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3 Benefits of Anti-Glare Coating

Glare refers to the excessive brightness caused by direct or reflected light. It can cause eye strain, digital eye strain (when using a computer, for example), halos, and headaches. Glare can also reduce visibility, making it unsafe to drive.

Anti-glare coating, also known as anti-reflective (AR) coating, is a thin layer applied to the surface of your eyeglass lenses that allows more light to pass through your lenses. By reducing the amount of glare that reflects off of your lenses, you can see more clearly and experience more comfortable vision. You can request anti-glare coating for lenses when you buy eyeglasses.

AR Coating Offers 3 Major Advantages

Better Appearance

Without an anti-glare coating on your glasses, camera flashes and bright lights can reflect off your lenses. This can hinder your appearance when speaking to people or in meetings, cause flash reflections when picture-taking, and make it difficult to find the right angle for video calls. Anti-reflective coating eliminates the harsh reflections and allows others to clearly see your eyes and face.

Reduced Digital Eye Strain

You know that tired, irritated feeling you get after staring at a digital screen for several hours? That’s digital eye strain. Anti-glare coating helps reduce digital eye strain by lowering exposure to excessive glare from digital devices and lighting.

Safe Driving at Night

The bright headlights from cars driving in the opposite direction can pose a serious danger when driving at night. These sudden glares can lead you to momentarily lose focus of the view ahead. AR coating on your prescription eyewear effectively reduces reflections from headlights at night, allowing you to enjoy a better view of the road and safer driving at night.

Let your eyes look and feel better every day with anti-glare coated lenses. Contact us to book your appointment today!

Frequently Asked Questions with Silicon Valley Eye Physicians

Q: Can you request lenses made from glass? Is glass still used for lenses?

  • A: Opticians still sometimes use glass for lenses. However, glass is not used very often because they aren’t as safe. If these glass lenses breaks, they can shatters into many pieces and can injure the eye. Glass lenses are much heavier than plastic lenses, so they can make your eyeglasses less comfortable to wear.

Q: Can a coating be added to eyeglasses to protect them from further scratches?

  • A: A protective coating can’t be added to a lens after it’s scratched. The coating is applied when the lens is manufactured and can’t be put on later.

Quality Frames For Prescription Eyeglasses & Computer Glasses In Sunnyvale, California. Visit Silicon Valley Eye Physicians for an eye exam and eyeglasses that match your style.

What You Should Know About Night Blindness

If you don’t see well while driving at night, there’s a chance you have night blindness. Night blindness, or nyctalopia, is the inability to see well at night or in dim lighting. It’s not considered an eye disease, but rather a symptom of an underlying problem.

Our eye doctor can help diagnose, manage and treat your night blindness so that you can enjoy being out at night again.

Here are 4 things you should know about night blindness:

Causes of Night Blindness

The inability to see well at night can be the result of a condition such as:

Vitamin A Deficiency — Vitamin A helps keep your cornea, the layer at the front of your eye, clear; it’s also an important component of rhodopsin, a protein that enables you to see in low light conditions. Although uncommon in North America, deficiency of this vitamin can induce night blindness.

CataractsA buildup of protein clouds the eye’s lens, leading to impaired vision, especially at night and in poor lighting conditions.

Diabetic RetinopathyDamage to the eyes’ blood vessels and nerves can result in vision loss, including difficulty seeing at night.

GlaucomaThis group of eye diseases is associated with pressure build-up in the eye that damages the optic nerve. Both glaucoma and the medications used to treat it can cause night blindness.

MyopiaAlso called nearsightedness, myopia makes distant objects appear blurry, and patients with it describe a starburst effect around lights at night.

KeratoconusAn irregularly shaped cornea causes blurred vision and may involve sensitivity to light and glare which tend to be worse at night.

Retinitis Pigmentosa (RP)A progressive genetic eye disease which can be associated with other diseases, RP leads to night blindness and peripheral vision loss.

Usher SyndromeThis genetic condition causes both hearing loss and vision loss, including night blindness and RP, mentioned above.

Symptoms of Nyctalopia

Since night blindness is a symptom of some serious vision problems, it’s important to get your eyes checked regularly to ensure that everything is in good working order. Contact your eye doctor as soon as possible if you notice that you don’t see as well in dim light as you used to, such as when driving at night or when adjusting from being outdoors in the sunshine to being indoors.

Symptoms of Night Blindness Include:

  • Reduced contrast sensitivity
  • Difficulty seeing people outdoors at night
  • Difficulty seeing in places with dim lighting, like a movie theater
  • Trouble adapting to the dark while driving
  • Excessive squinting at night
  • Trouble adjusting from bright areas to darker ones

Treatments for Night Blindness

Your eye doctor will want to diagnose the cause of your night blindness in order to treat it. For example, in the rare case of vitamin A deficiency, it can be treated with vitamin supplements and vitamin-A rich foods; myopia can be corrected with eyeglasses or contact lenses. Other conditions may require medications or surgery.

If night blindness is caused by a birth defect, Usher syndrome, or retinitis pigmentosa, low vision aids and devices can help you make the most of your remaining vision.

Prevention

While there is no proven way to prevent night blindness resulting from genetic conditions or birth defects, consuming healthy, nourishing foods and taking certain vitamin supplements may prevent or slow the onset of some eye conditions that cause night blindness.

If you experience poor vision at night or in dim lighting, we can help. Contact Silicon Valley Eye Physicians in Sunnyvale to schedule your appointment today.

Frequently Asked Questions with Silicon Valley Eye Physicians

Q: Can you request lenses made from glass? Is glass still used for lenses?

  • A: Opticians still sometimes use glass for lenses. However, glass is not used very often because they aren’t as safe. If these glass lenses breaks, they can shatters into many pieces and can injure the eye. Glass lenses are much heavier than plastic lenses, so they can make your eyeglasses less comfortable to wear.

Q: Can a coating be added to eyeglasses to protect them from further scratches?

  • A: A protective coating can’t be added to a lens after it’s scratched. The coating is applied when the lens is manufactured and can’t be put on later.

Quality Frames For Prescription Eyeglasses & Computer Glasses In Sunnyvale, California. Visit Silicon Valley Eye Physicians for an eye exam and eyeglasses that match your style.

How Can My Child’s Myopia Be Corrected?

At Silicon Valley Eye Physicians, we help children like yours achieve clear and comfortable vision, so they can succeed at the important things in life.

Methods of Myopia Correction

Contact Lenses

Contacts can be a great choice, especially for physically active children or teens who don’t want to worry about breaking or misplacing their eyeglasses. In some cases of very high myopia, contact lenses can offer clearer vision than glasses.

Corrective contact lenses are usually placed in the eyes upon waking and removed at night before bedtime. There are several types, including: soft contacts, daily disposables, extended wear, and rigid gas permeable (hard) lenses. Navigating through the differences between them can be daunting. Fortunately, if you’re located in Sunnyvale our eye doctor will be happy to guide you. Speak with Dr. David Mark to determine whether your child is ready for contact lenses.

Prescription Glasses

Glasses are a popular choice among our younger patients. Choosing from an array of styles makes the process fun and exciting! Allowing the children to be active participants in selecting their eyewear increases the likelihood that they’ll actually wear them. There are strong, flexible and resilient frames which look great and are comfortable too.

The optician can customize the lenses with additions and upgrades like impact-resistant or shatter-proof materials, scratch-resistant and anti-reflective coatings, UV filters, and transition lenses that darken in the sun. For those requiring vision correction for distance and near, we also offer bifocal or multifocal lens prescriptions.

We Can Help Correct Your Child’s Myopia

If you’re located near Sunnyvale, California, an eye exam with our optometrist can determine your child’s exact prescription, and give you the opportunity to receive answers to any questions you may have about your child’s eye health and vision. Progressive myopia, where a growing child’s prescription continues to worsen, is why it’s important for myopic children to undergo eye exams at least once a year.

At Silicon Valley Eye Physicians, our friendly and knowledgeable staff will be happy to recommend the most suitable method of correcting your child’s myopia to meet his or her individual needs. Thanks to the wide range options available, your child will walk away with eyewear that will not only enhance his or her style but will also be a boost of confidence.

Let us help your child see the world in a whole new light. To schedule your child’s annual eye exam or if you have any further questions, contact Silicon Valley Eye Physicians at 408-739-6200 today.

Are Floaters and Flashes Dangerous?

You’ve likely experienced occasional visual “floaters” or flashes and may have wondered what they were and if they’re a cause for concern. They look like tiny lines, shapes, shadows, or specks that appear to be drifting in the visual field. More often than not, seeing floaters is a normal occurrence and does not indicate a problem with ocular or visual health. However, when floaters become more frequent and are accompanied by flashes of light, that can indicate a more serious problem.

Eye flashes resemble star-like specks or strands of light that either flash or flicker in one’s field of vision. They can either be a single burst in one visual zone, or can be several flashes throughout a wider area. Flashes can sometimes be missed as they most often appear in the side or peripheral vision.

Floaters & Flashes Eye Care in Sunnyvale, California

If you suddenly, or with increasing frequency, experience flashes or floaters, call Silicon Valley Eye Physicians and schedule an eye exam with Dr. David Mark right away to rule out any serious eye conditions.

What Causes Floaters?

The vitreous in the eye is a clear gel that fills most of the eyeball and resembles raw egg-white. Within the vitreous are small lumps of protein that drift around and move with the motion of your eyes. When these tiny lumps of protein cast shadows on the retina — the light-sensitive lining at the back of the eye — the shadows appear as floaters.

As we age, the vitreous shrinks, creating more strands of protein. This is why the appearance of floaters may increase with time. Floaters tend to be more prevalent in nearsighted people and diabetics, and occur more frequently following cataract surgery or an eye injury.

If seeing floaters becomes bothersome, try moving your eyes up and down or side to side to gently relocate the floaters away from your visual field.

What Causes Flashes?

Flashes result from the retinal nerve cells being moved or tugged on. As the vitreous shrinks over time, it can tug at the retina, causing you to “see stars” or bursts of light. The process of the vitreous separating from the retina is called “posterior vitreous detachment” (PVD) and usually isn’t dangerous.

In about 16% of cases, PVD causes tiny tears in the retina that can lead to retinal detachment — a sight-threatening condition that causes irreversible blindness if left untreated.

Other possible causes of flashes are eye trauma or migraine headaches.

When To Call Your Optometrist About Floaters

If you experience any of the following symptoms, promptly make an appointment with an eye doctor near you for emergency eye care.

Symptoms You Shouldn’t Ignore

  • A sudden onset of floaters accompanied by flashes (which can be any shape or size)
  • An increase of floaters accompanied by a darkening of one side of the visual field
  • Shadows in the peripheral vision
  • Any time flashes are seen

In many cases, seeing floaters is no cause for concern; however the above symptoms could indicate retinal detachment—which, if left untreated, could cause a permanent loss of sight or even blindness.

If the receptionists pick up the phone and hear the main concern is floaters or flashes, they will try to squeeze in the appointment within 24 hours. Expect the pupils to be dilated during your eye exam, so the eye doctor can get a really good look at the peripheral retina to diagnose or rule out a retinal tear or other serious condition, as opposed to a non-vision-threatening condition such as uncomplicated posterior vitreous detachment (quite common) or ocular migraine.

Please contact Silicon Valley Eye Physicians in Sunnyvale at 408-739-6200 with any further questions, or to schedule an eye doctor’s appointment.

Tips to Relax Your Eyes

Do your eyes hurt after spending a significant amount of time reading, playing video games, driving, or staring at a screen? These visually intense activities can sometimes be hard on the eyes, causing uncomfortable symptoms like headaches and blurry vision. Other symptoms of eye strain can include light sensitivity, neck and shoulder pain, trouble concentrating, and burning or itchy eyes.

Fortunately, preventing painful computer vision syndrome and eye fatigue symptoms can be as simple as trying a few of these eye exercises. To learn more about digital eye strain and discover the best relief options for you, call Silicon Valley Eye Physicians at 408-739-6200 and schedule an eye exam with Dr. David Mark.

Relax Your Eyes with These Supportive Techniques

Many of these exercises are designed for computer users. Eye strain resulting from long drives, reading, or other activities, can be alleviated by modifying some of these recommendations.

The Clock Exercise

The clock exercise relieves strain on overworked eye muscles and can help you avoid headaches and eye pain, among other symptoms. Begin the exercise by imagining a large analog clock a few feet in front of you. Keep your head still and move your eyes to the imaginary 9, then to the imaginary 3.

Keep moving your eyes to the opposite pairs on the clock — 10/4, 11/5, 12/6, and so on. Hold your gaze for a second or two on each number before moving on to the next one. Continue doing this for 4-5 minutes.

The 20-20-20 Rule

The 20-20-20 rule helps you avoid dry eyes and eye strain by giving your eyes frequent breaks. After about 20 minutes of screen time or doing close-up work, focus on an object at least 20 feet away for 20 seconds. This gives the eyes a much needed rest and helps them relax. There are also free apps available that provide pop-up reminders that notify you when it’s time to shift your gaze.

Screen Ergonomics

The American Optometric Association recommends placing computer monitors 20 to 28 inches, or 50-70 cm, away from your eyes and the top of the computer should be at eye level or right below for optimum eye comfort. Glare filters can reduce the amount of glare produced by digital devices and improve your viewing experience.

Poor sitting posture can also contribute to eye strain. Your chair should be situated so that your feet are flat on the floor, or use an angled footrest for additional comfort.

Optimize your Eyewear

Since regular prescription lenses or glasses may not adequately meet your visual needs for lengthy computer use, you may benefit from wearing computer glasses. These prescription glasses are customized to your needs and also reduce glare and block blue light.

 

You don’t have to live with the discomforts of eye strain. If symptoms persist, it may be time to visit Silicon Valley Eye Physicians and get the relief you seek. Call our office to schedule a convenient eye doctor’s appointment.

 

How Long Does It Take to Get Used to New Glasses?

Most people who wear glasses are familiar with the excitement and confidence boost that accompanies wearing new specs for the first time. But sometimes there is an adjustment period before your vision is fully comfortable. Things may look blurry, or you may notice feeling dizzy after prolonged wear. Some of these symptoms can be a normal part of the adjustment period, but sometimes they’re a reason to contact your eye doctor. If your new glasses are giving you trouble, speak with Dr. David Mark about ensuring that your eyesight is both clear and comfortable.

When Will My Eyes Adjust to My New Glasses?

It can take a few days to a few weeks for your eyes and brain to fully adjust to your new eyewear, whether you are increasing your prescription or wearing eyeglasses for the first time.

Even if you are getting new glasses with the same prescription, different frames or lenses can alter your vision until you get used to the new frame style or lens type. The complexity of your prescription and whether you buy a lens with premium optics versus basic spherical lens or polycarbonate material all can affect the adjustment time.

Progressive lenses tend to be the most difficult to adjust to. This is related to the peripheral soft focus zones, which are much less blurred for customized lenses prescribed by your local optometrist.

What Are Some Possible Visual Symptoms I Could Experience?

Some common experiences shared by those adjusting to new eyewear include:

  • Eye strain, headache
  • Blurry vision
  • Trouble with depth perception, nausea and dizziness
  • “Barrel distortion” — objects appear distorted, for high plus lenses
  • “Fishbowl effect” — the feeling that your visual field is being bent along the edges, as if you’re looking through a fishbowl, common in high minus prescriptions

Why Do My New Glasses Give Me a Headache?

Fatigued eye muscles can cause headaches. But your eyes aren’t the only things adjusting to your new lenses. Your brain is also working hard to create a clear picture of the messages it’s receiving from your eyes. This extra brain activity can sometimes bring on a headache, which should only last about a day or so.

Why Do I Feel Dizzy With My New Glasses?

Dizziness and nausea can be caused by problems with depth perception, similar to motion sickness. With motion sickness, you feel uneasy because your brain is having difficulty understanding the position of your body in relation to the space surrounding it. So when you wear your new glasses, your brain may need some time to understand how to interpret the new images it’s receiving, causing you to feel disoriented or dizzy.

When Should I Call My Eye Doctor?

When the adjustment period extends beyond a few weeks, there is a possibility that there was an error in the manufacturing of the lenses. Many people purchase eyewear from somewhere other than their eye doctor or order glasses online, and some studies have shown that up to 40% of online eyewear is made incorrectly or inaccurately.

It’s important to note that many offices may charge fees to check eyewear that is not made by them and that there may be fees for rechecking a patient’s refraction when glasses are made by another source.

Discomfort that lasts longer than a couple of weeks means it’s time to call your optometrist. Persistent symptoms like headaches, dizziness, or blurry vision can indicate that your glasses aren’t well suited to your eyes and need adjusting. Your optometrist will double check the prescription of the glasses among other things to ensure that the new glasses are right for you.

If you need new glasses or are having a hard time adjusting to a new pair, don’t hesitate to contact Silicon Valley Eye Physicians to schedule an appointment with the Sunnyvale eye doctor.

COVID-19 Office Updates

The health, safety, and well-being of our patients, their families, and our staff is, as always, of paramount priority to us. While we have always strived to maintain a safe and clean environment, we have been taking extra measures due to the recent COVID-19 outbreak.

Some of these efforts include the following:

  • Restricting access to our clinic by appointment only.

  • We are also changing our schedules to reduce the total number of people in the building at one time.

  • We request patients come alone for clinic visits unless they are a minor or need assistance from another adult.

  • Requiring patients/guests of the clinic to reschedule appointments if they have any cold/flu symptoms or have visited an infected area (domestically or internationally) in the last two weeks.

  • Requiring patients and caretakers to wear a mask or face covering for their entire visit.

  • Using touchless check-in, forms, and payment systems.

  • Our patients are asked to wait in the comfort of their cars and alert the office when they have arrived. this limits the number of people in the building at one time and reduces the chances of exposure.

  • Sanitizing eyeglass frames, external door handles, counter-tops, clipboards, etc. after every patient.

  • Exam room chairs and equipment will be sanitized between patient encounters, as always.

  • Our physicians and staff will continue to clean their hands between each and every patient encounter.

  • As our physicians and some of our staff are exposed to greater numbers of patients, we may begin to don personal protective equipment (PPE) including masks and eyewear.

  • Hand sanitizer will be made available at the front desk for patient/guest use (pending continued supply from our vendors); soap and water are always available in the bathrooms and sinks throughout the clinic.

 

To summarize, we are dedicated to sustaining the safest environment possible for our patients and are committed to adjusting our action plan to the fluid COVID-19 situation per the evolving CDC recommendations and the authorities. We will continue to work diligently to protect all guests in our office and staff members. We welcome your feedback if we can further improve your visit to our clinic.

Is Too Much Screen Time Dangerous For Your Kids?

Screen Time Pros and Cons

Whether it is homework, email, gaming, chatting with friends, searching the web or watching Youtube, kids these days seem to have an endless number of reasons to be glued to a screen. Many parents out there are wondering how bad this can be for their kids and whether they should be limiting screen time.

There are certainly benefits to allowing your kids to use digital devices, whether it is educational, social or providing a needed break. However, studies show that excessive screen time can have behavioral consequences such as irritability, moodiness, inability to concentrate, poor behavior, and other issues as well. Too much screen time is also linked to dry eyes and meibomian gland disorders (likely due to a decreased blink rate when using devices), as well as eye strain and irritation, headaches, back or neck and shoulder pain, and sleep disturbances. Some of these computer vision syndrome symptoms are attributed to blue light that is emitted from the screens of digital devices.

Blue light is a short wavelength, high-energy visible light that is emitted by digital screens, LED lights and the sun. Studies suggest that exposure to some waves of blue light over extended periods of time may be harmful to the light-sensitive cells of the retina at the back of the eye. When these cells are damaged, vision loss can occur. Research indicates that extreme blue light exposure could lead to macular degeneration or other serious eye diseases that can cause vision loss and blindness. Studies show that blue light also interferes with the regulation of the body’s circadian rhythm which can have a disruptive impact on the body’s sleep cycle. Lack of quality sleep can lead to serious health consequences as well.

Beyond these studies, the long term effects of blue light exposure from digital devices are not yet known since this is really the first generation in which people are using digital devices to such an extent. While it may take years to fully understand the impact of excessive screen time on our eyes and overall health, it is probably worth limiting it due to these preliminary findings and the risks it may pose. This is especially true for young children and the elderly, who are particularly susceptible to blue light exposure.

How to Protect the Eyes From Blue Light

The first step in proper eye protection is abstaining from excessive exposure by limiting the amount of time spent using a computer, smart phone or tablet – especially at night, to avoid interfering with sleep. Many pediatricians even recommend zero screen time for children under two.

The next step would be to reduce the amount of blue light entering the eyes by using blue light blocking glasses or coatings that deflect the light away from the eyes. There are also apps and screen filters that you can add to your devices to reduce the amount of blue light being projected from the screen. Speak to your eye doctor about steps you can take to reduce blue light exposure from digital devices.

As a side note, the sun is an even greater source of blue light so it is essential to protect your child’s eyes with UV and blue light blocking sunglasses any time your child goes outside – even on overcast days.

The eyes of children under 18 are particularly susceptible to damage from environmental exposure as they have transparent crystalline lenses that are more susceptible to both UV and blue light rays. While the effects (such as increased risk of age-related macular degeneration) may not be seen for decades later, it’s worth it to do what you can now to prevent future damage and risk for vision loss.