Anti-Reflective Coating: Manufactured on the inner side of lens

Purpose: Eliminate reflection from users own face

Light Condition: Bright Light

Weather Condition: Sunny

Contrast: High

Fortis Eyewear XBlok Logo


Purple XBlok: Improve contrast

Blue XBlok: Maintain true colour perception

Red XBlok: Enhance depth perception

Silver XBlok: Performance in various light conditions

Gold XBlok: Enhance visual clarity


Now you know everything about our lenses it's time to compare our glass, polymer (Triple X), and standard lenses, emphasising that each has unique strengths tailored to specific needs.

Glass Lenses: Unrivalled Clarity, Scratch Resistance & Polarisation

While glass lenses offer unrivalled clarity, scratch resistance, and polarisation, they might not be the "best" option for everyone. If you prioritize weight and comfort, our Triple X lenses could be a better fit, offering significant lightness with only a slight drop in performance.

Pros and Cons of Glass Lenses

Pros: 100% Polarisation, Unrivalled Optical Clarity, Superior Scratch Resistance, Richer Tones. Cons: Heavy, Expensive.

Triple X (Polymer) Lenses: Exceptional Clarity, Lightweight & Affordable

Our Triple X lenses are crafted from polymer, a material that offers 99.9% polarisation and exceptional optical clarity. They're significantly lighter than glass lenses, making them a comfortable choice for long wear.

Pros and Cons of Triple X Lenses

Pros: 99.9% Polarisation, Exceptional Optical Clarity, Lightweight, Affordable. Cons: Less Scratch Resistance, Less Durable Over Time.

Standard Lenses: Good Clarity, Lightweight & Extremely Affordable

If you're looking for a balance between cost and performance, our standard lenses could be the perfect fit. Offering 99.9% polarisation and good optical clarity, these lenses are lightweight and highly affordable.

Pros and Cons of Standard Lenses

Pros: 99.9% Polarisation, Good Optical Clarity, Lightweight, Extremely Affordable. Cons: Less Scratch Resistance, Less Durable Over Time, More Distortion on Wrap Style Frames.

Conclusion: Choose What's Right for You

In conclusion, the choice of lens material should be dictated by your specific needs and preferences. If you fish short sessions and need glasses that simply "do the job", our standard lenses will be more than adequate. If you fish long sessions, are highly mobile, and have keen attention to detail, our Triple X lenses would be the perfect fit. For experienced anglers or guides fishing in extreme conditions where clarity of vision is paramount, we'd suggest opting for our glass lenses.

If you are still unsure, call the office on +44 (0) 203 441 6495