How To Tell If Lenses Are Plastic Or Glass
If you want to be sure if your lenses are made of glass or plastic, the safest bet is to ask the optician from whom you bought the glasses.
In case you cant ask an optician, there are several easy ways to differentiate glass from plastic lenses.
Lightly tap the lens against your teeth or your ring. If the lens emits a high, ringing tone, it is a glass. In contrast, the plastic will have a low thud like sound when tapped.
Glass is much heavier. Generally, glasses with plastic lenses will feel more balanced in hand, while those with glass lenses will be more front heavy.
The glass feels colder to the touch, while plastic feels warmer since it is a better insulator.
Never Too Early Or Too Late
Parents should make sure that UV protection is applied to their childrens glasses since childrens eyes have a clearer lens making them more susceptible to UV damage.
Even if youre currently wearing glasses that dont have a UV coating and dont want to change, you can have it added on.
To find out more about UV lens coatings, speak to an optician.
Choosing Eyeglass Lenses: Is Uv Coating Important
When buying eyeglasses, you may be confused by the number of options you are presented with. Once youve chosen your frames, you will need to decide if you want any of a number of available coatings for the lenses. These choices involve coatings that protect you from the suns rays, but it is important to understand the difference and why UV protection is particularly important for your eyes.
The suns ultraviolet or UV rays are damaging both to the skin and the eyes. For the skin, UVB rays are the most dangerous, but for the eyes, the UVA rays are equally damaging. There is also a third type, UVC, but these are generally blocked from us by the ozone layer. This situation could change in the future, however, due to ozone layer depletion.
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Which Eyeglasses Coatings Are Right For You
The world of lens coatings is diverse, but that doesnt mean choosing the right ones for you has to be hard. Lens coatings give a tailor-made solution to common problems glasses wearers encounter, including eye conditions related to ultraviolet light, scratched lenses, and too much glare. With so many options, you may have questions about which coating is the best for your needs. Below is a quick guide to help you find the right fit.
Why Your Eyes Need Sun Protection
The single most important reason to wear sunglasses is to protect your eyes from the suns ultraviolet rays. Long-term exposure to UV rays has been linked to the development of serious eye issues, including macular degeneration and cataracts.
Protecting your eyes from the suns damaging rays is essential. To do so, wear sunglasses that block nearly 100% of UV rays when you are outside during the day. Even when the skies are cloudy, wear sunglasses as a precaution. You cant depend on the clouds to stop the UV rays from getting through.
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Common Lens Coatings For Glasses
Lens coatings are applied to eyeglass lenses to enhance the durability, performance and appearance of your glasses. This is true whether you wear single vision, bifocal or progressive lenses.
If you’re thinking about purchasing new eyeglasses, you might want to consider the following lens coatings and treatments.
Uv Radiation Risk Factors
Spending time outdoors puts you at risk of UV radiation-related eye conditions. However, your actual UV radiation dose depends on several factors.
Geographic area If youre in a tropical region close to the Earths equator, youll receive an increased amount of UV exposure. As you get farther away from the equator, your risk decreases.
Altitude above the Earth Youll receive greater UV exposure at higher altitudes.
Specific setting In expansive open spaces, youll receive greater UV exposure. This exposure is especially likely when youre in proximity to sand, snow and other reflective surfaces. To illustrate, UV rays reflected off the snow can almost double your exposure.
Time of the day When the sun is at its highest daily position, youll receive more UV exposure. This time generally occurs from 10 a.m. to 2 p.m.
Prescription medications Several types of medications can heighten your sensitivity to UV radiations effects. Examples include sulfa drugs, diuretics, birth control pills, tetracycline and tranquilizers.
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Why Do We Need Uv Protection For Our Eyes
Excessive exposure to UV radiation over a brief period of time may lead to inflammation in your cornea. This is basically a sunburn of the eye and though the symptoms, which include red eyes, a gritty feeling in the eye, pain, sensitivity to light and an increase of tears, are unpleasant, they are mercifully temporary.
However, long-term exposure can result in increasing the risk of individual developing cataracts, retinal damage, Pterygia and macular degeneration.
This why we need to protect our eyes the same way we use sunscreen to protect our skin. UV protection for our eyes is absolutely essential to maintain your vision. While sunglasses seem like the obvious choice and indeed play an important role, a more effective step is to opt to protect yourself when wearing your normal glasses by ensuring that you ask for a UV protective coating on your clear lenses too.
How To Tell If Glasses Are Anti
Nowadays, there are many types of coatings that can be applied to lenses to improve their optical properties. Coatings such as UV-coating, scratch-resistant coating, and anti-fog coating are just a few of many options you can choose from.
In case you are not sure if your glasses have an anti-reflective layer, just hold them to reflect light. If the glare on the lens contains shades of green, turquoise, pink, purple, magenta, blue, or gold, they have an anti-reflective coating. On the other hand, uncoated lenses reflect the same color of light as the light source.
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Lens Materials And Treatments
Most eyewear manufacturers offer several different types of lens materials, each with its own characteristics. Its possible to add extra coatings or treatments that compensate for a lens materials downsides in most cases.
Relatively thick, heavy glass lenses deliver high-level optical clarity. They are also resistant to scratches. However, glass lenses can quickly be shattered or chipped. Besides, these lenses require an extra coating to reach the 100% UV protection threshold.
High-index plastic lenses
These high-tech lenses are very lightweight and will be thinner than comparable glass lenses. Most high-index lenses have 100% UV protection built in. Because the lens material is relatively soft and very reflective, these lenses require scratch-resistant and anti-reflective coatings.
Highly impact-resistant polycarbonate lenses are 100% UV protective, and theyre lighter and thinner than every other lens type. However, polycarbonate lenses need a scratch-resistant coating in addition to a coating that decreases the lenses reflective characteristics.
By minimizing light reflection and glare, polarized sunglasses make colors appear brighter and more saturated. They can also make it easier to see objects below the surface of a lake or stream.
Sunglass lenses frequently contain one or more special-purpose coatings. Adding multiple coatings will often increase the sunglasses price.
Do You Need A Lens Coating
Before deciding if a lens coating is right for you, consider the following:
Your lifestyle. If you will be wearing your new glasses full time, or for night driving, computer use, exercising, sports playing, etc., it may be a good idea to add coatings to your lenses. The coatings will protect your lenses and enhance your vision.
Your budget. Lens coatings can vary in price, depending on the coating you choose so it is important to do your research and keep your budget in mind, before deciding to add any additional coatings. Also, be sure to inquire which coatings are necessary for your specific lenses, as many plastic lenses already come with built-in coatings.
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Treatments And Coatings For Your Glasses
Lens coatings and treatments are applied to the surface of the eyeglass lens itself to help improve performance, protect your eyes from light and / or increase lens durability. There are 4 popular lens coating types you should know about:
Anti Reflective Eyeglass Lenses
AR lenses are characterized by being clearer and having less reflection, fewer reflections, and containing a hydrophobic layer that repels water.
The Advantages of Anti Reflective Lenses include:
- This type of coating cuts glare and permits more light through to your eyes.
- A reduction in the appearance of glare allowing others to see your eyes and facial expressions instead of reflections.
- Anti Reflective coating on your has been demonstrated to reduce eye strain.
- Our AR lenses include an additional coating that repels water and smudges. This hydrophobic layer makes them easier to keep clean.
Scratch Resistant Coating
This type of lens is coated and is characterized as having a much harder surface that is more resistant to scratching.
The advantages of scratch resistant coating include:
- Creates a permanent bond with the lens and provides extra protection to the lens surface.
- Reduces the appearance of hairline scratches.
- Creates a permanent bond with the lens and provides extra protection to the lens surface.
- Reduces the appearance of hairline scratches.
*NOTE: No eyeglass lenses not even those made of glass are scratch-proof!
Blue Light Filter
Top Tips For Choosing The Right Uv Protection
Damage caused by UV light adds up over time, but its never too early or late to start protecting your eyes. Here are some things to keep in mind:
- Prescription glasses with a UV treatment helps keep your eyes safe in cloudy weather, but its still worth having a good pair of sunglasses for brighter days
- Choose frames that offer good coverage of the eye and fit well
- If you regularly change between outdoors and indoors, then glasses with Reactions lenses can save the trouble of having two pairs
- You can still be stylish while staying protected against the sun. We have a range of prescription glasses and sunglasses to suit your individual style from designer to more budget-friendly frames.
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Sunscreen For Our Eyes: Why We Need Uv Protection
Applying sunscreen is a daily occurrence for many of us and for good reason. Overexposure to harmful UV rays can damage our skin and is even linked to skin cancer. However, we often neglect to protect our eyes from these same rays.
With the advances in vision technology, it is now easier than ever before to protect our eyes. Lens coatings like the Crizal range, which protect from UV rays in both the front and back of the lenses can be used to enhance single vision or progressive lenses. Some of the most recommended coatings include anti-reflective, scratch-resistance, anti-fog and of course, arguably the most vital of them all, UV protection.
Eyeglass Lens Coatings: Anti
We all are aware that Lens coatings can greatly improve the appearance of your eyeglass and at the same time, improves the performance. For those who are looking to buy a new pair of eyeglasses or already have a pair, they can now order the new glasses with lens coatings. There are three essential things you must consider when purchasing a new pair, Anti-Reflective, Scratch-Resistant and Ultraviolet rays.
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What Are Eyeglass Lens Coatings And Do You Need Them
After picking out frames and the type of lenses you want for your new eyeglasses, you should decide if a lens coating is right for you. Eyeglass lens coatings can enhance lens performance and can add to the appearance of your new lenses. Here are seven different types of lens coatings and treatments you should consider when purchasing new eyeglasses.
Here Are Our Recommendations When Buying Uv Coating Glasses
It is important to educate yourself before investing your hard-earned money in a product. Before purchasing uv coating glasses, consider the following factors.
Here are some questions you should ask yourself before purchasing an uv coating glasses:
Before purchasing a product, you should ask the following questions. If you still have questions or concerns, please do not hesitate to ask.
The factors we consider important have only been briefly mentioned. You can find detailed answers to many of your questions by doing some research online or visiting the store.
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Ultraviolet Coating Of Glass And Plastic
Glass and plastic can be coated to diminish the amount of ultraviolet radiation that passes through. Common uses of such coating include eyeglasses and automotive windows. Photographic filters remove ultraviolet to prevent exposure of the film or sensor by invisible light. UV curable coatings can be used to impart a variety of properties to polymeric surfaces, including glare reduction, wear or scratch resistance, anti-fogging, microbial resistance, chemical resistance. Computer screens, keyboards, and most other personal electronic devices are treated with some type of UV-curable coating. Coatings are usually applied to plastic substrates via spray, dip, roll, flow and other processes. UV-curable coatings are often specified for plastic parts because the process does not require heat, which can distort the plastic shape.
Prescription Glasses & Sunglasses At Sportrx
Need prescription glasses or sunglasses? Done. When you shop with us, youll find video guides and tooltips throughout the build process as you customize the perfect pair. An answer to all your questions is at your fingertips, and if you want to chat with an expert, Contact Us. Well put you in touch with one of our friendly in-house opticians who can help you build your prescription glasses or sunglasses.
Ditch risky online shopping with the See Better Guarantee. Try your glasses or sunglasses for 45 days. If youre not satisfied, send them back. Get a full refund, exchange, or credit towards a better pair. And return shipping? Covered. Get your pair of prescription glasses or sunglasses at SportRx today!
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What Are Lens Coatings And What Are They Used For
A lens coating consists of treatments added to the lens surface to contribute to its performance, appearance and protection, but also its durability. Another impact is the quality of your vision and the comfort you feel. Indeed, adding a coating has a specific purpose and most of the time it deals with reducing or cancelling an annoying and interfering element.
This additional layer can be applied either on the front side or the back side of the lens. Some treatments can be combined.
It’s important to remember that coatings cannot be added after purchase. Which means you have to request them before ordering from your eyecare professional. When you discuss the Rx version and plano, coatings have to be part of your specification. Once the lens is cut to fit the frames, it’s not possible to add further coatings.
Take care when cleaning your equipment and only use a soft cloth, so as not to damage your sunglass coatings.
What Is Uv Protective Coating And Do You Need It On Your Glasses
Everyone knows that sunscreen, long shirts and even umbrellas can play a role in protecting your face and body from the suns harmful UV raysbut what about UV protective coating on your glasses? Do you actually need a UV protective coating layer or is this just another thing that companies created to upsell when it is time to buy new glasses? The following guide will help you learn more about UV protective coating and whether or not you need it on your glasses.
What is UV Protective Coating?
UV protective coating on glasses works in the same manner as UV protective coating on sunglasses. The primary difference is that the UV protective coating on standard eyeglasses is clear, whereas the coating on sunglasses has a dark tint. Since UV protective coating is not standard on eyeglasses, it must be added specifically due to the request of the buyer. UV protective coating does have an additional cost associated with it, which is why many people wonder whether or not they should add it to their glasses.
Why You Need UV Protective Coating On Your Glasses
It is especially important to have UV protective coating on your glasses if you dont wear sunglasses very often or at all. Sunglasses can play an important role in reducing your risk for sun damage to your eyes, so if you dont wear themor you wear pairs without UV coating on themthen you can help reduce your risk by ensuring that you do have UV protective coating on your traditional glasses.
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Smart Steps Before You Buy
Think about how you use eyeglasses. Indoors and outdoors? For sports or only for reading or desk work? Driving day and night? Your lifestyle and habits should inform your coating decisions.
Put price in perspective. Some types of coating, like those that are anti-reflective , come in a range of prices. But experts say the most expensive option offered isnt necessarily of significantly higher quality. I know some house brands out there that are pretty similar to the premium versions, says master optician Michael Vitale, vice president of membership and technical affairs at The Vision Council.
Ask for an itemized description. In many cases, eyeglass lenses come bundled with certain coatings, commonly those that reduce reflections or bolster scratch resistance. Be sure you dont pay extra for a coating thats already supposed to be part of your package.
Avoid the hard sell. Even if youre buying the glasses from your ophthalmologist, by the time you get to the eyeglass purchase point in the eye exam cycle, youre in a retail environment and may be working with the staff, rather than the doctor, Vitale says.
Be even more cautious about anything that feels high-pressure if youre in an eyeglass store, he says. If you feel pressured, Vitale says, you may want to look elsewhere.
No matter what your warranty says, if a coating starts to degrade within a year, Vitale recommends taking the glasses back to see whether you can get the problem fixed or the glasses replaced.