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Why David Bowie Has Two Different Colored Eyes

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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.

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!

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.

What Do Retinal Photos Really Tell My Eye Doctor?

retinal-photoEye doctors strongly advise that patients get retinal photos taken as a part of their annual eye examination. These are photos of your optic nerve and retina, which can be used to diagnose a variety of diseases. Some of those conditions include diabetic retinopathy, macular degeneration and glaucoma.

Retinal photos should be taken on people on all ages. They are a great tool that can help keep track of one’s eye health. These photos will be placed inside of a person’s patient file. They can also be sent to one’s primary care physician. High blood pressure, diabetes and other medical conditions can affect one’s vision. That is why they have to be monitored consistently.

Did You Know?

Glaucoma is a condition that occurs as the result of damage to the optic nerve. If it is left untreated, then it will lead to irreversible vision loss. Glaucoma is the top cause of blindness in African-Americans. Diabetes and other health problems can increase the risk of this condition. Additionally, people who have a family history of this condition are at a greater risk for developing it.

Macular degeneration is the top cause of blindness in people who are over the age of 65. This condition affects central vision. It is sometimes referred to as age-related macular degeneration.

Diabetic retinopathy is one of the most common diabetic complications. It occurs when diabetes causes damage to the retina. It is the top cause of blindness in adults who are of working age. Managing one’s condition is one of the key things that can be done to prevent diabetic complications.

You should make sure that you ask your eye doctor about retinal photos during your next eye examination. Your eye doctor will also provide you with tips on things that you can do to keep your eyes healthy.

Anatomy Of The Eye: The Naked Truth

eyeThe human eye is an organ that is more complicated than many people realize. The eye has several parts that work together in order to help a person see. Below are the essential parts of the eye: Cornea The cornea is located at the front of the eye. It is very sensitive. The cornea is six layers thick. Some types of contact lenses can reshape the cornea. Conjunctiva It feels and looks like saran wrap. The conjunctiva has two main parts. One part covers the inside of the eyelid, and the other part covers the white portion of the eye. Conjunctivitis is a term that is used to describe eye inflammation. Some types of Conjunctivitis are not contagious. Anterior Chamber The anterior chamber is the space located between the between the iris and cornea. It is filled with fluid. Uveitis or iritis are medical terms for inflammation in this area. Sclera The sclera is the white part of the eye. The sclera also maintains the size and shape of the eye. Iris The iris is the colored portion of the eye. There are eyedrops that can be used to dilate this portion of the eye. Pupil The pupil is located in the center of the eye. It helps regulate the amount of light that can enter the eye. Red-eye photos are more common in people with larger pupils. Retina The retina is found in the back of the eye. It has ten layers. One of the layers of the retina has seven million cones and 125 million rods. The cones help detect color. The rods help detect shades of gray and are responsible for vision at night. Lens The lens is the structure inside of the eye that helps focus light on the retina. It is very flexible until we reach our 40’s. A clouding of the lens is a medical condition known as cataracts. Cataract surgery can be completed in less than 10 minutes. Optic Nerve The optic nerve transmits impulses from the retina to the brain. Glaucuma is an eye diseases that causes damage to the optic nerve. It is estimated that 2.2 million people in America suffer from glaucoma. Only 50 percent of people who have this condition know that they have it. Approximately 60 million people worldwide suffer from this condition. Vitreous Humor The vitreous humor is the jelly-like substance that helps shape the eye. Eye Muscles The human eye has six extraocular muscles that help control movement. There are also muscles inside of the eye and eyelids.

How To Tell If Your Child Is Ready For Contact Lenses

teen-contactsContact lenses are a great way for both children and adults to see the world more clearly without the hassle that comes with wearing eyeglasses. While many parents might think their child is ready for contact lenses, it is important to recognize a few key things before making the ultimate decision on whether a child is mature enough for delicate contacts.

If your child has expressed interest in wearing contact lenses, chances are they are already familiar with the basic way these corrective devices work. It is important to think about a few key things before making the ultimate decision toward contact lenses for your child. Some questions to ask yourself when considering contacts for your child:

“Is my child mature enough to take care of these?”

“Is my child familiar enough with proper hygiene procedures to properly treat these?”

“Will these improve my child’s quality of life?”

“Does my child have any medical conditions that could interfere with the contacts?”

“Does my child play sports?”

After you have asked yourself these questions, you can then begin discussing contact lenses with your child. While they may be wanting the lenses to participate in athletics, to improve their appearance or to make their life easier without the hassle of glasses, they must know everything about taking care of their contacts. Talk to your child about the amazing benefits that come with contacts, but also be sure to tell them about all of the responsibilities that come with wearing contact lenses. By doing this, you can get an idea of whether your child is actually ready for contact lenses.

If you are asking yourself whether your child is old enough, you may be thinking the wrong way. Contact lenses are designed for children as young as 8 years old and can be made to work with children of all ages. The most important question to ask yourself and your child concerns maturity, rather than age.

When parents and children are discussing contact lenses, it is very important that both the parent and child are on the same page. When parent-child units have a combined and clear idea of what they are looking for in contact lenses, they will be more successful at wearing contacts. Communication is key when you’re deciding whether contacts are a right fit for your child.