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Extreme Exposure Lenses (Glacier)

Designed For Maximum Density And Protection In Environments Of Extreme Exposure

Lens selection is easy! Look at the descriptions, and call us @ 1-800-870-5557 or just call us first and our expert staff can recommend one of our specialty lenses. Our lenses are available in prescription and non prescription!

Pro-Performance Lenses

 

Performance Lenses

Blue Tundra Pro-Performance Lens McKinley Pro-performance Lens Silver Frog Pro-performance lens     Sierra Performance Lens Malachite Performance Lens<
Blue Tundra McKinley Silver Frog   Sierra Malachite

Pro-Performance vs. Performance Series Lenses

Pro-Performance Lenses: These lenses offer a maximum of 92-93% light reduction; excellent for high-altitude expeditions, rock climbing and ice climbing. Blue Tundra and Silver Frog lenses feature a flash mirror front, pigment base and back anti-reflection coat. McKinley lenses feature a higher contrast amber photochromic base and will transition to a 92% chocolate brown density in cool bright conditions. Variations on the McKinley filter are available by request for other applications such as more rapid downhill skiing that requires a limit to maximum densities and a lighter starting point.

Performance Lenses: Darker than average sunglasses, at 88% visible light reduction, the Sierra #3 or Malachite #3 lenses offer good all around performance for everyday activities. They feature a color pigment base, additional UV filter and scratch resistant coat (not scratch proof). Caution! Though the initial density of these lenses is sufficient for higher altitude activity, materials that are neither mirrored nor photochromic based can be subject to gradual loss of color density and UV filter saturation over time. Serious repeat climbers should consider a filter that offers longer term solutions for protracted repeat use.

Find out about the lens back routing process

Due to the complexity of different type lens materials and prescriptions, please call for a quote.

Pro-Performance Series Lenses

Blue Tundra

Blue Tundra pro-performance lens
(clouds reflecting on lens surface)

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92-93% density (7-8% VLT) This filter is truly glacier dedicated. The amber pigment base is dense and comfortable, but still retains enough contrast to enhance visibility in hazier or overcast environments. Available in resin and E-lite (mid index) single vision and multifocal/progressive.

PLEASE NOTE: MANUFACTURERS HAVE RECENTLY DISCONTINUED MOST PIGMENTED GLASS MATERIALS. WE REGRET THAT GLASS IS NO LONGER AVAILABLE IN MOST GLACIER OR MARGINAL GLACIER DENSITY FILTERS. COMING SOON: NXT (poly-resin hybrid) COLOR POURED FILTERS IN SINGLE VISION ONLY.

McKinley

 

McKinley Pro-performance Lens
(clouds reflecting on lens surface)

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Reaches 92-93% density (7-8% VLT) This filter is photochromic starting at 80% density in lower light conditions and transitioning to full glacier density in brighter cooler conditions. An excellent extreme exposure lens with some flexibility for other applications such as driving or more pedestrian activities. CAUTION! Extreme cold will also activate darkening even in lower light conditions. Other versions of this lens are available for active sport applications. Available in resin, very limited availability in glass.

COMING SOON: NXT (POLY-RESIN HYBRID) FILTERS IN SINGLE VISION ONLY.

Silver Frog

Silver Frog Pro-performance Lens
(clouds reflecting on lens surface)

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This filter is very bright light dedicated 92-93% density (7-8% VLT) with
little tolerance for flatter light or overcast conditions. The relatively neutral character of itʼs
pigment keeps color perception truer...better for desert applications than higher altitude. This
filter is available in resin and E-lite (mid index) single vision and multifocal/progressive.

PLEASE NOTE: MANUFACTURERS HAVE RECENTLY DISCONTINUED MOST PIGMENTED GLASS MATERIALS. WE REGRET THAT GLASS IS NO LONGER AVAILABLE IN THIS LENS. COMING SOON: NXT (POLY-RESIN HYBRID) FILTERS IN
SINGLE VISION ONLY

Performance Series Lenses

Sierra MGD

Sierra performance lens

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This lens offers 88-89% density (11-12% VLT). Considered marginal glacier density, this filter is fine for alpine exposure, but marginally protective for extended high altitude use. Amber base offers good flexibility in varying lighting conditions. Sierra MGD is available in a polarized and non-polarized version depending on application. The polarized version is not
recommended where accurate judgement of surfaces and terrain are critical (jumping crevasses, hanging from ropes). Polarizing is ideal for driving, more leisurely hiking and other outdoor activities.

Malachite MGD

Malachite Performance Lens

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This lens is identical to SIERRA MGD in all filtration characteristics other than base color, which is gray-green. The more neutral color offers truer perception, but is less forgiving in hazier or lower light conditions offering less detail than itʼs higher contrast amber counterpart. It is also available in polarized and non-polarized versions and subject to the same use recommendations as the above SIERRA MGD material.

Due to the complexity of different type lens materials and prescriptions, please call for a quote.