Sure, sunglasses might add the final touches to your chic ensemble, but the real reason to purchase your shades is to protect your eyes from the sun. Not only does glare from the sun make it difficult to see, but the UV rays it reflects can cause permanent damage to your eyes and vision. You want to make sure your sunglasses offer optimal protection, fit, comfort and of course, the best possible vision. Here are some things to consider when purchasing your next pair. 

UV Protection

There are two types of UV radiation, UVA and UVB. UVA rays are less intense yet more prevalent than UVB rays, making up 95% of the UV radiation that reaches the surface of the Earth. They have been linked to skin cancer, aging and the development of cataracts. UVB rays are very dangerous to the eyes and are the primary cause of sunburns and cancer. While they are dangerous year round, these rays are more intense during the summer months, especially mid-day between around ten in the morning and four in the afternoon. UVB rays also reflect off of snow, water, sand and concrete. 

The damage caused by UV rays is irreversible and cumulative, building up over a long period of time. This is why it is important to start wearing sunglasses when you are young (also because your eyes are more sensitive at a younger age). You want to make sure your sunglasses block out 100% of UV rays. This is the most important factor to consider when purchasing your sunglasses. 

Additionally, in certain circumstances of intense UV exposure, a condition called keratitis can occur, which is essentially a sunburn on the eye. Symptoms often occur hours after sun exposure and can include temporary vision loss and severe pain. 

Sunglass Lens Options

Once you are certain your sunglass lenses have the requisite UV protection, you can begin to consider other lens possibilities. Here are some other lens options to consider:

Polarized Lenses:

Reduce glare from light reflecting off glass, water, snow, sand or pavement. You should consider polarized lenses if you participate in water or snow sports such as fishing, boating or skiing as the water and snow can create a strong glare. They are also great for comfort while driving by reducing glare and to enhance vision when on the road. 

Tinted Lenses:

Certain lens tints enable you to see better or more comfortably under certain circumstances but you have to be careful. Lens tints can distort or reduce vision and some can even harm your vision by increasing your pupil size which leads to an increase of UV radiation penetrating the eye. Look for lenses with a medium tint that keep your eyes comfortable and do not have a negative impact on your vision. Your optometrists’ office can often make specific tint recommendations depending on your lifestyle or particularly activities (ex. golfing vs fishing) and the health of your eyes (for example, cataracts tend to cause more glare). 

Photochromic Lenses:

Automatically darken when exposed to UV light. Photochromic lenses are a great option for individuals that wear prescription eyeglasses: one pair can serve you both indoors and outdoors. As soon as you step outside, the lenses will darken, and they’ll reverse when you go back indoors. 

Lens Materials

There are also a few options when it comes to lens materials, such as plastics – including polycarbonate or acetate; trivex – which is a polymer material; or glass. The type of lens will determine the durability, clarity of vision and price of your lenses, so you should consider the factors that are most important for you and try out a few options to see how they feel. 

Sunwear Frames

Frame Size

The size of your sunglass frame is important for both comfort and protection. Your frames should fit according to your face size and provide ample coverage for your eyes. When you try on your frames, make sure they cover your eyes and feel comfortable around the bridge and temples. Also check that they don’t slip off when you move your head down toward the floor. 

Frame Materials

Frames can be manufactured from a number of materials and, these days, frame companies are constantly innovating to come up with new and improved options. These materials vary in strength, flexibility, weight, comfort and price. You need to choose a frame material that is comfortable, safe, and functional and that suits your lifestyle and your fashion style. 

Making the Purchase

When purchasing sunglasses, keep in mind that your vision insurance may help to cover the costs when purchased at an optometry office rather than at a sports or recreation store. Check with your insurance and your local optical to find out about any discounts or coverage. Another advantage of purchasing from an optometrist’s optical is that the optician can help you to find the perfect pair to suit your eye and vision needs, as well as your lifestyle and fashion preferences. 

The good news about choosing the right pair of sunglasses is that there are ample brands, colors, styles and materials to choose from. So when it comes to your shades, don’t settle for less than optimal protection, fit and comfort for your eyes. 

It’s that time of year again!

This year we are offering 40% off of a complete pair of Kate Spade or Banana Republic glasses and 30% off a complete pair of glasses of any other brand.

We are also having a drawing to win a free pair of prescription sunglasses!

Stop by on Wednesday, May 23rd, 2018 between 2-5pm to take advantage of these great deals!

Full scoop at duvalleye.com/2018sale

What’s it like to be color blind? Contrary to what the name implies, color blindness usually does not actually mean that you don’t see any color, but rather that you have difficulty perceiving or distinguishing between certain colors. This is why many prefer the term color vision deficiency or CVD to describe the condition. CVD affects men more than women, appearing in approximately 8% of men (1 in 12) and .5% of women (1 in 200) worldwide.

Having color vision deficiency means that you perceive color in a more limited way than those with normal color vision. This ranges from mild, in which you may not even be aware that you are experiencing color differently, to severe, which is perhaps the more appropriate from to be called “color blind” and involves the inability to see certain colors.

CVD can be inherited; it is caused by abnormalities in the genes that produce photopigments located in the cone cells in your eyes. The eyes contain different cone cells that fire in response to a specific color, blue, green or red and together allow you to see the depth and range of colors that the normal eye can see. The type of color blindness and therefore the type of color vision that is impaired, is based on which photopigments are abnormal. The most common form of CVD is red-green, followed by blue-yellow. Total color blindness or the complete inability to perceive color is quite rare. About 7% of males have congenital color blindness that they inherit from the mother’s X-chromosome.

Color blindness can also be the result of eye damage, specifically to the optic nerve, or to the area in the brain that processes color. Sometimes an eye disease, such as cataracts, can also impact one’s ability to perceive color. Systemic diseases such as diabetes or multiple sclerosis can also cause acquired CVD.

Living with CVD

Red-green color blindness does not mean only that you can’t tell the difference between red and green, but rather that any color that has some red or green (such as purple, orange, brown, pink, some shades of gray, etc) in it is affected.

You many not realize all of the ways you use even subtle distinctions in color in your daily life. Here are some examples of ways that CVD can impact your life and make seemingly everyday tasks challenging:

• You may not be able to cook meat to the desired temperature based on color.
• Most of the colors in a box of crayons will be indistinguishable.
• You may not be able to distinguish between red and green LED displays on electronic devices that indicate power on and off.
• You may not be able to tell between a ripe and unripe fruit or vegetable such as bananas (green vs. yellow) or tomatoes (red vs green).
• Chocolate sauce, barbecue sauce and ketchup may all look the same.
• Bright green vegetables can look unappealing as they appear greenish, brown or grey.
• You may not be able to distinguish color coded pie charts or graphs (which can cause difficulty in school or work).
• Selecting an outfit that matches can be difficult.

Knowing that one is color blind is important for some occupations that require good color discrimination such as the police officers, railway workers, pilots, electricians etc. These are just a few of the ways that CVD can impact one’s daily life. So is there a cure? Not yet.

While there is no cure for CVD, there is research being done into gene therapies and in the meantime there are corrective devices available including color vision glasses (such as the Enchroma brand) and color filtering contacts that for some can help to enhance color for some people. If you think you might have CVD, your optometrist can perform some tests to diagnose it or rule it out. If you have CVD, you can speak to your eye doctor about options that might be able to help you experience your world in full color.

In honor of Sjogren’s Awareness month, eye care providers are helping to spread the word to increase awareness about this hard-to-diagnose disease.

Sjogren’s is a systemic autoimmune disorder that can affect the whole body. One of the primary symptoms is excessive dryness particularly in the eyes and mouth. Other serious symptoms include chronic fatigue and pain, specifically in the joints, as well as major organ dysfunction. The syndrome also increases chances of neuropathies and lymphomas. 

The severity of the disease varies greatly, ranging from mild discomfort to debilitating symptoms that can seriously impair normal functioning in everyday life. Early diagnosis and treatment can prevent serious complications and improve quality of life. There is currently no cure for Sjogren’s, yet there are treatments for many of the individual symptoms. On average patients are prescribed upwards of 8 medications to treat the wide range of symptoms. 

Women are nine times more likely to develop Sjogren’s than men and diagnosis usually occurs around the age of 40. Unfortunately, because the symptoms vary from person to person, and the disease often occurs in the presence of or mimics other diseases (such as lupus, rheumatoid arthritis, menopause, allergies or multiple sclerosis) the disease is often misdiagnosed or overlooked. Further, because the symptoms can affect different parts of the body system such as the teeth, eyes or musculoskeletal system, various health professionals are sought to diagnose or treat specific symptoms (such as rheumatologists, dentists or eye doctors) while the big picture is often missed. On average it takes almost three years to obtain a Sjogren’s diagnosis once symptoms are noticed.  

Since dry eye is one of the most common early symptoms of the disease, there has been an effort to educate eye care providers to recognize and to be aware to look for symptoms of the disease. Patients also need to be aware and proactive about speaking to their health care providers about potential diagnosis and treatment. Knowing the risk factors and symptoms can be imperative to a faster diagnosis. 

Your eye doctor may be able to detect and diagnose Sjogren’s syndrome from dry eye symptoms as well as other diagnostic tests and review of symptoms. With this diagnosis the treatment will be different from typical dry eye disease. Since it is an autoimmune disease, lubricating eye drops may provide temporary relief but will not address the source of the problem. Your doctor may prescribe newer cyclosporine drops as well to treat the inflammatory response. If you have dry eyes and typical treatments aren’t working, it may be worthwhile to ask about Sjogren’s. 

Sjogren’s patients often feel misunderstood because most of the debilitating symptoms are not visible to others and the disease is often not recognized largely due to a lack of awareness. By increasing both public and professional awareness, the goal is to reduce diagnosis time and to advance research on the cure for this disorder.

There is nothing worse than a dirty spot on your glasses – well except perhaps many dirty spots or smudges. When that happens, most of us are tempted to grab the corner of our shirt and wipe it off, but resist the temptation – this is actually not a good idea.

There is a right way and a wrong way to clean your glasses. Cleaning your glasses properly will not only remove irritating dirt and smudges, but will also prevent your lenses from getting scratched allowing you to see your best.

You want to make sure that the materials you use to clean your lenses are clean and soft. The reason your shirt corner is not the best option is because it likely contains dust or particles that can scratch your lens. However, you don’t need fancy, lens cleaners either. In truth the best cleaner for your glasses may be more simple than you expect –

Gentle Dish Soap

That’s right, a gentle dish soap, warm water and a clean, dry soft cotton towel are the best tools you can have for cleaning your lenses.

Simply rinse your glasses in warm water and apply a small drop of soap (make sure to use a brand of soap that is lotion and moisturizer free). Rub the soap into the lens with your fingers and rinse thoroughly until all of the soap has been removed. Gently shake the glasses to remove excess water and then dry with a clean, dry, lint-free towel.

You may be wondering about the microfiber lens cloths and spray cleaner you get from your optician. These lens cleaning packs are great for when you are on the go and don’t have access to a sink and dish soap. The microfiber cloths are also great for polishing dry lenses after any dust or particles are blown away- just make sure they are cleaned regularly. For a real, thorough clean however, we advise that you use the technique above.

Cleaning Don’ts

Don’t use vinegar, glass or window cleaner, bleach, ammonia or spit/saliva for cleaning your lenses. The chemicals could strip off the coatings on your lenses, and saliva – well, it just doesn’t work. In particular, many lenses these days have anti-glare treatments that are especially prone to damage if not cleaned properly and are particularly vulnerable to window cleaners and alcohol.

Remember once your glasses are scratched, there is little to do to repair them. If you see something on your lens try to blow or brush it away carefully before you use a cloth to clean your lenses.

Keeping Your Lenses Clean

To avoid dirt and smudges, always take your glasses off with two hands using the arms of the frame and avoid touching the lenses. Further, the best way to preserve your glasses and keep them clean is to keep them in a case when they are not in use. It’s worthwhile to get an extra case or two to have on hand in the car or in your purse for times that you need to take your glasses off. If you notice swirled or circular scratches on your lenses, those are almost always from improper cleaning so make sure to take the time to clean them properly the next time.

Workplace Eye Safety Month

Blue light. Do you know what it is? Do you know where it comes from, or how it can be harmful to your eyes? If you don’t know the answers to these questions, you are not alone, yet it is important that you become aware to protect your eyes for now and the years to come.

The reason blue light is suddenly becoming a big issue is because other than the sun, which is the biggest source of blue light, a significant source of blue light emission comes from digital devices and artificial lighting. As our world becomes increasingly digital – think: HD televisions, LED lights, computers, smartphones, tablets – we are all exposing our eyes to more and more amounts of blue light than ever before. And we are only beginning to understand the long term effects this has on our bodies and our eyes.

One of the biggest issues with blue light is that whether it is through work or leisure, people are exposed to screens at a close range for a large portion of the day. A survey from the Vision Council entitled, “Blue Light Exposure and Digital Eye Strain” recently showed that 87% of respondents used digital devices for more than two hours a day and over 52% regularly used two digital devices as the same time. This shift has drastically increased exposure and the number of symptoms that are reported. To date, research has shown that there are a number of ways blue light can impact your eyes including digital eye strain, sleep disturbances and retina damage that can lead to long term problems including serious eye diseases.

Digital eye strain is a condition that is characterized by dry, sore, tired or burning eyes, eye fatigue and sensitivity to light. It can also cause blurred or double vision, headaches, back, neck and shoulder aches and difficulty focusing or concentrating. These symptoms are most common in individuals that sit in front of the computer for two or more hours a day.

Studies show that exposure to blue light right before bedtime can cause disruptions in sleep and wakefulness because it causes a shift in the levels of melatonin, a hormone which affects your circadian rhythm and therefore your sleep patterns. So if you are using your smartphone to wind down in bed, put it down and dust off an old hardcover book!

Retina damage has been found to be a possible result of long term blue light exposure causing damage to the retinal cells in the eye which are responsible for clear vision. There has been evidence that this type of damage can lead to age-related macular degeneration (AMD) and cataracts later in life. In certain cases, your doctor might recommend Lutein and Zeaxanthin nutritional supplements to protect the macula from blue light damage.

Despite these risks, few people are taking action to protect their eyes from blue light. A recent study from Transitions Optical, The 2017 Employee Perceptions of Vision Benefits Survey, showed that there is also a significant generational difference in knowledge, habits, and attitude regarding blue light with millennials being more aware and concerned about the health effects it has on their eyes. Millennials are more likely to request prescription eyewear that has blue light protection and to know whether their current pair has that extra coverage. However, even the millennial generation is significantly lacking in awareness and prevention.

The best way to gain awareness of and protection against blue light is to speak to your eye doctor. There are a number of ways you can protect your eyes which include computer glasses, blue light lens filters, or even blue light filter screen protectors or apps that reverse screen colors for those that don’t use prescription eyewear. Each individual can find the best solution based on lifestyle, work environment and personal comfort. The most important takeaway is that you understand that blue light is an issue, take responsibility for your eye health and speak to your eye doctor about the best blue light solutions for you and your family.

Nerf guns or blasters come in a remarkable number of shapes and sizes and have become incredibly popular for use in the home and even in large scale “Nerf Wars”.  However publicity surrounding the toy has not been all positive.  Many parents out there are questioning the safety of the toy foam guns, particularly to the eyes, before making the purchase.

The question of safety ultimately comes down to the user.  Nerf darts are relatively soft, foamy and not inherently dangerous, but if shot in the wrong way, they could cause pain or even serious injury. This is particularly true of the eyes because they are a vulnerable organ that can be damaged easily upon impact. Injuries from even a soft projectile could include corneal abrasions (surface scratches), bleeding, cataracts and even retinal detachment which can lead to permanent vision loss. 

Nevertheless, Nerf guns are fun and can even be used to help motor development and other skills, so with the right guidelines, children can learn to use them safely and benefit from the enjoyment they provide. 

Want surefire eye safety? Wear safety glasses!

The best defense for your eyes is safety glasses.  This is the one way you can be sure that you or your child’s eyes are truly safe during Nerf shooting.  We strongly recommend safety glasses be worn during any play that involves projectile objects, particularly for small children or during serious games such as Nerf Wars.

General rules of Nerf Gun play:

1. Never shoot at the face.
2. Never look into the barrel of the nerf gun, even if you think it isn’t loaded. 
3. Avoid walking around with your finger on the trigger until you are ready to point and aim at the proper target. 
4. Only shoot others that are “playing” and are aware that you are aiming at them.
5. Don’t shoot from a moving vehicle (including a bicycle, skateboard, rollerblades, etc.).
6. Don’t shoot at a moving vehicle.
7. Never shoot at a close range.   
8. Never leave loaded gun in reach of a child or individual that is not able to use the toy properly and safely. 

To be safe, all toy guns that shoot projectiles should be treated as a dangerous toy in order to ensure proper usage and precautions. Yes, Nerf guns can cause serious eye damage and even vision loss, but these type of injuries can be caused by many “harmless” objects as well. Before you purchase a toy like this for your child, ask yourself whether the child is old enough and mature enough to understand the safety issues involved and to be able to use it responsibly.  

Why Are My Eyes So Dry?

Do you experience dry, scratchy, burning eyes, redness or pain, a gritty feeling like something is in your eye? Or perhaps, excessive tearing, blurred vision, eye fatigue or discomfort wearing contact lenses? There could be a number of causes for your symptoms including allergies, reactions to an irritant or medication or an infection. You could also have a chronic condition called Dry Eye Syndrome.

It’s estimated that one out of every eight adults suffers to some extent from dry eye syndrome, which can range from mild to severe. Despite the fact that it is one of the most common eye problems, a surprisingly large percentage of patients are not aware of it.

What is Dry Eye Syndrome?

Your eyes need a layer of tears to lubricate the surface and keep the eyes comfortable, clean and clear. These tears also wash away particles, dust and bacteria that can lead to infection and eye damage. Dry eye syndrome occurs when there is a chronic lack of lubrication on the surface of the eye either because not enough tears are being produced, the quality of the tears is weak or they evaporate too quickly. This causes the common uncomfortable symptoms including:

• Itching
• Burning
• Redness
• Soreness or pain
• Dryness (and sometimes even excessive tearing because the eyes are trying to compensate)
• Light sensitivity
• Eye fatigue
• Blurred vision
• Grittiness or a feeling like there is something in your eye
• Vision seems to change when blinking

Factors that Contribute to Dry Eye Syndrome

There are a number of factors that can increase your risk of suffering from Dry Eye Syndrome. While some of them are inherent, there are some environmental factors that can be changed to reduce your risk or symptoms. Risk factors include:

• Aging: While it can occur at any age, dry eye is more common in individuals over age 50. 
• Women: Likely related to hormonal fluctuations, women are more likely to develop dry eyes than men, especially during pregnancy, menopause or when using birth control pills. 
• Digital screen use: Whether it is a computer, a smartphone or a tablet, when our eyes are focused on a digital screen we tend to blink less, increasing tear evaporation and increasing dryness, blurriness and discomfort. Remember to regularly take a break, look away from the screen and blink several times.
• Medications: A number of medications – both prescription and nonprescription – have been found to cause dry eye symptoms including certain blood pressure regulators, antihistamines, nasal decongestants, tranquilizers and antidepressants. 
• Contact lenses: Dry eyes is a common problem in contact lens wear. Several manufacturers have started offering lenses that hold more moisture to combat this common issue. 
• Dry air: Whether it is the air conditioning or forced-air heating inside or the dry, windy climate outside, the environment of the air around you can contribute to dry eyes by causing your tears to evaporate too quickly. 
• LASIK: One side effect of LASIK and other corneal refractive surgery is dry eyes, which usually lasts about 3-6 months and eventually resolves itself. 
• Eyelid conditions: Certain conditions which prevent the eyelid from closing completely when sleeping or even blinking can cause the eye to try out.
• Allergies or infections: Chronic inflammation of the conjunctiva which is often caused by allergies or infections such as Blepharitis can result in dry eyes. 
• Systemic diseases: People with autoimmune diseases or systemic conditions such as diabetes, thyroid disease, Sjogren’s syndrome, rheumatoid arthritis and lupus are also more prone to Dry Eye. 

How do you treat dry eye symptoms?

If you have dry eyes, you don’t need to suffer. There are a number of treatment options that can help, depending on the severity and cause of your condition, which can reduce symptoms and enhance your comfort.

Treatments for dry eyes can include non-prescription or prescription eye drops, omega 3 supplements, special lid therapies, punctal plugs, ointments, different contact lenses, goggles or ergonomic changes to your work station. Speak to your eye doctor to discuss the cause of your dry eye and the best remedy for you. Even when it comes to the seemingly straightforward treatments like over-the-counter eye drops, they aren’t all the same. Different ingredients are tailored towards different causes of dry eye.

Get Help for Dry Eyes Today!

If you are experiencing the symptoms above, schedule an appointment with your eye doctor to find out the best solution for you.