Costa is known for seamlessly blending style, function and cutting-edge sunglasses technology. Through research and development, we’ve introduced multi-patented lens technologies that have set new standards for performance and durability. Whether you’re fishing inshore or navigating choppy seas, our lenses offer superior clarity, color enhancement and functionality. 

The Science Behind Costa Lens Technology
All Costa sunglass lenses are polarized, meaning they filter horizontal light waves to reduce glare reflected off surfaces like water, snow and concrete. This reduces the need to squint when encountering glare, improving your visual comfort and making objects appear more detailed. Costa’s polarized lenses feature the highest polarizing efficiency of 99.9%.  
 
Costa lens technology also offers 100% UV protection, which shields your eyes from the sun’s damaging rays. Long-term UV exposure can increase your risk of developing certain eye conditions and other health issues. Wearing sunglasses with 100% UVA-UVB lens protection is an essential part of keeping your eyes healthy over time. 
 
But the science behind Costa lenses also involves two proprietary features: our 580 lenses and 10 unique lens tints. 
 
580 Lenses
Costa 580 lenses are the pinnacle of sunglass lens technology. Named for the part of the light spectrum that features the harshest yellow light, 580 lenses filter light waves at 580 nanometers. This allows blues, greens and reds to stand out, enhancing clarity and sharpening contrast. High-energy visible (HEV) light, which can lead to long-term eye concerns, is also filtered by these lenses. 
 
All Costas feature 580 lens technology, which is available in glass (580G) or polycarbonate (580P). Each lens type offers various benefits:   
580G – These lenses are made of lightwave glass, providing superior optical clarity and durability. 580G lenses are scratch-resistant thanks to mirrors encased between layers of glass. They are also 20% thinner and 22% lighter than standard polarized glass lenses, enhancing their comfort and functionality. 
580P – Polycarbonate lenses are lightweight, durable and impact-resistant. They also feature a C-WALL molecular bond, making them scratch-resistant. 
 
Most Costa sunglasses can be fitted with prescription lenses for those who need vision correction.  
 
Lens Tints
Costa offers a range of lens tints to meet the various needs that arise with specific light conditions. From fishing in shallow waters to daily use, there’s a lens tint for every preference and environment. We offer 10 diverse lens tints: 
 
Blue mirror – Designed for bright conditions and deep-water fishing 
Green mirror – Excellent for flats and inshore fishing 
Gray silver mirror – Perfect for overcast conditions and everyday water activities 
Copper silver mirror – Ideal for sight fishing, stream fishing and diverse environments 
Gray – Tailored for various water activities and conditions 
Copper – Suitable for overcast days, sighting fish and more 
Sunrise silver mirror* – Ideal for low-light fishing such as at dawn and dusk 
Gold mirror – Great for various light conditions and everyday use 
Rose gradient – Perfect for a variety of fishing environments and daily use 
Gray gradient – Ideal for different light conditions and everyday activities 
 
*The sunrise silver mirror lens tint is not suitable for driving. 
 
Costa lenses also repel water and moisture, helping to keep your vision unobstructed while you focus on the task at hand.

• Photokeratitis. EyeWiki. American Academy of Ophthalmology. March 2024. 
• What are polarized lenses for? EyeSmart. American Academy of Ophthalmology. June 2022. 
• The sun, UV light and your eyes. EyeSmart. American Academy of Ophthalmology. June 2020.