If you’re extremely light-sensitive, you ‘re likely to see sunglasses as an accessory to your outfit or a luxury you can do without if you lose them when you leave your house. The reality is that sunglasses are an essential piece of safety equipment that everybody can wear. Recent reports have shown that the prevalence of cataracts, glaucoma, macular degeneration, and other eye disorders is increasing and the average age of those affected is dropping.
Optometrists suggest that everybody wears shades, even on gloomy days, because much like our bodies, our eyes will get sunburned, and it can lead to long-term harm and a greater risk of eye issues as we’re older.
Besides the average person knocking around town on a sunny day, sunglasses are essential for drivers, hunters, hikers, military personnel, and law enforcement. To these men and women, eyewear is a vital protective device that covers their eyes in ways that go well beyond possible sun exposure. Within this post, we will look at the possible threats to our eyes and how sunglasses can protect us.
Why we wear sunglasses?
Sunglasses, often lovingly referred to as sunglasses, have long been the world’s favorite item of defensive eyewear helping to obstruct dazzling sunshine. Substantially minimizing the harm and distress done to your eyes when exposed to high-energy artificial light, sunglasses become your best friend during long summers. In some situations, sunglasses often act as visual aids to help fix or support people with vision disabilities.
- For visual clarity: Besides convenience, sunglasses have also been known to increase visual visibility due to their defensive role. When you are a patient who has been given mydriatic eye drops, sunglasses of different kinds may be used to make eye exams smoother. Sunglasses should also be used to see better through the sun, removing the haze that is transmitted at certain angles from the surface of the water.
- For fashion trends: Universally, sunglasses were perceived to be a very hip style reference. Each year, different varieties of designer sunglasses make their way into the front line of fashion trends, posing as essential accessories to complete the summer look. Sunglasses are typically seen to add a ‘coolness’ factor to the wearer, depending on the particular shapes in vogue.
- For hiding emotions: Feeling anti-social? Step out with a pair of mirror shades so that you can easily prevent eye contact with someone you’re not referring to. Sunglasses can be used to conceal your feelings for both personal and technical purposes, such as poker.
- For Concealing Abnormalities: Severe vision disability can make the eyes look in the opposite direction all the time, so this awkward condition can be stopped by offering a pair of sunglasses. Alternatively, those with bloodshot eyes, exophthalmos, cataract, nystagmus, dilated or contracted pupils, or even just a black eye due to physical abuse may use sunglasses to hide their eyes.
- For eyes protection: Extended sensitivity to both visible and unseen light elements is particularly detrimental to the skin, and this is where sunglasses come in handy. Sunglasses shield you from UV radiation, which is believed to cause a variety of disorders.
Which type of sunglasses are best?
Many sunglasses are designed to shield our eyes from the adverse effects of the sun. Sometimes the sunglasses labels offer protection against UV light and other forms of natural radiation. It is important to learn what kind of light you need to shield your eyes from, and what kind of light is not inherently harmful.
Recommended Types of Sunglasses:
- Blocks 99 percent of ultraviolet rays
- Ground and polished
- Lens darkness
- Wraparound style
- Gradient lenses
- Mirror coated
- Blocks 90 percent of infrared rays
- Blue light blocking
Ground and polished
Any non-prescription glasses are ground and polished to enhance the appearance of the lenses. Non-prescription lenses that are not ground and polished do not damage the eyes.
You want to make sure that the lenses you buy are made properly. To judge the quality of non-prescription sunglasses, look at something with a rectangular pattern, such as a floor tile. Place your glasses at a safe angle and cover one eye. Slowly push the lenses from side to side, then up and down. If the lines are straight, the lenses are fine. If the lines are wiggling, especially in the center of the lens, try another pair.
Polarized lenses remove transparent glare — sunlight that reflects off shiny surfaces such as concrete, car windows, chromed walls, or snow. They may be particularly useful for driving and fishing.
Polarization has little to do with the absorption of UV rays, but often polarized lenses are often paired with a UV-blocking agent. Check the mark to ensure that the lenses have full UV protection.
The photochromic lenses naturally darken in bright light and become brighter in low light. The rest of the darkening takes place in about half a minute, while the lightening takes approximately five minutes. Photochromic lenses are available in a uniform or gradient tint.
While photochromic lenses can be good UV-absorbent sunglasses (again, this advantage must be mentioned on the label), it takes time for them to adapt to specific light conditions.
Gradient lenses are continuously shaded from the top to the bottom or from the top and bottom to the center. Single gradient lenses (dark at the top and lighter at the bottom) can cut the glare from the sky but allow you to see below. They ‘re good for driving because they don’t block the view of the windshield. However, they are not as good at reducing the light in the icy surroundings or at the beach.
Double-gradient lenses (dark on top and bottom and lighter in the middle) may be ideal for activities where light is filtered out of the water or snow, such as sailing or skiing.
Double-gradient lenses are not approved for driving because they make the windshield look dark.
Blocks 90 percent of infrared rays
Infrared wavelengths are invisible, producing heat. Sunlight has low levels of infrared rays, and infrared is well tolerated by the eye.
Many manufacturers of sunglasses make safety promises for their products dependent on infrared protection, but testing has not shown a near correlation between eye disease and infrared radiation.
Mirror surfaces are thin films of various colored lens coatings. Although they do minimize the amount of visible light reaching your body, do not believe that they can completely shield you from UV radiation.
This is also unclear whether the blue light is detrimental to the retina. The lenses that block all the blue light are usually amber and make your surroundings look yellow or orange. The tint is said to make distant objects appear more distinct, especially in snow or haze. Of this cause, amber sunglasses are popular with skiers, hunters, boaters, and pilots.
Wraparound lenses are designed to prevent the sun from reflecting through the frames and in the eyes.
Research has found that enough UV rays are placed into ordinary eyeglass frames to reduce the advantages of safety lenses. Large-framed sunglasses can shield the eyes at all angles.
A medium lens is perfect for day-to-day use, but if you use glasses in very bright conditions, use a darker lens.
The color and the degree of darkness do not tell you much about the capacity of the lenses to suppress UV radiation.
All sunglasses must meet with the health effect requirements set by the Federal Food and Drug Administration (FDA). Neither lens is completely unbreakable, but plastic lenses are less likely to crack when struck by a projectile or a stone than glass lenses.
Many non-prescription sunglass lenses are made of rubber. Polycarbonate plastic sunglasses, used in many sports, are especially sturdy, but easily scratched. When you buy polycarbonate lenses, look for lenses with scratch-resistant coatings.
Blocks 99 percent of ultraviolet rays
With this option, you can also buy sunglasses. Long-term exposure to ultraviolet ( UV ) radiation in sunlight is associated with cataracts and eye growth, including cancer. UVB radiation is known to be more damaging to the eyes and skin than UVA radiation.
Both plastic and glass lenses absorb some UV light, but UV absorption can be improved by adding chemicals to the lens material during production or by applying special lens coatings.
Search for shades that block 99 percent to 100 percent of all UV rays. Any manufacturers’ labels say “UV absorption up to 400 nm.” This is the same thing as 100% UV absorption.
What to look for when buying sunglasses?
Sunglasses are ubiquitous badges of sophistication, but they are also important to shield your eyes. If you try to choose the perfect pair of sunglasses for you, it lets you exactly what to look for when you browse, rather than what colors you ‘re aesthetically presenting. Good looks are important, but more needs to be known. There are lots of different construction combinations to consider when choosing the right sunglasses, each offering unique benefits worth weighing before you buy. We can ignore looks though, so we’ll help you choose the shape of your face and style of the sunglasses. Write on and buy using the valuable knowledge of our experts.
- UV Protection
- Frame Size
- Lens Technology
- Frame Material
- Lens Tint
- Lens Material
Sunglasses Protect From Radiations
Radiation is one of the key threats of our eyesight and is perhaps the least known. Even the worst infomercials or cheapest convenience store sunglasses are “100 percent UVA and UVB security,” so what does that mean? The dictionary definition of radiation is as follows:
- The mechanism by which energy is released as particles or waves.
- The full cycle in which energy is released by one body transferred through an intermediary medium or vacuum and absorbed by another body.
The main part of this term, as far as the eyes are concerned, is the last four words: “absorbed by another object.” As the sun releases radiation, exposed eyes absorb it and harm will occur. Our eyes are especially vulnerable to sunlight, and the cells in the eye are not recycled nearly as easily as our skin cells are, and damage from solar radiation has long-lasting consequences.
Much like we (should) put sunblocks on when we’re outside to prevent sunburn, we (should) cover our eyes when we’re outside, for the same reason. If we can’t slather lotion on our eyeballs, the next best thing to do is wear sunglasses to contain the most dangerous radiation — ultraviolet. Let’s have a look at the various forms of UV radiation that can do harm to our skin.
As the name suggests, ultraviolet (UV) radiation experiences wavelengths higher than violet light, with the lowest wavelength visible to humans. UV radiation is divided into three types: A, B , and C.
UVA rays account for 95% of Ultraviolet radiation entering the Earth’s surface. UVA rays do not differ in intensity across the year, and while much less intense, they are 30-50 times more abundant than UVB rays. Recent findings have also demonstrated that UVA rays are capable of leading to the growth of skin cancer and photoaging, and have been related to the development of some forms of cataracts.
Such rays are very strong and are the main cause of sunburn and cancer, which can be very harmful to the body. UVB rays range in strength during the year and are much higher in the summer months between 10 a.m. and 4 p.m. – this is the time of year when the Earth’s axial inclination is tilted towards the sun, allowing UVB rays more oriented. While UVB rays are most powerful in the summer, they have the potential to burn or affect the skin and eyes all year round, and their effect is intensified by snow.
The good news is that while this is the most effective and thus theoretically most harmful of the UV spectrum, nearly all of it is absorbed by the ozone layer. The bad news is that the ozone layer is thinning, and there is an growing possibility that UVC will inevitably infiltrate to the atmosphere, followed by a host of severe health threats.
The U.S. Environmental Protection Agency ( EPA) has an impressive sun protection feature on its website, and does a fine job in describing the UV Index. Except at the lowest ranking of 0, the EPA still advises that sun glasses be used.
Sunglasses Frame Sizes
Eye-glasses come in a variety of sizes. Several sizes fit one person, but it is important to be as accurate as possible to ensure a good fit.
Eye-glasses are sized in three sizes, each representing a different section of the lens.
- lens size
- bridge size
- temple length
The size of the lens measures the horizontal width of each lens, ranging from 40 mm to 62 mm. The size of the lens represents only the real size of the lens, without some portion of the frame.
The height of the bridge calculates the distance (connected to the bridge) between the two lenses. The height of the bridge can change based on the form of the particular profile.
The length of the temple determines the scale of the temple from the hinge that links the lens to the end of the rim.
use the chart below to convert your measurement to a frame size that may suit your face.:
|Suggested Frame Size||Face Size (temple to temple)|
|49MM||115MM or 4.5″|
|52MM||127MM or 5″|
|54MM||130MM oir 5.125″|
|55MM||135MM or 5.25″|
|57MM||140MM or 5.5″|
|58MM||146MM or 5.75″|
|61MM||152MM or 6″|