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Why David Bowie Has Two Different Colored Eyes

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Author: steve

Why David Bowie Has Two Different Colored Eyes

david-bowieHave you ever noticed that the musician David Bowie has two different colored eyes? Today, many people love to use colored contacts to change their overall appearance, but it is unusual to see a person with two different colored eyes. Although animals, like cats, seem to have this characteristic more than humans, the reasons behind eye color difference is not always genetic. To get a better idea how this unique visual feature comes about, take a look at these pieces of ophthalmological trivia.

How genes are expressed in two different ways

Most people have a unique eye color that is mirrored in each eye, so how can this happen differently? Science calls this unique form of genetic expression “mosaicism.” This means that two different genotypes are developed in a single egg when it is fertilized. So instead of having one gene for eye color, people have two. For instance, they may have one blue eye and one green eye.

The reason for calico cats

Cats often have two different colored eyes, and this is more common in females. The reasons mosaicism occur are gene mutations, chromosomal mutations, unusual cell division in mitosis, and X-inactivation that sometimes happens in female mammals. In particular, deactivating one of the two X chromosomes in female cats results in the calico fur markings. This is why calico cats are always female. Calico females may also have two different colored eyes due to having a predisposition for mosaicism.

The real reason David Bowie has two different colored eyes

Genetics aside, there is a reason that the eye color can change and it is due to an injury. While people can be born with two different colored eyes as a gene expression, David Bowie had an injury to his eye that caused it to start looking different. In particular, David Bowie had an injury to one pupil that caused it to become permanently dilated.

Prevent permanent eye color changes due to injury

When you have a problem with your eyes, it can be easy to be dismissive of the problem. However, in some cases, injuries to the eyes can be treated to prevent permanent damage like eye color changes. To get the sound advice you need for your vision and eye health, contact us today. We are always happy to help you with any questions you have, and we look forward to seeing you at one of The Vision Centers locations.

When A Migraine Aura Denotes Serious Health Problems

migraineIn some cases, a person that is having a migraine will have visual disturbances called auras. Some visual disturbances are so out of the ordinary that a person experiencing them may feel inclined to follow up with a doctor. Unfortunately, there are some signs that the migraine aura might be a true ambulance emergency.

What is a migraine aura?

There are common visual change patterns found in migraine auras. This includes lights being brighter than usual, losing part of your field of vision, small dots appearing, a hologram effect when you look around the room, visual tracers, and colors appearing more intense than usual. While light sensitivity is common with migraines, having colors, figures, or patterns appear where they do not normally present in the field of vision is a migraine aura.

The new and different rule

When a person experiences migraines regularly, it can be difficult for the patient to know when a migraine is a bigger problem that a doctor needs to treat immediately. For chronic migraine sufferers, there is often a symptom pattern. If the patient notices that their migraine symptom pattern has a “new or different” symptom, this means they should go to the emergency room immediately. For someone that has had migraines in the past without an aura, having a migraine with aura for the first time could indicate a medical emergency.

Migraine auras because of non-migraine health problems

Migraine auras do not always present when the person has a migraine, and that can be rather disorienting to the person experiencing the vision disturbances. Along with being part of a normal migraine, aura-type vision issues could mean that you have a brain tumor, the beginning of a neurological disorder, or have had an aneurysm or stroke. Furthermore, vision issues that mimic migraine auras can be signs that you have preventable and correctable blindness-related issues like a detached retina.

Regular vision checkups protect your overall health

While getting your eyes examined seems like it is only focused on one part of your body, this is not true. Your eye health can help indicate that you have other issues throughout your body. In addition to potential health problems related to visual disturbances like migraine aura, an eye doctor can also detect complications due to diabetes, potential cardiac issues, and more. To get started with your next vision exam, give us a call. At The Vision Centers, we are happy to answer any of your questions and work with you to improve your overall health.

Why Eyelid Twitches Can Be Serious

A random eyelid twitch does not evoke much thought for most people, but others notice that something is out of the ordinary when their eyelid is twitching. Although most eyelid twitching is harmless, when is it actually a true problem that needs medical attention? After reading through the basics, give us a call if you think you need more serious attention.

Why eyes twitch

eyelid twitchIn general, the involuntary and repetitive spasms that cause eye twitching is due to muscles in that area called blepharospasm. Any kind of agitation of these muscles that control the eyelid can induce tics, twitches or spasms. They have been known to last seconds, hours, days, or even weeks.

Why eyelids are twitching

There are several common causes for persistent eyelid twitching that are completely normal. For instance, lack of sleep, stress, drinking too much alcohol and coffee, being hungry, smoking, or computer screen eyestrain is all causes to make the eyelid muscles twitch. One of the easiest ways to treat these eye twitch causes is stopped doing the activities that promote them.

Serious medical reasons behind eye twitches

It can be alarming to know that your eye twitches are the sign of something more serious, but in rare cases, this is absolutely true. Viruses and neurological conditions can cause the eyelids to start twitching and are signs you need to seek medical attention immediately. There are also benign reasons that you may have eyelid twitching, such as Bell’s Palsy, that mimics serious conditions.

Get your eye exams with us

Regular primary care doctors may not understand the finer points of eye health. When you have an eye twitch and something does not seem right, you can come to us for an examination. We will take a look at your eyes and use our expertise to determine if there is a serious issue that you need to address. To get started, schedule an appointment at The Vision Centers today.

Get Your Laptop a Pair of Glasses

computer glassesWhen people reach the age of 40, some will notice that they are hovering over their computer screen just to be able to see. This is not uncommon, and is a sign of presbyopia. A normal part of aging, presbyopia is when the eye lens begins to stiffen and it becomes harder for the eye to focus on close objects. This is why older adults tend to need reading glasses to view computers, smartphones, and books. Despite this, is it likely that, in the future, you will not need your reading glasses for the computer because it will come with its own pair built in.

Computers that come with their own corrective lenses

Over the years, we have discovered that some computer screens cause eye strain, and improvements have been developed to correct this issue. Now, researchers at the University of California Berkeley are working on technology that will accommodate people that have presbyopia. Even if you have had LASIK vision correction surgery to deal with near-sighted or far-sightedness, this kind of advance could work for you.

How corrective lens computer screens will work

When your computer screen wears glasses for you, it will work as a vision correcting display that sharpens the image. The display has a printed pinhole screen that exists between two layers of plastic. The screen is then distorted with the touch of a button to give the sight-impaired person a clear image. Ultimately, it will replace a persons’ need to use glasses when they are looking at the screen.

Will these computer screens replace the need for eye exams?

While these types of computer screens are still in the development stage, everyone will continue to need an eye exam. Most people assume that you go for an eye exam because you need glasses, but this is especially not true for adults over the age of 40. Getting your sight tested is important, but an eye exam specialist is also looking for early signs of blindness, eye cancers, and other critical issues. To get your eyes tested for presbyopia or other potential eye diseases, stop by The Vision Centers today.

Preventing Winter Dry Eyes in Nevada

dry-eyesIn Nevada, we all take the time to put on sunglasses when it is summertime, but what about the winter? Believe it or not, eye pain problems like dry eyes can be prevented by wearing sunglasses, and winter is when these symptoms bother people the most. However, at The Vision Centers, we have several vital tips on dry eyes that give our customers the relief they need.

Symptoms of dry eyes

When people complain about having eyes that burn, sting, or feel like something is in their eyes, we will check them for Dry Eye Syndrome. Other common symptoms of chronic dry eyes include blurred vision and stiff eyelash follicles. In some cases, their eyes are so dry that it causes a secondary bacterial infection in the eye area from over-rubbing.

Who gets Dry Eye Syndrome?

Any person at any age can get dry eyes, but it tends to affect some groups of people more than others. For instance, post-menopausal women can get Dry Eye Syndrome as a side effect of hormone changes. People that have had eye or LASIK surgery can also get chronic dry eyes. In our experience, a majority of people will not realize they have this issue until winter hits.

Solutions for Dry Eye Syndrome

Some of our customers will require more extreme care for chronic dry eyes, but most can use a combination of several over-the-counter solutions. For instance, using non-prescription artificial tears can work for most. Taking Omega-3 fatty acid supplements and wearing sunglasses are Dry Eye Syndrome solutions that also help people feel comfortable. For wintertime relief, getting a humidifier for your home or workspace is an effective solution. If these symptoms do not improve with these methods, more intensive medical help is available.

Get complete eye care with us

If you think The Vision Centers only make glasses and give eye exams, think again. In addition to Dry Eye Syndrome, we are committed to helping each of our customers maintain maximum eye health. It may seem like a simple exam, but we are checking for problems like Dry Eye Syndrome, early signs of macular degeneration, melanoma cancers of the inner eye, and more. To get quality eye care you can trust, visit us at one of our Las Vegas locations today.

Is an Annual Eye Doctor Visit Necessary?

eye examTwice a year, you go see your general practitioner just to have a medical exam. ls the same true with an eye doctor? Do you need to check in every year or is this an unnecessary expense that you can avoid until you feel you need to get a new pair of glasses? Believe it or not, there are several ways that an annual eye exam can help you avoid serious illnesses making it a valuable tool for protecting your health.

Detecting cancers and tumors

Did you know an optometrist can be fundamental in detecting some brain tumors? In addition, certain types of cancer are specific to the eye and surrounding tissues. Without an exam from an optometrist, these conditions can be difficult to catch early.

Minimizing headaches and migraines

Instead of spending time and money on neurology appointments or treatments, getting your eyes throughly checked may be the simplest solution to prevent headaches. It is not true in all cases, but when you get headaches that are around your eyes and worsen as you are on the computer or driving for long periods of time. In addition to detecting any refractive problems with your eyes, several types of treatments can be coated on your eyeglasses that will reduce the amount of glare you deal with, therefore reducing the possibility of getting migraines.

Preventing blindness and degenerative eye diseases

Did you know that many people that slowly become blind over time do not realize how serious this can be? Avoiding treatment for blindness can often make getting medical help to get it corrected difficult. Thankfully, common degenerative eye diseases that lead to blindness can be picked up early if regular eye exams are made.

Finding signs of cardio-vascular issues

Are bloodshot eyes a sign of something else? In some cases, they could indicate an underlying health problem. For example, high cholesterol can show up in an eye exam without drawing any blood. High blood pressure can also cause physical changes to the blood vessels inside your eyes.

Eyes can indicate a pre-cursor to diabetes

Signs of diabetes can appear in your eyes years before you get a diagnosis for diabetes. Diabetic retinopathy, for instance, can be a sign that you are having blood sugar problems. When an optometrist does the eye exam and sees the signs of retinopathy, you will be immediately referred to your primary caregiver for more tests.

Schedule your annual eye exam today

Most people have health insurance that covers an annual optometrist visit plus a new pair of corrective lenses. When the time comes to make your annual exam, visit us at The Vision Centers. With 4 convenient locations, we can get you in and out of our offices on your lunch break. To get started, visit us or give us a call. Thank you again for considering us!

Are You Using the Right Lens Treatment for Your Eyeglasses?

As someone that wears eyeglasses, do you know what types of lens treatment they come with? At The Vision Centers, we look forward to providing the latest lens treatment options to our customers. This includes UV protection, tints, scratch resistance, polarization, anti-reflective, and photochromic options. To get a better idea of what we have to offer, keep reading.

How anti-reflective coating helps you

Anti-glare or AR coating is a permanent and durable film on your eyeglass lenses that will improve your vision. When you wear glasses with anti-reflective coating, you will not have as many problems with glare while driving at night.

Anyone that uses a computer for extended periods of time will find that the AR coating will help their eyes feel less strained.

Extend the life of your glasses and protect your vision

When you have a rough and tumble job, children or a habit of cleaning your glasses with a paper towel, scratch-resistance is a lens treatment you will want. This also helps them to avoid getting scratched when you drop them on the floor.

Scratch-resistance creates a harder surface for your eyeglass lenses overall. Another coating that can be added is UV protection. One of the reasons it is added is because it will keep your eyes from getting damaged by the sun’s rays.

Cut the glare with tinted, photochromic, and polarized lenses

When you need your eyeglasses to protect you from glare, there are two other ways to do this besides anti-reflective coating. For instance, you can have your lenses polarized to cut haze and glare. Polarized lenses mean that a special filter is added to block intense, reflected light.

Adding photochromic coatings to your eyeglasses means that they will automatically respond to sunlight by growing darker. This is different than tinted lenses. A tinted lens will not transition from light to dark. Tints, on the other hand, are the perfect solution if you need increased contrast and depth perception.

Get improved glasses today

To get a pair of glasses with coatings that will improve your ability to see and protect your overall health, stop by the The Vision Centers today. With four convenient locations throughout the Las Vegas area, we are happy to answer any of your questions at our business or over the phone. Thank you in advance for being our customer, and we look forward to meeting you.

Why Runners Need Eye Protection

Are you a runner that is prone to getting headaches from sun glare? Or, do you have problems with bugs and dust creating painful styes? Finally, you may be concerned about developing skin cancer around your eyes because sunscreens are easily removed from the skin due to frequent sweating. While running is a great exercise, it is important to take care of your eyes before you hit the trails.

At The Vision Centers in Las Vegas, we regularly give advice to runners about ways to decrease their chances of damaging their eyes during this activity. From prescription sunglasses to techniques proven to deter UV rays, we have the answers you need. To speak to one of our optometrists or opticians, give us a call today.

How the sun damages a runners’ eyes

Runners are usually performing their activities outdoors, and this means that they must be diligent against developing skin cancer. Unfortunately, reports from top researchers around the world have agreed that the sun does not only cause skin cancer. Instead, UV rays can also damage parts of the eye including the retina, cornea, and lens. In some cases, it is thought to be a contributor to cataracts and macular degeneration.

Preventing eye damage for runners

One of the best ways to protect your eyes as a runner is to keep them covered. This means that you may need sunglasses that have your prescription in them that cover more of your face. For example, wraparound prescription sunglasses mean you are covered on all sides.

These types of glasses found in an optometrist’s office can help to block UV rays, but they also keeps dirt, sand, and insects from damaging the area around your eye. Generally speaking, they are sunglasses that are high-caliber enough to block the sun’s harmful rays will have 99 to 100 percent UA and UVB blocking abilities.

Get a pair of runner’s sunglasses today

To keep your eye health in optimal condition during any physical activity, consult with the experts. We will gladly schedule you for an appointment at one of our four Las Vegas locations, and we are dedicated to bringing you the high-quality care you need. Do not continue to take chances with your eye health, and give us a call at The Vision Centers today.

Glaucoma is Genetic?

Glaucoma is Genetic? Three Studies Verify Specific Genes

Do you suspect that you or a loved one has glaucoma? When you have a problem with this issue in your biological family, it is understandable to suspect that other family members may also experience this condition. Unfortunately, research now shows that glaucoma is genetic, and have found three specific genes related to this condition.

If you carry this diagnosis in your family, do not worry. With four locations in Las Vegas, we are happy to help you with all of your vision-related needs. From testing to new visual aids, we can put you in touch with specialized care for any optometry-related or ophthalmological condition. Just give us a call to stop by to discuss your family history before glaucoma develops.

What is glaucoma?

Glaucoma is not one illness, but a group of eye diseases that can result in partial or total blindness. It can affect the optic nerve or other parts of the eye. The majority of cases are caused by an increase in fluid pressure in the eye, caused by fluid not easily flowing through the front part of the eye. Glaucoma is completely asymptomatic in the vast majority of cases, until the very end-stage when patients notice a problem with their peripheral (side) vision.

Studies that show glaucoma is genetic

Commonly thought to be a sign of aging, in fact, glaucoma can strike anyone at any age. Now, researchers have shown that genes play a role in this disease. In particular, studies published in August, 2014 by a journal called “Nature Genetics” say that at least six genes are connected to glaucoma inheritance. Sources like ABC Science Australia state that the three studies conducted concluded that mutations on the ABCA1 gene is a primary indicator that an individual will develop glaucoma.

Hope for future and present glaucoma patients

One of the best ways to diminish the effects of glaucoma is to receive treatment as soon as possible from your optometrist or ophthalmologist. By having ways to diagnose patients early, treatments to prevent sight-damaging effects of glaucoma can be given. Preventative vision-care treatments include topical medications, along with various laser or traditional surgical procedures.

Get treated for glaucoma today

Whether you have glaucoma now or have a strong family history of it, you can get the help at The Vision Centers today. We can answer your questions about this condition, and get you prepared for the preventative care you will need. Located throughout Las Vegas, we have five highly-skilled doctors that will help you to see clearly. Give us a call or stop by our four locations to get treated.

Contact Lenses and Eye Damage

Contact lecontactsnses are very safe devices that have made life easier and less aggravating for many individuals with vision problems. However, wearing them can potentially damage your eyes if you fail to clean them properly or allow them to stay in place longer than the amount of time recommended by your optometrist. Even though it is not probable that your contacts will permanently damage your eyes, it is a good idea to familiarize yourself with the potential hazards associated with their use.

The Role of Oxygen

Due to the fact that corrective contact lenses sit directly on the surface of the eye and cover all or part of the cornea, less oxygen reaches your eyes whenever your contacts are in place. In order to keep your eyes healthy, a generous oxygen supply is necessary. Therefore, if you wear contacts for an inappropriate length of time, you are limiting this supply of oxygen and possibly damaging your eyes. Fortunately, there are several avenues through which to prevent damage from oxygen deprivation.

Choosing the Best Material

One of the best ways to avoid eye damage is to religiously follow the wearing schedule provided by your eye doctor when you first obtained your contact lenses. In addition, choosing silicone hydrogel lenses or gas permeable contacts may also benefit your eyes, as this material is considered by most experts to be safer for your eyes than the materials used to manufacture traditional soft contact lenses.

Bacteria and Germs

Another factor that plays a role in eye damage for contact wearers is the buildup of germs and bacteria on the surface of the lenses. As time goes on, this accumulation occurs on both sides of the contacts, ultimately leading to eye infections. Although the latter can be cured, it is important to understand that permanent damage is possible.

Following a Proper Replacement Schedule

Even if you religiously adhere to the directions provided regarding your contacts, deposits will eventually build up on the surface of the lenses. This is why the longer you wear a specific set of contacts without replacing them, the greater risk there is of the aforementioned deposits reducing the oxygen supply to your eyes and subsequently causing damage. This is why it is important to dispose of and replace your contact lenses according to schedule given to you by your eye doctor. Finally, never skip routine eye examinations, as your optometrist is trained to keep your eyes healthy and safe by detecting problems before eye damage occurs.