Progressive and Bifocal Lenses: Vision at Every Distance

As your eyes age, conditions like age-related farsightedness or presbyopia may start to affect your vision. If you already suffer from an eye-related condition or disease, finding eyewear to remedy multiple vision deficiencies can be a hassle. Progressive and bifocal lenses are a perfect eyewear solution for individuals with multiple prescriptions. Progressive and bifocal lenses provide you, the wearer, a transition from near to far distance vision within one lens!

Bifocal vs Progressive Lenses

Seeing your best at every distance is important for maintaining natural and comfortable vision and lifestyle. Age-related onset of conditions like presbyopia cause the main need for progressive or bifocal lenses.

Although, both bifocal and progressive lenses are used to combat the effects of presbyopia and provide comfortable vision for individuals with multiple prescriptions, it is important to review your lifestyle to determine the best option for you.

Progressive lenses provide the most natural vision for the wearer by seamlessly transitioning between near and far prescriptions within the lens. Whereas, a bifocal lens is separated into distinct areas of near-and-far-vision prescriptions.

Consider your lifestyle, the demands of your job, and your personal preference when choosing which type of lens is the best fit.  

Bifocal Lenses

  • Two distinct powers in the lens, one for near vision and one for distance
  • Has a distinct line separating the powers
  • Put user at greater risk for computer vision syndrome (link to our post about cvs or http://www.allaboutvision.com/cvs/)
  • Provide wider lens areas for reading and computer work

Progressive Lenses

  • Seamless progression between all distances of vision
  • No distinction between different powers within the lens
  • Most popular lens for anyone with presbyopia who wears eyeglasses
  • Expanded intermediate zone for better computer vision

Adaptable to your lifestyle

We understand the need for comfortable eyewear adequate for your lifestyle. Due to the popularity of progressive lenses in the past decade, technology advancements have allowed wearers to see their best without adjusting their lifestyle.

Progressive lenses provide wider zones of clear vision to make activities like computer use and reading easier for the wearer. Early progressive lens designs had a soft blur during movement, but today’s progressive lenses have reduced this blur to provide better vision for active wearers. With improved technology, labs are able to condense the size of lenses needed fit the range of RX, power changes, which allows for those who desire a smaller frame to benefit from the advantages of progressive lenses.

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Multifocal Contact Lenses

Multifocal contact lenses are yet another way to tackle presbyopia, a condition making it difficult to focus on objects up close. Presbyopia, or farsightedness, affects nearly 111 million people in the United States with a large effect on individuals in their mid 40’s. If you suffer from near and farsighted vision, you may have thought glasses were your only option for corrective lenses. Think again! Similar to progressive or bifocal lenses you can also wear bifocal or multifocal contact lenses to provide a natural transition between your near and distance vision.

What is presbyopia?

Presbyopia, a very common refractive error often referred to as age-related farsightedness, is a gradual, age-related loss in the ability to clearly view up-close objects. If you begin experiencing eye strain after reading or are holding reading materials at an arm’s length away to clearly view, schedule a visit with us to talk about your vision. While there is no way to stop or reverse the effects of presbyopia, factors that can lead to a higher risk of developing presbyopia include age, medical conditions, and drug use. Our practice offers a wide range of eyecare services, and vision correction including frames, lenses, and contact lens options to fit your vision needs and keep you seeing your best.

Why Use Multifocal Contact Lenses?

Multifocal contact lenses create a more natural viewing for the wearer because both eyes are corrected for distance and near vision. There are a variety of options available for multifocal contact lenses that can be worn depending on your preferences and lifestyle. From single and part-time to everyday use, there is a multifocal contact lens option for you.

If you have started experiencing signs of farsightedness and are interested in multifocal contact lenses, schedule your next appointment today to talk with our team. It is much easier to adjust the multifocal lens correction provided on lower prescription needs. If you have a strong prescription and would like to try multifocal contact lenses, contact our office today.

The Pros and Cons

Pros of Multifocal Contact Lenses

  • Convenient to use
  • Provide a variety of powers in one lens to allow for great vision at all distances
  • Offer a smooth transition between different prescriptions without the distinct lines found in bifocal contact lenses

Cons of Multifocal Contact Lenses

  • Some wearers find their vision is not perfect at both near and distance, in these situations a compromise is made so one distance vision is better than the other.
  • Adjustments are difficult with higher prescriptions
  • More difficult to adjust when compared with standard contact lenses
  • People who suffer from dry eyes may have more difficulty wearing contact lenses, which may not make the multifocal lenses a good solution to their presbyopia.

Types of Multifocal Contact Lenses

Simultaneous Design

The simultaneous vision design provides a gradual change between near and distance vision. Different zones of the lens are made for near, far, and intermediate vision providing a more natural transition and viewing experience.

Concentric and aspheric lenses are the most common simultaneous vision designs. The concentric design allows for the center of the lens to be the primary viewing zone and the rings around it gradually switch between near and distance vision. Aspheric lenses have a more gradual shift in prescription throughout the lens.

Segmented Design

Segmented contact lenses have a bifocal design. The distance vision is in the upper and central parts of the lens and the near vision is in the lower section of the lens. The two zones are separated by a visible line. When the user looks down the contact lens remains in place due to the flattened bottom edge.

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Ready to try out multifocal contact lenses? Give us a call or schedule your next appointment today!

Don’t Forget UV Protection this Winter

Most people think of sunglasses as summer gear, but in some ways it’s even more important to wear sunglasses in certain winter conditions than in the warm summer months.

Thanks to public awareness campaigns about the risks of skin cancer, more people are aware that UV rays and intense sunlight are bad for our skin. Sunblock, clothing, and shade are regularly used to protect us. Do you know that UV rays are damaging to our eyes, too?

Prolonged UV exposure raises risks for:
• Cataracts
• Macular Degeneration
• Pingueculae
• Pterygia
• Photokeratitis

In the warmer months, we think about protection from the sun because we expose so much skin and can experience sunburns when we’re not covered. In the winter, however, people are colder, and bundled up, so they don’t think of the sun as a risk. This is a problem because snow can reflect 80% of UV rays! That means you’re experiencing normal sunlight from being outside, and harsh glares from white surfaces.

The fatiguing effects of winter glares become apparent usually when doing outdoor activities like skiing, snowboarding, or sledding, but driving in bright wintry conditions can also be damaging and dangerous. It’s important to be protected year-round!

When looking for appropriate winter sunwear, remember:

• Good sunglasses offer UV protection, so always be sure to check that they block 100% UVA/UVB rays.
• Larger glasses are in style, which is great because the bigger lens protects more of your eyes and the skin around your eyes from UV damage. Look for a large lens and wraparound style.
• Don’t worry about the color or darkness of the lens. Those things can vary while still providing adequate UV protection. Check the label for that information, or speak to an optician.
• Remember, polarization is for more than fishermen! Especially in the winter months when ice and snow can cause harsh glares, polarization can be a big help.
• Specialty eyewear exists for all of your favorite winter sports. Be sure your eyes are protected from the sun and safe during sports.

Talk to us if you have any questions about your UV exposure or any specialty eyewear you need to live your active winter lifestyle!

The Pros of Progressive Lenses

Multifocal lenses have made everyday life much easier for people over forty. Bifocals were invented sometime in the 1700s, but trifocals and eventually progressive lenses were later created to give wearers even more functionality. The options are great, but making the choice can be difficult!

If you need multifocal lenses to provide you more than one power, progressive lenses may be a perfect fit. They have many benefits and can work in almost any setting.

Here are some things to consider for your progressive lenses.

How Progressive Lenses Work
Progressive lenses are called “progressive” because they gradually change from one magnification to a stronger one at the bottom of the lens. They progress from a distance vision prescription to an intermediate and then a near-field one. This means that the wearer can look up to the horizon in the upper portion of the lens and see distances clearly, use the middle of the lens to look around their intermediate space, and view reading materials and close up objects through the bottom of the lens. This use of progressive lenses becomes second nature after some adjustment.

Are Progressive Lenses Better than Bifocals?
Many people prefer progressive lenses over bifocals for two reasons. First, bifocals only have two prescription powers. They usually address a farther distance and a close-up reading view. Either an intermediate distance or a certain distance will not be completely clear. Second, some people are distracted by the “image jump” that they see when looking through bifocals. This is caused by the abrupt line where the inset meets the rest of the lens. Some people love bifocals and see no added benefits from progressive lenses, but most people like the versatility of progressive lenses.

Additional Benefits of Modern Progressive Lenses
Multifocal lenses that are not progressive sometimes don’t fit well within a certain frame size. Because lenses have to be cut to fit the frame, the reading portion can end up too big or too small compared to the lens size. Short corridor progressive lenses address this by scaling the reading zones into a more compact area. This means wearers still have their pick of frames and eyeglass shapes.

In addition, specialty progressive eyewear exists to meet certain needs. Computer eyewear can be a great option for people who work at a desktop setting. These lenses do not need the addition of a distance vision section. This means that they allow more room for a close distance focus, and then the rest of the lens is created for the intermediate field. With a computer screen sitting at arm’s length, reading materials up close, and walls at an intermediate distance, these lenses help maximize the eyewear for indoor occupational settings.

Nobody will notice! Some people believe there is a stigma with bifocals because they perceive them as glasses only for senior citizens. Many people even put off getting multifocal lenses because they don’t want to admit that they need them. Progressive lenses help this issue for some people because there is not a visible line like with bifocals. It is unusual for someone to notice that the wearer has progressive lenses unlike the ability to see bifocal lines.

If you have any questions about how progressive lenses can help your eyes see as clearly and comfortably as possible, speak with an optician. There are many options and we can help you narrow down the possibilities so you can make an informed decision.

How to Choose Your Eyeglass Lenses

Eyeglass lens options have grown incredibly in the last several decades. Whereas early eyeglass lenses were made from glass, advancements in lens materials have made them safer, thinner, lighter, and featuring benefits that early inventors never could have imagined!

Glass lenses revolutionized so many aspects of life for people of that time. Glass can provide crisp, clear views, but it is heavy and breakable. It was not uncommon for lenses to break on impact, which could cause someone to lose sight or lose the eye entirely. For that reason, glass is rarely used for eyeglasses today.

In the 1940s, plastic lenses were introduced. Armorlite Lens Company created a lightweight plastic lens made of plastic polymer. It was light, weighing about half as much as a glass lens, and was inexpensive. These plastic lenses were a hit, and are still a common option for eyeglasses today.

Polycarbonate lenses were introduced in the 1970s. Polycarbonate is a highly durable polymer that is impact-resistant, but can scratch. For this reason, the lenses are recommended for children and used in most eyeglasses, but have the addition of a hard coating to deliver greater scratch resistance.

High-index lenses are another lens option that many people aren’t aware of when they begin shopping for eyeglasses. High-index plastic materials make lenses thinner and lighter for people who have a strong prescription. Instead of thick lenses that used to give people fewer options for lenses and make their eyes look distorted from the front, high-index lenses can pack a stronger prescription into a thinner space. This opens more frame options and takes the weight off of your glasses if you have a high prescription!

In addition to lens materials, there are a number of other features that you can add to your lenses for various functionality. For instance, anti-reflective or non-glare treatments are one of the most common upgrades. Often they give added scratch-resistance as well as cutting glares and giving a clearer view of your eyes from the front. Tints are another option you can add to your lenses. For sunglasses, wearers might choose around an 85% tint, but lighter options exist, too. Many lenses can be tinted gray, brown, or yellow. Fashion tints come in rose, blue, green, or even more possibilities. Polarization is a great addition for sunglass lenses, too, because it filters the bright glares that can be uncomfortable, even with sunglass tints.

If you have any questions about the best lenses for your eyes, speak with an optician. They are trained in eyecare products and can assist you with these choices, as well as helping you pick frames that look great on you!

Digital Lenses

The idea of digital lenses may conjure up futuristic, electronic eyewear that gives you heat-detecting vision and the ability to zoom in real life, but the truth is that digital lenses look exactly like traditional lenses in a side-by-side comparison. There are no batteries involved! Also called high-definition or free-form lenses, are much different when you see through them, however.

Every eye is different, so getting digital lenses vs. traditional lenses is like the difference between getting an outfit off the rack and getting something made especially for your body to fit all of your various measurements perfectly. With high-definition digital lenses, the creation process takes into account the position of your pupil, the angle of the lens in the frames, and the shape of your frames. Many wearers also benefit from the ability to create progressive lenses that give you a similar effect to bifocals, but without an obvious line. Wearers find that their eyes are much more comfortable and it’s easier to adapt to the high-definition vision they have using a more gradual transition.

High-definition digital lenses are made with an optimized computer-controlled scanning process which allows for much greater precision than how regular glasses are made. Conventional tools don’t allow for the same sort of control so they can lead to a perfect prescription for your eyes that still feels like it could be sharper. The way conventional lenses are made will sometimes create spots that aren’t as clear, or a bending effect toward the edges of your peripheral vision because of the shape of your glasses. This is not an issue with digital lenses. You will have better peripheral vision, less glare, and improved contrast sensitivity.

To further improve the creation process, your eye care professional will usually take some added measurements based on your frames. This will ensure an exact fit and tailoring to your eye and eyewear choice.

Further considerations for digital lenses include the question of who can benefit from them. The great thing about digital lenses is that everyone can benefit from them! People with difficult prescriptions, astigmatism, and presbyopia (farsightedness) will see the greatest change between traditionally manufactured lenses and their new, high-definition vision with digital lenses.

The next question is one we hear a lot: but how much extra do they cost? Unlike the price difference between a high-definition television and the old tube models, digital lenses are not too much extra. They are more labor-intensive to create, so typically you can expect to pay about 25–35% more for your lenses. Once you become accustomed to the high-definition lenses and sharper vision, you’ll be surprised how inadequate your old lenses seem!

Talk to your eye care professional if you’re interested in getting digital lenses for your eyewear.

How to Pick Your Glasses – From Functional to Fashion-Forward

Picking eyeglasses can be a difficult process of trial and error, especially if you haven’t done it many times before. The problem is that, unlike shopping for clothing where you may have a good idea of what fits you and what your favorite colors and patterns are, people can sometimes be vague on what they want for glasses (or have no idea at all). Few people know the most important factors for getting the right glasses for you: the shape of your face and which glasses will accent that shape, color and design options available to fit your preference, and features that will work best with your lifestyle.

Instead of standing in front of racks of frames and trying them on for what could be hours, consider these things first. Ask an observant friend or your eye care professional if you need help.

Which glasses will look best on you is most reliant on the shape of your face. Take a head-on look in the mirror and notice the shape of your face. Is your face taller and more arrow, or shorter and rounded? Is your face more like a diamond, or maybe a triangle shape? Is the bone structure angular, or do you have soft curves? Once you narrow that down, it’s easier to start shopping. Sometimes it helps to do an internet search and see examples of different face shapes and see which one most closely resembles you.

If your face is small, large frames will make your face look even smaller, and your features will get lost behind your glasses. If you have a larger face, small glasses will look out of proportion and make your eyes appear small. Rounded glasses soften an angular face, but a soft face can look balanced and cool with an edgy pair of angular glasses. It may take a few tries to hit on what style of glasses look good on you, but usually there are several models that will look sharp. You can narrow down your selection further once you decide on the general style that you prefer.

You can also look at trends for frame styles based on age. There’s no reason that a young person can’t wear rimless glasses, or a senior can’t wear something bright, but we tend to see trends that vary by age group. Younger people are choosing old-fashioned styles that have become popular again. Vintage styles like horn-rimmed, Wayfarer, and Clubmaster glasses have become cool unisex styles for younger people who want a classic look. Older women are making fun, youthful looks with black frames and unique, funky shapes that are creative, but still convey their professional status. Older men in particular might like frameless and very thin frames that have a mature and barely-there look.

Next, think about your personality and fashion sense. Are you the kind of person who would enjoy something bold, or do you tend to shy away from being the center of attention? Don’t be afraid to be creative with your selection if it suits you. Many frames come in patterns like plaid or animal print, or offer clear or other modern materials that will make your glasses pop.

What color will look best with your skin tone, hair, eyes, and apparel? Do you have a varied color palette for clothing, or are most of your clothes in similar colors? If you don’t plan on buying a new wardrobe, it’s a good idea to factor in your apparel as well as the overall tone of your skin and hair. Do you wear blue jeans and lots of cool greens, grays, and purples, or are you a more summery, bright yellow and orange palette? For skin tone, warmer colors would be a pink or yellow skin, whereas olive skin falls on the cooler side. Someone with rich brown hair, a more yellow skin tone, and coppery brown eyes might look strange in cool blue frames, for instance.

How dark or fair your skin is will also have an effect on your choice. Darker skin looks good with light colored glasses for a nice contrast, but fair skin looks better with a neutral tone that won’t make them look washed out. People with a medium skin tone can get a slick look with solid, bright colors.

Finally, make sure that you pick glasses that work for your lifestyle. If you’re big on adventure or you have young children who might be after your eyewear, ask about frames that are more durable and able to bend without breaking. Do you usually have to look professional, or can you be casual on a daily basis? If you’re getting one pair of glasses and not multiple pairs, you’ll need to be sure that your final pick can fit your needs and normal daily setting.

If you’re getting ready for your visit and will be picking glasses, wear an outfit that you usually wear, and do your hair and makeup in a way that’s typical for you. Ask your eye care professional for help if you want a second opinion, or get their assistance to narrow down some options. Let a professional help you create a new face!

Photochromic Lenses

Lenses that darken automatically when exposed to various levels of light are called photochromic or light-adaptive lenses. This technology was discovered in the 1960s, but it didn’t really catch on until the 1990s. The convenience of photochromic lenses is huge: they’re basically like getting two complete pairs of glasses—regular glasses and sunglasses—in one!

How the technology works is pretty cool. In glass photochromic lenses, silver compounds are embedded into the lens material. When exposed to varying levels of sunlight, the compounds go through a chemical change that increases their size, allowing them to block out more light. Once the bright sunlight subsides, the molecules return to their normal size. Plastic light-adaptive lenses use similar photochromic molecules to create the darkening effect. The reaction that causes the material to darken as it absorbs varying levels of light is completely reversible which is why the lenses go back to clear or only slightly tinted when the wearer is out of bright sunlight.

The only issue you may encounter with light-adaptive lenses is that the photochromic reaction depends to some extent on temperature. In very hot weather, they may not darken all the way. When you first step into the sunlight, the darkening effect happens in about a minute. Over the next several minutes, they may darken just a little more, until achieving their final darkness after about 15 minutes (which depends on the brand and material of lenses). The first reaction will be drastic and give you more than enough light protection to continue into the sun with your vision protected.

If the final darkness of regular light-adaptive lenses isn’t dark enough for what you need, photochromic sunglasses can help. Their darkness when not in the sunlight is still darker than normal glasses. For that reason, most people don’t use these as their only pair of glasses because they won’t see as well indoors. They are a great option for people like drivers, for example, who spend a large part of their time shielding their eyes from sunlight and can wear their backup glasses in low-light settings. The other reason they’re good for drivers is that most windshields block out the UV light that causes the darkening reaction. With a UV-blocking windshield, bright light coming through your windshield will not cause your lenses to darken, leaving you squinting and straining.

There are some other interesting uses of photochromic technology. One medical application involves tinting for certain shades of red. These lenses can be used for various eye conditions including macular degeneration. Of course, there are further recreational uses of adapting tints, too. Red and green shades are used to make a fashion statement, but yellow and amber tints can be used in hunting and sporting glasses to help increase contrast, especially when it is cloudy. Tints can be applied and used in adaptive lenses in just about any color. Want to see the world through rose-colored glasses? It’s possible!

Talk to your eye care professional to test a pair of photochromic lenses and see how they’ll help make your everyday life a little easier.

Non-Glare Lenses

Non-glare (or anti-reflective) coating is a common and cost-effective feature that many eyeglass wearers elect to have put on their lenses. It’s one of those things that you usually don’t notice or think about when you have it, but you notice when it’s not there!

Non-glare lenses are lenses that have this anti-reflective coating applied to the lens. Anti-reflective coating works by eliminating the reflections of light from the front and back the lens. Typical anti-reflective coating allows 99.5 percent of light to pass through, meaning that there is only a very faint hint of light on the lens even in the brightest conditions. The anti-glare protection allows more light to come through, and results in better vision for you as well as a better view for others. When people look at you, they won’t see a glare off of the lenses of your glasses. Glares off of your glasses can ruin pictures and be distracting to people speaking with you because the glare obscures the view of your eyes.

Beyond the cosmetic reasons, the largest benefits of anti-reflective coating are sharper vision when driving at night, and more comfort when using a computer for long periods of time. You won’t experience a glare from the computer screen, and the sharper vision will mean easier focusing for your eyes.

It’s also a good idea get the anti-reflective coating applied to the back surface of your sunglasses. This helps eliminate glare from sunlight when the sun is behind you. Most AR coatings now also include a layer that prevents water spots, thus making them much easier to clean. There are even coatings that help resist skin oils while also making smudges easier to wipe off.

Glasses that have anti-reflective coating should be given special care, as some lens cleaners contain chemicals that could damage the anti-reflective coating. With any eyewear, make sure you know how to care for your gear to give it a long and useful life. Ask your eye care professional if you have questions about care for your eye wear, or would like to know more about anti-glare options.

Polarized Sunglasses

Squinting into the sun and focusing in bright light is very hard on your eyes. Eye care professionals stress the importance of sunglasses and shading your eyes to protect your vision, but many people aren’t aware of the benefits that come from polarized sunglasses. They’re not just for fishermen to see into the water!

When you’re not on the dock or deck of your boat, you will continue to see the benefits of polarization. Polarized sunglasses can help cut glares off of surfaces like the road in front of you or the hood of your vehicle. Even bright light outdoors or through windows can be mellowed with polarized lenses.

The reason that polarized lenses work is that they cut out certain waves of light. Normal light tends to go in all directions, but light that bounces off of a surface tends to “polarize” and align itself horizontally. So sunlight beating down on the water doesn’t appear as ambient light once it bounces off the water, because it hits that reflective surface and bounces up, glaring into your eyes. Polarized sunglasses are specially made with a vertical polarization so that they cut out that intense reflected light and let you see more of the natural light you’d see if there was no glare. Pretty cool, right? You can even experiment with glasses to see if they’re polarized by holding them out and rotating the lens to see if the glare lessens or not.

Some people may notice instances where polarized lenses are not helpful, however. Cell phone screens, LCD and GPS displays can be more difficult to read. In some cases, much brighter light is something you need to see, like in downhill skiing. A bright patch alerts the skier to ice, and polarization would make it harder to see. But most everyday skiers and snowboarders would like to ease the bright light reflecting off of the snow if they’re not in icy conditions. Other than a few rare occasions, polarized lenses can do a lot to improve your vision for many applications. Ask your eye care professional for help deciding if polarization is right for your eyewear.