Acquiring an excellent pair of Sunglasses is critical on the water. Solar can damage your eyes, and glare from the h2o makes it challenging to differentiate features https://www.amycoz.com/magnetic-clip-on-sunglasses/, be it wind or what lies below the surface.
It can be challenging to learn which set of sun shades are very best to suit your needs, so we’ve got place collectively a list of information you should look at.
UV defense towards UVA & UVB rays
Polarized lens reduces glare off drinking water, the most effective boating sunglasses are polarized
Lens Material are made from glass or plastic materials
Lens tints filter out enough of the right kind of light to reduce brightness
Lens coatings, Mirrored coatings reflect glare but are prone to scratching
Frame designs and materials help keep sunglasses in place
Fit & Feel, Sunglasses need to hold in place, but not pinch or rub
The FDA, the government agency that oversees sunglass manufacture and sales in the U.S., recommends you look for sun shades with lenses that block 99-100% of UVA and UVB radiation. The label should read either UV 400 or 100% UV safety.
Polarized lenses are necessary on the h2o to block glare from interfering with your vision. Light striking flat surfaces, such as h2o, or snow, is reflected perpendicular to that surface area. Polarized lenses block all this vertical light. Polarized lenses enable you to read the drinking water floor plus see what lies underneath the area.
Acrylic lenses are the cheapest. They certainly do not have the optics of glass lenses, but they may do for many applications. Example; Gill
Polycarbonate lenses are the lightest, and are also almost shatterproof. Polycarbonate lenses vary in price from cheap to the most expensive, due to the coatings which improve optics. Example Baby banz, Switch Vision
CR-39 A plastic used mostly in prescription-grade lenses. CR-39 is the most common plastic lens, due to low weight, high scratch resistance, and low transparency for ultraviolet and infrared radiation. Example, Costa del Mar
SR-91 Kaenons proprietary lens combines the superior optical quality of the finest glass and the lightest weight, strength and impact resistance of polycarbonate. Examples; Kaenon
Optical Glass gives the finest optics and scratch resistance. Optical Glass Lenses are ground and polished to the exact thickness of the lens to assure a distortion-free lens. Glass lenses are expensive and can shatter. Examples; Maui Jims, Costa del Mar
Photochromic lenses provide unique climatic management technology, getting dark from low to high light transmission within few seconds; Polarized Photochromic enhance contrast and depth perception while providing unparalleled eye protection. Examples; Rudy Project
CR-39R plastic lenses absorb about 88 % of UV light
Polycarbonate lenses, absorb 100 % of UV light
Visible light transmission
The amount of light passing through a lens is called visible light transmission. For boating, visible light transmission should fall in the 15-30 percent range. On bright days, you want the lowest % of total available light ie darker lenses.
Tints filter out enough of the right kind of light to reduce brightness without eliminating what you need to see. Reflective coatings reflect the color wavelength.
Early morning, dusk or overcast conditions. With less ambient light outside you need more light coming through the lens to your eyes and a way to enhance the information. Think about Photochromic, light adjusting lenses that will adjust as the day lightens or darkens. Interchangeable lenses will allow a wider variety of light conditions.
Mid-day, cloudless and full sunlight days. Bright solar conditions mean lots of glare and you need a way to block the light and eliminate glare without losing the aspects. Mirrored coatings will help cut the glare. Interchangeable lenses will allow you to quickly adapt to changing light conditions.
Tint and color
Solid Tinted Lenses; are evenly tinted across the entire lens to cut glare.
Gradient Tinted Lenses; are darker at the top and lighter at the bottom to cut overheard glare.
Double Gradient Lenses; are darker at the top and bottom and lighter in the center to cut overhead and reflected glare from the ground.
Brown/Amber/Copper Lenses; These colors filter blue light, making them a natural choice for outdoor sports lovers; golfing, drinking water and snow sports. Because of their contrast sharpening and anti-glare properties, brown-tinted lenses can also improve visibility while driving.
Gray/Green-Gray Lenses; allow the wearer to see outside colors as they naturally appear. These neutral tones are a popular choice and improve contrast, visibility, and depth perception.
Yellow/Rose Lenses; neutralize blue light. This increases contrast, making objects look sharper on hazy or cloudy days. Red tints enhance color contrast and may improve visibility while driving. Some people prefer rose tints for comfortable prolonged wear.
Interchangeable lenses; many sports-optimized sun shades have interchangeable lens options. Lenses can be easily removed and swapped for a different colored lenses. Switch vision make lenses and frames with magnets to aid the switching of lenses. The powerful magnets pull the lens into place which can make changing much easier.
Lens coatings can dramatically increase the quality of a lens.
Mirrored coatings reflect glare but are prone to scratching
Scratch resistant coatings
Anti fog coatings
Hydrophobic coatings repel h2o
Nylon frames are usually ideal because they are lightweight and flexible. They can bend and return to their original shape instead of breaking when pressure is applied to them.
When testing sunglasses look to see if the sides and nose have the required grip. Where the frame sits about the temple is where you get the grip. Many manufacturers use special rubber materials that actually increase grip in humid conditions. Look for a frame that has a large contact area within the temple.
Costa Del Mar Turbine & Fathom frames use Hydrolite, a rubberized composite combined with an advanced nylon material to produce a frame that is extremely comfortable and really grips the head. Rudy project use a hypoallergenic Megol material.
The bridge of the nose is the second place where sunglasses provide their grip. I have used sunglasses that used to slide around when it was hot and sweaty, in this case the nose piece was smooth plastic. Look for a grippier material for the nose.
Wrap around sunglasses and frames that fit close to the head are most effective. Boating is an activity sport so, sun shades that stay in place are more important than style. By hugging the face closely on all edges, wrap-around do a great job of blocking light and wind from entering at any angle.