SlideShare a Scribd company logo
1 of 21
High-mountain
sun protection
www.julbo-eyewear.com
CONTENTS
1. Introduction
2. The dangers of the sun in high-mountain environments
3. The most common disorders
4. Julbo sun solutions
Anyone who practices high-mountain sports must be aware that they are
operating in a risky environment.
While the risks linked to the mountains themselves may be obvious, those
caused by exposure to the sun at high altitudes are more difficult to
understand. Julbo sheds some light on the subject.
Since the 1950s and the release of its famous Vermont, Julbo sunglasses
have accompanied expeditions up all the mountains of the world. From
the Antarctic to the Alps to 8,000 m Himalayan peaks, Julbo has honed its
expertise in high-mountain sun protection to become a benchmark brand
in this area.
Julbo shares its experience to make sure you have the best possible
protection for high-mountain environments.
2. THE DANGERS OF THE SUN IN HIGH-MOUNTAIN ENVIRONMENTS
Exposure to solar radiation increases on average by 10% (between 4 and
16%) with every 1,000 m of altitude, and the UVB light it contains is
particularly dangerous.
In addition, the snow often present in the mountains reflects between 80
and 90% of solar radiation compared with 20% on non-snowy ground.
The intensity of solar radiation is therefore 1.5 times greater at 2,000 m
and 2.5 times greater at 4,000 m than at sea level.
Exposure will vary depending on the thickness of the ozone layer in the
atmosphere (which acts as a natural filter), the season and the angle of
incidence of the sun's rays.
It should be noted that solar radiation is 25% greater at the autumn equinox
than the spring equinox when the ozone layer is thicker.
The ozone layer varies in thickness depending on where you are in world and
therefore offers differing degrees of protection.
The amount of radiation varies as the sun's position changes during the
course of the day. The risks linked to light will therefore also vary.
The angle of incidence of the sun's rays when they penetrate the ozone
layer has a direct effect on the amount of filtration provided by the ozone.
It is for this reason that radiation is strongest between 10 am and 3 pm.
It is important to remember that in cloudy conditions the sun is still
dangerous in the mountains.
You should not count on overcast skies to protect you as they provide
only limited filtration. While UV light can be stopped by some clouds
(alto-cumulus), cirrus clouds have no filtration effect at all.
50% of the sun's radiation passes through fog. It is therefore necessary
to protect yourself in the mountains, even when conditions are cloudy.
At high altitude, in overcast conditions, you may frequently find yourself
in the upper layer of the clouds. The radiation here is intense through the
effects of light diffraction. The risks are therefore even higher than in fine
weather.
3. THE MOST COMMON DISORDERS
 Photokeratitis or snow blindness
Cause: Erosion of the epithelium (layer of surface cells) covering the
cornea resulting from extended exposure to intense light (high UVB
radiation).
Symptoms: 4 to 6 hrs after exposure
Pain and "grains of sand" sensation under the eyelids together with
photophobia (pain increased by light).
Conjunctival redness, excessive tear secretion, swelling of the eyelids and
difficulty opening the eyes, as well as intense blepharospasm (involuntary
blinking of the eye).
Treatment: rest in a dark room / eye patch / application of antiseptic eye
wash and ophthalmic ointment.
Avoid eye washes containing anaesthetics.
Contact lenses must not be worn for 4 to 5 days.
 Erythropsia
Cause: Exhaustion of the retina resulting from prolonged exposure to
intense light stimulation. This disorder is rarer than snow blindness.
Symptoms: Objects take on an abnormal reddish hue.
Treatment:
● rest in a dark room
● eye patch
● application of antiseptic eye wash and ophthalmic ointment.
Snow blindness and erythropsia do not have long-term after-effects if
treated in time. However, snow blindness can endanger the lives of
mountaineers in high-mountain environments by depriving them of their
vision.
 White-out syndrome
Cause: frostbite of the eye or eyelids as a result of being in extremely cold
conditions.
Symptoms:
Initial symptoms: pain, blurred vision, photophobia and excessive tear
secretion, or even total loss of vision.
Later symptoms: reduced visual acuity associated with a loss of
perception of relief and elevation resulting in disorientation and sensations
of vertigo.
Treatment: protecting the eyes from cold and warming them up should
ensure good recovery.
 Corneal frostbite
Cause: the temperature of the cornea is between 29 and 36 °C. Extreme
cold and/or snow combined with wind can lead to frostbite of the cornea.
Symptoms: blurred vision, excessive tear secretion, photophobia or even
total loss of vision.
Later symptoms: reduced visual acuity associated with a loss of
perception of relief and elevation resulting in disorientation and sensations
of vertigo.
Treatment: eye patch and gradual passive heating and removal from cold
(2 to 3 days).
Expedition tip: use a warm teabag to heat up the eye.
Warning: corneal frostbite can lead to necrosis and loss of the eye if not
treated correctly.
4. JULBO SUN SOLUTIONS
All these disorders can be prevented by wearing equipment suitable for the
conditions.
Julbo has developed a range of products specially adapted to these extreme
conditions with category 4 lenses, wraparound frames and protective side
shields.
4 // Julbo lenses
In high-mountain environments, a high degree of sun protection is
necessary and you should opt for category 4 lenses.
Julbo offers the following lenses for these conditions:
Cat. 4 mineral lens (VLT*:7%). The must-have product
for glacier frames. The only lens to offer complete
protection in very high mountain environments.
Recommended for individuals sensitive to infrared light
Cat. 4 polycarbonate lens (VLT* :5%). Designed to offer
powerful protection for mountain trekking and
mountaineering
*Visible light transmission
4 // Julbo lenses
Cat. 2 to 4 NXT© photochromic lens (TLV*: 20-5%). The brown
tint and filtration level have been designed to offer the best
performance for trekking and mountaineering. NTS technology
guarantees a constant photochromic range, whatever the
outside temperature
Cat. 2 to 4 NXT© photochromic lens (TLV*: 42-7%).
Lighter than the Cameleon lens and suitable for skiing and
trail running. Offers good protection at low temperatures
in high-mountain environments.
4 // High-mountain sunglasses
High-mountain frames must provide the wearer with optimum protection.
In addition to the category 4 lens, they must offer good protection against
direct and indirect radiation as well as external elements. They must also
be adapted for use in extreme sports.
A good frame must therefore provide:
- Total coverage / protective side shields.
- A pronounced curve.
- Excellent grip.
- Ideally a headcord.
4 // High-mountain sunglasses: EXPLORER
The highest mountains and extreme conditions bring out the best in
these sunglasses developed in collaboration with the elite climbing
school in Chamonix.
The Explorer takes glacier sunglasses to the next level: lenses with
impressive protection, coverage from damaging UV rays, an anti-fog
ventilation system and side shields to stop wind and snow getting in.
Available in an Alti Arc mineral lens, Cameleon photochromic lens
and Spectron 4 polycarbonate lens.
4 // High-mountain sunglasses: TREK
Trek's mission is to provide highly technical but light equipment for
moving fast in extreme environments and achieving optimum
performance.
It combines the fundamental principles of mountaineering glasses with
the lightness and ergonomics of speed sport sunglasses.
The side shields block radiation in high glare environments such as
glaciers and deserts, while the suspended lens ensures clear vision and
good ventilation.
Available with Cameleon or Zebra lenses for optimum protection from
intense solar radiation.
4 // High-mountain sunglasses: BIVOUAK
The Bivouak has been designed to cope with a huge variety of terrain
and is suitable for every outdoor activity.
With wide Cameleon or Zebra lenses and optimum coverage provided
by the magnetic side shields, these glasses offer protection specifically
adapted to mountain use.
4 // High-mountain sunglasses: MONTEROSA/MONTEBIANCO
With removable side shields, wide lenses and ergonomic design,
MonteRosa and MonteBianco offer total protection.
These frames combine style and simplicity with lightness, technical
excellence and outstanding protection, giving users high-performance
mountain glasses that are also suitable for everyday use.
4 // High-mountain sunglasses: TENSING M/L
The ultra-wrap profile of these glasses provides ideal protection against
high-altitude sun while the side openings guarantee superior ventilation.
These glasses offer excellent value for money and have been designed
so that amateur mountaineers can enjoy their sport in complete safety.
Julbo
Rue Lacuzon
39400 Longchaumois - France
Tel.: + 33 (0)3.84.34.14.14
info@julbo.fr
www.julbo-eyewear.com
Join us on social networks

More Related Content

What's hot

Photochromatic lenses.rajkumar
Photochromatic lenses.rajkumar Photochromatic lenses.rajkumar
Photochromatic lenses.rajkumar Ronak Rajkumar
 
Choosing the Right Glasses For Your Face Shape
Choosing the Right Glasses For Your Face ShapeChoosing the Right Glasses For Your Face Shape
Choosing the Right Glasses For Your Face ShapeC. Marquand
 
Catalog | Meopta 2022 | Optics Trade
Catalog | Meopta 2022 | Optics TradeCatalog | Meopta 2022 | Optics Trade
Catalog | Meopta 2022 | Optics TradeOptics-Trade
 
Depth of field
Depth of fieldDepth of field
Depth of fieldPTV
 
Effects of radiation and glare in eye
Effects of radiation and glare in eyeEffects of radiation and glare in eye
Effects of radiation and glare in eyeHira Dahal
 
Occupational ocular problems
Occupational ocular problems Occupational ocular problems
Occupational ocular problems sabina paudel
 
Difference between filters and tints
Difference between filters and tintsDifference between filters and tints
Difference between filters and tintsIqra Nehal
 
Radiation and its ocular and visual problems.pptx
Radiation and its ocular and visual problems.pptxRadiation and its ocular and visual problems.pptx
Radiation and its ocular and visual problems.pptxAl Amin
 
Coatings applied to spectacle lenses
Coatings applied to spectacle lensesCoatings applied to spectacle lenses
Coatings applied to spectacle lensesSuhail Wahab
 
Introduction to basic photography
Introduction to basic photographyIntroduction to basic photography
Introduction to basic photographyAbdullfikri
 
Hydrafacial presentation, skin, beauty, health
Hydrafacial presentation, skin, beauty, healthHydrafacial presentation, skin, beauty, health
Hydrafacial presentation, skin, beauty, healthLeader Group of Companies
 

What's hot (20)

Photochromatic lenses.rajkumar
Photochromatic lenses.rajkumar Photochromatic lenses.rajkumar
Photochromatic lenses.rajkumar
 
Eye safetyatworkrev
Eye safetyatworkrevEye safetyatworkrev
Eye safetyatworkrev
 
Choosing the Right Glasses For Your Face Shape
Choosing the Right Glasses For Your Face ShapeChoosing the Right Glasses For Your Face Shape
Choosing the Right Glasses For Your Face Shape
 
Pantoscopic tilt
Pantoscopic tiltPantoscopic tilt
Pantoscopic tilt
 
Studio Lighting Basics
Studio Lighting BasicsStudio Lighting Basics
Studio Lighting Basics
 
Catalog | Meopta 2022 | Optics Trade
Catalog | Meopta 2022 | Optics TradeCatalog | Meopta 2022 | Optics Trade
Catalog | Meopta 2022 | Optics Trade
 
Lighting
LightingLighting
Lighting
 
Ocular Hazards
Ocular HazardsOcular Hazards
Ocular Hazards
 
Drug presentation on diamox
Drug presentation on diamoxDrug presentation on diamox
Drug presentation on diamox
 
Depth of field
Depth of fieldDepth of field
Depth of field
 
Eye safety at work
Eye safety at workEye safety at work
Eye safety at work
 
Effects of radiation and glare in eye
Effects of radiation and glare in eyeEffects of radiation and glare in eye
Effects of radiation and glare in eye
 
Occupational ocular problems
Occupational ocular problems Occupational ocular problems
Occupational ocular problems
 
Safety eye wear
Safety eye wearSafety eye wear
Safety eye wear
 
Difference between filters and tints
Difference between filters and tintsDifference between filters and tints
Difference between filters and tints
 
Radiation and its ocular and visual problems.pptx
Radiation and its ocular and visual problems.pptxRadiation and its ocular and visual problems.pptx
Radiation and its ocular and visual problems.pptx
 
Coatings applied to spectacle lenses
Coatings applied to spectacle lensesCoatings applied to spectacle lenses
Coatings applied to spectacle lenses
 
Introduction to basic photography
Introduction to basic photographyIntroduction to basic photography
Introduction to basic photography
 
Hydrafacial presentation, skin, beauty, health
Hydrafacial presentation, skin, beauty, healthHydrafacial presentation, skin, beauty, health
Hydrafacial presentation, skin, beauty, health
 
Color theory .
Color theory .Color theory .
Color theory .
 

Similar to High-mountain sun protection

The dangers of solar radiation for children's eyes
The dangers of solar radiation for children's eyesThe dangers of solar radiation for children's eyes
The dangers of solar radiation for children's eyesjulbo-eyewear
 
The sun and our eyes: protection against sunlight
 The sun and our eyes: protection against sunlight  The sun and our eyes: protection against sunlight
The sun and our eyes: protection against sunlight julbo-eyewear
 
Sunglasses how to choose the best lenses
Sunglasses  how to choose the best lensesSunglasses  how to choose the best lenses
Sunglasses how to choose the best lensesOliviaDunn9
 
Types of spectacle lenses
Types of spectacle lensesTypes of spectacle lenses
Types of spectacle lensesMehedi Hasan
 
Sunglasses & Their UV protection
Sunglasses & Their UV protectionSunglasses & Their UV protection
Sunglasses & Their UV protectionShroffEyeMumbai
 
Side effects of bright light.pptx
Side effects of bright light.pptxSide effects of bright light.pptx
Side effects of bright light.pptxraniaasaad3
 
Visual health among welders and laser workers
Visual health among welders and laser workersVisual health among welders and laser workers
Visual health among welders and laser workersSUCHETAMITRA2
 
Julbo Training Snow 2021-22
Julbo Training Snow 2021-22Julbo Training Snow 2021-22
Julbo Training Snow 2021-22julbo-eyewear
 
'The Recce'
'The Recce''The Recce'
'The Recce'Meg Lily
 
Illumination In opencast mining the needs
Illumination In opencast mining  the needs Illumination In opencast mining  the needs
Illumination In opencast mining the needs Arunachalam Iyer
 
Photochromic Lenses
Photochromic LensesPhotochromic Lenses
Photochromic LensesZahida Zia
 
Laser and operating room safety
Laser and operating room safetyLaser and operating room safety
Laser and operating room safetychadhameenu
 

Similar to High-mountain sun protection (20)

The dangers of solar radiation for children's eyes
The dangers of solar radiation for children's eyesThe dangers of solar radiation for children's eyes
The dangers of solar radiation for children's eyes
 
The sun and our eyes: protection against sunlight
 The sun and our eyes: protection against sunlight  The sun and our eyes: protection against sunlight
The sun and our eyes: protection against sunlight
 
Lens enhancement
Lens enhancementLens enhancement
Lens enhancement
 
Sunglasses how to choose the best lenses
Sunglasses  how to choose the best lensesSunglasses  how to choose the best lenses
Sunglasses how to choose the best lenses
 
spectacles.pptx
spectacles.pptxspectacles.pptx
spectacles.pptx
 
Julbo lenses
Julbo lensesJulbo lenses
Julbo lenses
 
Types of spectacle lenses
Types of spectacle lensesTypes of spectacle lenses
Types of spectacle lenses
 
SUN 22 Training
SUN 22 TrainingSUN 22 Training
SUN 22 Training
 
Sunglasses & Their UV protection
Sunglasses & Their UV protectionSunglasses & Their UV protection
Sunglasses & Their UV protection
 
Side effects of bright light.pptx
Side effects of bright light.pptxSide effects of bright light.pptx
Side effects of bright light.pptx
 
Visual health among welders and laser workers
Visual health among welders and laser workersVisual health among welders and laser workers
Visual health among welders and laser workers
 
Absorptive lenses
Absorptive lenses Absorptive lenses
Absorptive lenses
 
Julbo Training Snow 2021-22
Julbo Training Snow 2021-22Julbo Training Snow 2021-22
Julbo Training Snow 2021-22
 
SUN 2021 Training
SUN 2021 TrainingSUN 2021 Training
SUN 2021 Training
 
Beyond the image
Beyond the imageBeyond the image
Beyond the image
 
Scleral lenses
Scleral lensesScleral lenses
Scleral lenses
 
'The Recce'
'The Recce''The Recce'
'The Recce'
 
Illumination In opencast mining the needs
Illumination In opencast mining  the needs Illumination In opencast mining  the needs
Illumination In opencast mining the needs
 
Photochromic Lenses
Photochromic LensesPhotochromic Lenses
Photochromic Lenses
 
Laser and operating room safety
Laser and operating room safetyLaser and operating room safety
Laser and operating room safety
 

More from julbo-eyewear

RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024julbo-eyewear
 
RX Lab | Sport et solaires à la vue | Julbo Formation 2024
RX Lab | Sport et solaires à la vue | Julbo Formation 2024RX Lab | Sport et solaires à la vue | Julbo Formation 2024
RX Lab | Sport et solaires à la vue | Julbo Formation 2024julbo-eyewear
 
Training Snow 2023-24
Training Snow 2023-24Training Snow 2023-24
Training Snow 2023-24julbo-eyewear
 
Formation SNOW 23-24
Formation SNOW 23-24Formation SNOW 23-24
Formation SNOW 23-24julbo-eyewear
 
Formation BIKE 2023_FR
Formation BIKE 2023_FRFormation BIKE 2023_FR
Formation BIKE 2023_FRjulbo-eyewear
 
RX Lab | Sport et solaires à la vue | JULBO Formation 2022
RX Lab | Sport et solaires à la vue | JULBO Formation 2022RX Lab | Sport et solaires à la vue | JULBO Formation 2022
RX Lab | Sport et solaires à la vue | JULBO Formation 2022julbo-eyewear
 
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022julbo-eyewear
 
RX LAB | Gafas de sol y deportivas con graduación
RX LAB | Gafas de sol y deportivas con graduaciónRX LAB | Gafas de sol y deportivas con graduación
RX LAB | Gafas de sol y deportivas con graduaciónjulbo-eyewear
 
RX LAB | Sport & Sonnenbrillen mit Sehstärke
RX LAB | Sport & Sonnenbrillen mit SehstärkeRX LAB | Sport & Sonnenbrillen mit Sehstärke
RX LAB | Sport & Sonnenbrillen mit Sehstärkejulbo-eyewear
 
RX LAB | Sport e occhiali da sole graduati
RX LAB | Sport e occhiali da sole graduatiRX LAB | Sport e occhiali da sole graduati
RX LAB | Sport e occhiali da sole graduatijulbo-eyewear
 
RX LAB Training | Sport and prescription sunglasses
RX LAB Training | Sport and prescription sunglassesRX LAB Training | Sport and prescription sunglasses
RX LAB Training | Sport and prescription sunglassesjulbo-eyewear
 
RX Lab | Sport et solaires à la vue
RX Lab | Sport et solaires à la vueRX Lab | Sport et solaires à la vue
RX Lab | Sport et solaires à la vuejulbo-eyewear
 
RX Lab Sport-Zonnebrillen op sterkte
RX Lab Sport-Zonnebrillen op sterkteRX Lab Sport-Zonnebrillen op sterkte
RX Lab Sport-Zonnebrillen op sterktejulbo-eyewear
 
Julbo Schulung SNOW 21-22
Julbo Schulung SNOW 21-22Julbo Schulung SNOW 21-22
Julbo Schulung SNOW 21-22julbo-eyewear
 
Julbo Formation Snow 2021-22
Julbo Formation Snow 2021-22Julbo Formation Snow 2021-22
Julbo Formation Snow 2021-22julbo-eyewear
 

More from julbo-eyewear (20)

RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2024
 
RX Lab | Sport et solaires à la vue | Julbo Formation 2024
RX Lab | Sport et solaires à la vue | Julbo Formation 2024RX Lab | Sport et solaires à la vue | Julbo Formation 2024
RX Lab | Sport et solaires à la vue | Julbo Formation 2024
 
Training Snow 2023-24
Training Snow 2023-24Training Snow 2023-24
Training Snow 2023-24
 
Schulung SNOW 23-24
Schulung SNOW 23-24Schulung SNOW 23-24
Schulung SNOW 23-24
 
Formation SNOW 23-24
Formation SNOW 23-24Formation SNOW 23-24
Formation SNOW 23-24
 
Formation BIKE 2023_FR
Formation BIKE 2023_FRFormation BIKE 2023_FR
Formation BIKE 2023_FR
 
SCHULUNG SUN 2023
SCHULUNG SUN 2023SCHULUNG SUN 2023
SCHULUNG SUN 2023
 
Training SUN 2023
Training SUN 2023Training SUN 2023
Training SUN 2023
 
Formation SUN 2023
Formation SUN 2023Formation SUN 2023
Formation SUN 2023
 
RX Lab | Sport et solaires à la vue | JULBO Formation 2022
RX Lab | Sport et solaires à la vue | JULBO Formation 2022RX Lab | Sport et solaires à la vue | JULBO Formation 2022
RX Lab | Sport et solaires à la vue | JULBO Formation 2022
 
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022
RX LAB Training | Sport and prescription sunglasses | JULBO Training 2022
 
RX LAB | Gafas de sol y deportivas con graduación
RX LAB | Gafas de sol y deportivas con graduaciónRX LAB | Gafas de sol y deportivas con graduación
RX LAB | Gafas de sol y deportivas con graduación
 
RX LAB | Sport & Sonnenbrillen mit Sehstärke
RX LAB | Sport & Sonnenbrillen mit SehstärkeRX LAB | Sport & Sonnenbrillen mit Sehstärke
RX LAB | Sport & Sonnenbrillen mit Sehstärke
 
RX LAB | Sport e occhiali da sole graduati
RX LAB | Sport e occhiali da sole graduatiRX LAB | Sport e occhiali da sole graduati
RX LAB | Sport e occhiali da sole graduati
 
RX LAB Training | Sport and prescription sunglasses
RX LAB Training | Sport and prescription sunglassesRX LAB Training | Sport and prescription sunglasses
RX LAB Training | Sport and prescription sunglasses
 
RX Lab | Sport et solaires à la vue
RX Lab | Sport et solaires à la vueRX Lab | Sport et solaires à la vue
RX Lab | Sport et solaires à la vue
 
RX Lab Sport-Zonnebrillen op sterkte
RX Lab Sport-Zonnebrillen op sterkteRX Lab Sport-Zonnebrillen op sterkte
RX Lab Sport-Zonnebrillen op sterkte
 
Julbo Schulung SNOW 21-22
Julbo Schulung SNOW 21-22Julbo Schulung SNOW 21-22
Julbo Schulung SNOW 21-22
 
Julbo Formation Snow 2021-22
Julbo Formation Snow 2021-22Julbo Formation Snow 2021-22
Julbo Formation Snow 2021-22
 
SUN 2021 Training
SUN 2021 TrainingSUN 2021 Training
SUN 2021 Training
 

Recently uploaded

CAD CAM DENTURES IN PROSTHODONTICS : Dental advancements
CAD CAM DENTURES IN PROSTHODONTICS : Dental advancementsCAD CAM DENTURES IN PROSTHODONTICS : Dental advancements
CAD CAM DENTURES IN PROSTHODONTICS : Dental advancementsNaveen Gokul Dr
 
Cytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose Academics
Cytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose AcademicsCytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose Academics
Cytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose AcademicsMedicoseAcademics
 
Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...
Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...
Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...anushka vermaI11
 
DR. Neha Mehta Best Psychologist.in India
DR. Neha Mehta Best Psychologist.in IndiaDR. Neha Mehta Best Psychologist.in India
DR. Neha Mehta Best Psychologist.in IndiaNehamehta128467
 
Overview on the Automatic pill identifier
Overview on the Automatic pill identifierOverview on the Automatic pill identifier
Overview on the Automatic pill identifierNidhi Joshi
 
Video capsule endoscopy (VCE ) in children
Video capsule endoscopy (VCE ) in childrenVideo capsule endoscopy (VCE ) in children
Video capsule endoscopy (VCE ) in childrenRaju678948
 
Signs It’s Time for Physiotherapy Sessions Prioritizing Wellness
Signs It’s Time for Physiotherapy Sessions Prioritizing WellnessSigns It’s Time for Physiotherapy Sessions Prioritizing Wellness
Signs It’s Time for Physiotherapy Sessions Prioritizing WellnessGokuldas Hospital
 
TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...
TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...
TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...marcuskenyatta275
 
Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...
Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...
Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...Call Girls in Nagpur High Profile Call Girls
 
Treatment Choices for Slip Disc at Gokuldas Hospital
Treatment Choices for Slip Disc at Gokuldas HospitalTreatment Choices for Slip Disc at Gokuldas Hospital
Treatment Choices for Slip Disc at Gokuldas HospitalGokuldas Hospital
 
Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...
Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...
Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...Neelam SharmaI11
 
Sell 5cladba adbb JWH-018 5FADB in stock
Sell 5cladba adbb JWH-018 5FADB in stockSell 5cladba adbb JWH-018 5FADB in stock
Sell 5cladba adbb JWH-018 5FADB in stocktammysayles9
 
SEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdf
SEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdfSEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdf
SEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdfSachin Sharma
 
Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...
Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...
Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...Neelam SharmaI11
 
JOURNAL CLUB PRESENTATION TEMPLATE DOCUMENT
JOURNAL CLUB PRESENTATION TEMPLATE DOCUMENTJOURNAL CLUB PRESENTATION TEMPLATE DOCUMENT
JOURNAL CLUB PRESENTATION TEMPLATE DOCUMENTThomas Onyango Kirengo
 
Stereochemistry & Asymmetric Synthesis.pptx
Stereochemistry & Asymmetric Synthesis.pptxStereochemistry & Asymmetric Synthesis.pptx
Stereochemistry & Asymmetric Synthesis.pptxAkanshaBhatnagar7
 
ESC HF 2024 Spotlights Day-2.pptx heart failure
ESC HF 2024 Spotlights Day-2.pptx heart failureESC HF 2024 Spotlights Day-2.pptx heart failure
ESC HF 2024 Spotlights Day-2.pptx heart failuremahiavy26
 
Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...
Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...
Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...anushka vermaI11
 
NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019
NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019
NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019Akash Agnihotri
 

Recently uploaded (20)

CAD CAM DENTURES IN PROSTHODONTICS : Dental advancements
CAD CAM DENTURES IN PROSTHODONTICS : Dental advancementsCAD CAM DENTURES IN PROSTHODONTICS : Dental advancements
CAD CAM DENTURES IN PROSTHODONTICS : Dental advancements
 
Cytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose Academics
Cytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose AcademicsCytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose Academics
Cytoskeleton and Cell Inclusions - Dr Muhammad Ali Rabbani - Medicose Academics
 
Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...
Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...
Bhimrad + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x...
 
DR. Neha Mehta Best Psychologist.in India
DR. Neha Mehta Best Psychologist.in IndiaDR. Neha Mehta Best Psychologist.in India
DR. Neha Mehta Best Psychologist.in India
 
Overview on the Automatic pill identifier
Overview on the Automatic pill identifierOverview on the Automatic pill identifier
Overview on the Automatic pill identifier
 
Video capsule endoscopy (VCE ) in children
Video capsule endoscopy (VCE ) in childrenVideo capsule endoscopy (VCE ) in children
Video capsule endoscopy (VCE ) in children
 
Best medicine 100% Effective&Safe Mifepristion ௵+918133066128௹Abortion pills ...
Best medicine 100% Effective&Safe Mifepristion ௵+918133066128௹Abortion pills ...Best medicine 100% Effective&Safe Mifepristion ௵+918133066128௹Abortion pills ...
Best medicine 100% Effective&Safe Mifepristion ௵+918133066128௹Abortion pills ...
 
Signs It’s Time for Physiotherapy Sessions Prioritizing Wellness
Signs It’s Time for Physiotherapy Sessions Prioritizing WellnessSigns It’s Time for Physiotherapy Sessions Prioritizing Wellness
Signs It’s Time for Physiotherapy Sessions Prioritizing Wellness
 
TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...
TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...
TEST BANK For Huether and McCance's Understanding Pathophysiology, Canadian 2...
 
Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...
Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...
Young & Hot ℂall Girls Salem 8250077686 WhatsApp Number Best Rates of Surat ℂ...
 
Treatment Choices for Slip Disc at Gokuldas Hospital
Treatment Choices for Slip Disc at Gokuldas HospitalTreatment Choices for Slip Disc at Gokuldas Hospital
Treatment Choices for Slip Disc at Gokuldas Hospital
 
Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...
Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...
Young & Hot Surat ℂall Girls Dindoli 8527049040 WhatsApp AnyTime Best Surat ℂ...
 
Sell 5cladba adbb JWH-018 5FADB in stock
Sell 5cladba adbb JWH-018 5FADB in stockSell 5cladba adbb JWH-018 5FADB in stock
Sell 5cladba adbb JWH-018 5FADB in stock
 
SEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdf
SEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdfSEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdf
SEMESTER-V CHILD HEALTH NURSING-UNIT-1-INTRODUCTION.pdf
 
Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...
Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...
Young & Hot Surat ℂall Girls Vesu 8527049040 WhatsApp AnyTime Best Surat ℂall...
 
JOURNAL CLUB PRESENTATION TEMPLATE DOCUMENT
JOURNAL CLUB PRESENTATION TEMPLATE DOCUMENTJOURNAL CLUB PRESENTATION TEMPLATE DOCUMENT
JOURNAL CLUB PRESENTATION TEMPLATE DOCUMENT
 
Stereochemistry & Asymmetric Synthesis.pptx
Stereochemistry & Asymmetric Synthesis.pptxStereochemistry & Asymmetric Synthesis.pptx
Stereochemistry & Asymmetric Synthesis.pptx
 
ESC HF 2024 Spotlights Day-2.pptx heart failure
ESC HF 2024 Spotlights Day-2.pptx heart failureESC HF 2024 Spotlights Day-2.pptx heart failure
ESC HF 2024 Spotlights Day-2.pptx heart failure
 
Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...
Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...
Kamrej + ℂall Girls Serviℂe Surat (Adult Only) 8849756361 Esℂort Serviℂe 24x7...
 
NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019
NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019
NDCT Rules, 2019: An Overview | New Drugs and Clinical Trial Rules 2019
 

High-mountain sun protection

  • 2. CONTENTS 1. Introduction 2. The dangers of the sun in high-mountain environments 3. The most common disorders 4. Julbo sun solutions
  • 3. Anyone who practices high-mountain sports must be aware that they are operating in a risky environment. While the risks linked to the mountains themselves may be obvious, those caused by exposure to the sun at high altitudes are more difficult to understand. Julbo sheds some light on the subject. Since the 1950s and the release of its famous Vermont, Julbo sunglasses have accompanied expeditions up all the mountains of the world. From the Antarctic to the Alps to 8,000 m Himalayan peaks, Julbo has honed its expertise in high-mountain sun protection to become a benchmark brand in this area. Julbo shares its experience to make sure you have the best possible protection for high-mountain environments.
  • 4. 2. THE DANGERS OF THE SUN IN HIGH-MOUNTAIN ENVIRONMENTS Exposure to solar radiation increases on average by 10% (between 4 and 16%) with every 1,000 m of altitude, and the UVB light it contains is particularly dangerous. In addition, the snow often present in the mountains reflects between 80 and 90% of solar radiation compared with 20% on non-snowy ground. The intensity of solar radiation is therefore 1.5 times greater at 2,000 m and 2.5 times greater at 4,000 m than at sea level.
  • 5. Exposure will vary depending on the thickness of the ozone layer in the atmosphere (which acts as a natural filter), the season and the angle of incidence of the sun's rays. It should be noted that solar radiation is 25% greater at the autumn equinox than the spring equinox when the ozone layer is thicker. The ozone layer varies in thickness depending on where you are in world and therefore offers differing degrees of protection.
  • 6. The amount of radiation varies as the sun's position changes during the course of the day. The risks linked to light will therefore also vary. The angle of incidence of the sun's rays when they penetrate the ozone layer has a direct effect on the amount of filtration provided by the ozone. It is for this reason that radiation is strongest between 10 am and 3 pm.
  • 7. It is important to remember that in cloudy conditions the sun is still dangerous in the mountains. You should not count on overcast skies to protect you as they provide only limited filtration. While UV light can be stopped by some clouds (alto-cumulus), cirrus clouds have no filtration effect at all. 50% of the sun's radiation passes through fog. It is therefore necessary to protect yourself in the mountains, even when conditions are cloudy. At high altitude, in overcast conditions, you may frequently find yourself in the upper layer of the clouds. The radiation here is intense through the effects of light diffraction. The risks are therefore even higher than in fine weather.
  • 8. 3. THE MOST COMMON DISORDERS  Photokeratitis or snow blindness Cause: Erosion of the epithelium (layer of surface cells) covering the cornea resulting from extended exposure to intense light (high UVB radiation). Symptoms: 4 to 6 hrs after exposure Pain and "grains of sand" sensation under the eyelids together with photophobia (pain increased by light). Conjunctival redness, excessive tear secretion, swelling of the eyelids and difficulty opening the eyes, as well as intense blepharospasm (involuntary blinking of the eye). Treatment: rest in a dark room / eye patch / application of antiseptic eye wash and ophthalmic ointment. Avoid eye washes containing anaesthetics. Contact lenses must not be worn for 4 to 5 days.
  • 9.  Erythropsia Cause: Exhaustion of the retina resulting from prolonged exposure to intense light stimulation. This disorder is rarer than snow blindness. Symptoms: Objects take on an abnormal reddish hue. Treatment: ● rest in a dark room ● eye patch ● application of antiseptic eye wash and ophthalmic ointment. Snow blindness and erythropsia do not have long-term after-effects if treated in time. However, snow blindness can endanger the lives of mountaineers in high-mountain environments by depriving them of their vision.
  • 10.  White-out syndrome Cause: frostbite of the eye or eyelids as a result of being in extremely cold conditions. Symptoms: Initial symptoms: pain, blurred vision, photophobia and excessive tear secretion, or even total loss of vision. Later symptoms: reduced visual acuity associated with a loss of perception of relief and elevation resulting in disorientation and sensations of vertigo. Treatment: protecting the eyes from cold and warming them up should ensure good recovery.
  • 11.  Corneal frostbite Cause: the temperature of the cornea is between 29 and 36 °C. Extreme cold and/or snow combined with wind can lead to frostbite of the cornea. Symptoms: blurred vision, excessive tear secretion, photophobia or even total loss of vision. Later symptoms: reduced visual acuity associated with a loss of perception of relief and elevation resulting in disorientation and sensations of vertigo. Treatment: eye patch and gradual passive heating and removal from cold (2 to 3 days). Expedition tip: use a warm teabag to heat up the eye. Warning: corneal frostbite can lead to necrosis and loss of the eye if not treated correctly.
  • 12. 4. JULBO SUN SOLUTIONS All these disorders can be prevented by wearing equipment suitable for the conditions. Julbo has developed a range of products specially adapted to these extreme conditions with category 4 lenses, wraparound frames and protective side shields.
  • 13. 4 // Julbo lenses In high-mountain environments, a high degree of sun protection is necessary and you should opt for category 4 lenses. Julbo offers the following lenses for these conditions: Cat. 4 mineral lens (VLT*:7%). The must-have product for glacier frames. The only lens to offer complete protection in very high mountain environments. Recommended for individuals sensitive to infrared light Cat. 4 polycarbonate lens (VLT* :5%). Designed to offer powerful protection for mountain trekking and mountaineering *Visible light transmission
  • 14. 4 // Julbo lenses Cat. 2 to 4 NXT© photochromic lens (TLV*: 20-5%). The brown tint and filtration level have been designed to offer the best performance for trekking and mountaineering. NTS technology guarantees a constant photochromic range, whatever the outside temperature Cat. 2 to 4 NXT© photochromic lens (TLV*: 42-7%). Lighter than the Cameleon lens and suitable for skiing and trail running. Offers good protection at low temperatures in high-mountain environments.
  • 15. 4 // High-mountain sunglasses High-mountain frames must provide the wearer with optimum protection. In addition to the category 4 lens, they must offer good protection against direct and indirect radiation as well as external elements. They must also be adapted for use in extreme sports. A good frame must therefore provide: - Total coverage / protective side shields. - A pronounced curve. - Excellent grip. - Ideally a headcord.
  • 16. 4 // High-mountain sunglasses: EXPLORER The highest mountains and extreme conditions bring out the best in these sunglasses developed in collaboration with the elite climbing school in Chamonix. The Explorer takes glacier sunglasses to the next level: lenses with impressive protection, coverage from damaging UV rays, an anti-fog ventilation system and side shields to stop wind and snow getting in. Available in an Alti Arc mineral lens, Cameleon photochromic lens and Spectron 4 polycarbonate lens.
  • 17. 4 // High-mountain sunglasses: TREK Trek's mission is to provide highly technical but light equipment for moving fast in extreme environments and achieving optimum performance. It combines the fundamental principles of mountaineering glasses with the lightness and ergonomics of speed sport sunglasses. The side shields block radiation in high glare environments such as glaciers and deserts, while the suspended lens ensures clear vision and good ventilation. Available with Cameleon or Zebra lenses for optimum protection from intense solar radiation.
  • 18. 4 // High-mountain sunglasses: BIVOUAK The Bivouak has been designed to cope with a huge variety of terrain and is suitable for every outdoor activity. With wide Cameleon or Zebra lenses and optimum coverage provided by the magnetic side shields, these glasses offer protection specifically adapted to mountain use.
  • 19. 4 // High-mountain sunglasses: MONTEROSA/MONTEBIANCO With removable side shields, wide lenses and ergonomic design, MonteRosa and MonteBianco offer total protection. These frames combine style and simplicity with lightness, technical excellence and outstanding protection, giving users high-performance mountain glasses that are also suitable for everyday use.
  • 20. 4 // High-mountain sunglasses: TENSING M/L The ultra-wrap profile of these glasses provides ideal protection against high-altitude sun while the side openings guarantee superior ventilation. These glasses offer excellent value for money and have been designed so that amateur mountaineers can enjoy their sport in complete safety.
  • 21. Julbo Rue Lacuzon 39400 Longchaumois - France Tel.: + 33 (0)3.84.34.14.14 info@julbo.fr www.julbo-eyewear.com Join us on social networks