Posts Tagged glaucoma

The Jittery Eye – Does Caffeine Increase Eye Pressure?

coffee eyesCaffeine has long been a staple of the American diet  – from the first cup of joe in the morning to the midday pick-me-up. In fact, coffee is the number one source of antioxidants for Americans.  But caffeine itself has been associated with negative health benefits including increasing pressure in the eyes, and therefore possibly contributing to glaucoma.

A new study has found a novel approach to answer the question of whether caffeine does indeed increase eye pressure.  According to the journal Clinical Ophthalmology, researchers from the University of Maryland School of Medicine have teamed up with the Chandra Eye Research Institute in India to put caffeine directly on the eye and study its effects.

The researchers isolated the caffeine to make a ‘caffeine eye drop’ that they dropped in eyes of five glaucoma patients twice a day for one week.  In the end, they concluded that caffeine had no effect on intraocular pressure in either the one-day follow up or the one-week follow up.

Incidentally, there were no reports of increased eyelid twitching or withdrawal symptoms.

This counteracts the finding from a 2005 study which said caffeine does in fact increase the pressure.  However, that study used coffee as the source of caffeine, which has more variables than the pure caffeine eye drops.  Therefore any effects reported in coffee drinkers may be related to other components in coffee which may come about while roasting coffee beans at high temperatures or possibly from milk and sugar that’s added to the drink.

All the experts agree that small amounts of caffeine won’t cause your eye pressure to increase or cause glaucoma. However, if you have concerns that you consume too much caffeine, you should talk with your doctor to determine your appropriate and healthy level of caffeine intake.

If you have risk factors for glaucoma, such as high pressure or a family history, your doctor may recommend that you decrease your overall caffeine intake or at least lower it to safe levels.  Eye pressure can only be determined during eye exams and most glaucoma patients don’t feel their pressure increasing.  That is why it’s so important to have your eyes check routinely, to detect and prevent problems early, before they become sight-threatening.

 

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Drug Use Can Lead To A Common Eye Disease

According to the Journal of Glaucoma, the Department of Veterans Affairs has recently found that cocaine use is predictive of open-angle glaucoma – one of the most common types of eye disease.

After the results were adjusted for age, gender and race, former cocaine users were 45% more likely to develop this blinding eye disease. Men with open-angle glaucoma also had increased exposure to amphetamines and marijuana, although not as much as cocaine.

Even more surprising, those with a history of cocaine use developed glaucoma almost 20 years earlier in life, at 54 rather than 73 years old,  leaving them with a longer time for this degenerative disease to progress to total blindness.

Although this study showed an increased risk for glaucoma in people with a history of drug use, it does not prove a cut and dry relationship. However, it is unlikely that glaucoma preceded the use of illegal drugs, since substance use typically begins in the teens or twenties.

Glaucoma is the second leading cause of blindness in the United States behind diabetes. And even though the exact mechanism of vision loss in glaucoma is not completely understood, we do know that an increase in eye pressure gradually damages the optic nerve. Because this damage is slow and gradual, most people who develop glaucoma have no symptoms until late in the disease process when they’ve already lost substantial peripheral vision.

The study’s author Dustin French, Ph.D a research scientist with the Department of Veterans Affairs said:

The association of illegal drug use with open-angle glaucoma requires further study, but if the relationship is confirmed, this understanding could lead to new strategies to prevent vision loss.

As of now, eye pressure is the only risk factor for glaucoma that we can control, which can be lowered using eye drops or surgery.  If an association of cocaine use and glaucoma is confirmed in more studies, substance abuse would be a second controllable risk factor for this blinding disease.

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Bagpipes Are Bad For Your Eyes?

I just read a report out of Glasgow, Scotland saying that playing the bagpipes could lead to blindness. Apparently, blowing too hard into the instrument can increase the pressure in your eyes and possibly lead to Glaucoma.

The author of the study, Dr. Gunnar Schmidtmann said that bagpiper players who already have high blood pressure were at an increased risk. He added, “It doesn’t matter if you are a hobby musician or a professional, go to your optometrist frequently.”

So I guess there’s one more reason I won’t be taking up the bagpipes anytime soon.

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A New Pathway For Glaucoma Has Been Discovered

In a new study, researchers identified an unexpected biological pathway that appears to contribute to the development of glaucoma and its resulting vision loss.

Prior research has suggested that the optic nerve head, the point where the cables that carry information from the eye to the brain first exit the eye, plays a role in glaucoma.

In this study, researchers found abnormal forms certain proteins that are also known for their key role in cell loss in Parkinson’s disease. The findings suggest that a biological process similar to Parkinson’s disease unfolds in glaucoma at the optic nerve head.

Dr. Nicholas Marsh-Armstrong, senior study author and a research scientist at Kennedy Krieger Institute added:

These findings are very exciting because they give us several novel targets for future interventions. I believe these findings put us on the cusp of discovering a treatment for glaucoma that may also have relevance for a number of other neurodegenerative diseases.

Future studies will examine this novel pathway and molecular/cellular mechanism to understand precisely what steps go awry in glaucoma and what can be controlled pharmacologically to identify interventions that slow the disease progression.

Dr. Marsh-Armstrong and other scientists at Kennedy Krieger Institute collaborated on this study with colleagues at the Johns Hopkins University School of Medicine, University of California at San Diego, Cardiff University in England, and the University of Murcia in Spain.

Glaucoma is a neurodegenerative disorder that causes blindness by damaging the optic nerve, which sends signals from the eye to the brain. It affects more than 60 million people and is the second leading cause of blindness worldwide. While older individuals are at higher risk for the disease, babies and children are also susceptible to glaucoma, especially those with certain neurological disorders.

This information is brought to you by Clarin Eye Care, a family Optometry practice in Palmetto Bay, Florida.  Please call or contact our office for more information.

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Make a New Year’s Resolution to Schedule an Eye Exam

CHICAGO (Dec. 21, 2010) – As 2011 nears, many will be making New Year’s resolutions to improve their health. However, many may not be aware that an eye exam cannot only help to protect vision, it can uncover evidence of other diseases including diabetes or hypertension.

And, for eye diseases such as glaucoma, the damaging effects may be detected through an eye exam before a patient notices any symptoms. In fact, patients in the early stages of glaucoma usually have no symptoms, no noticeable vision loss and no pain, which is why it is called the “sneak thief of sight.” By the time symptoms start to appear, some permanent damage to the eye has usually occurred.

Glaucoma is the second leading cause of blindness in the world and the leading cause of blindness in African American and Hispanic populations in America. According to the study “Vision Problems in the U.S.” by Prevent Blindness America and the National Eye Institute (NEI), there are nearly 2.3 million Americans ages 40 and older who have glaucoma.

Glaucoma is an eye disease that causes loss of sight by damaging a part of the eye called the optic nerve. This nerve sends information from the eyes to the brain. When the optic nerve is damaged, peripheral vision begins to diminish. If left untreated, over time, glaucoma may also damage central vision. Unfortunately, once vision is lost to glaucoma, it cannot be restored. Vision loss can be lessened, however, if glaucoma is detected and treated early.

Prevent Blindness America has joined other leading eye care groups to build awareness during January’s National Glaucoma Awareness Month to educate the public on what they can do to help save their vision.

“Our key message is that, unfortunately, there is no cure for glaucoma. But the good news is that if detected and treated early, the effects of vision loss can be diminished,” said Hugh R. Parry, president and CEO of Prevent Blindness America. “We hope everyone has a happy and healthy 2011 and that it includes a visit to the eye doctor.”

Prevent Blindness America offers a dedicated website for free information on glaucoma at preventblindness.org/glaucoma.

This information is brought to you by Clarin Eye Care, a family Optometry practice in Palmetto Bay, Florida.  Please call or contact our office for more information.

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Emma Thompson’s Mother Fears the Oscar Winner May Go Blind

Emma Thompson at the Nanny McPhee London premiere
Image via Wikipedia

From the Herald Scotland:

Phyllida Law, the actress, has spoken about her fear that the blindness that struck her mother in later life will affect her daughters, Oscar-winner Emma Thompson and actress Sophie Thompson.

Glasgow-born Law, who has appeared in many of Emma’s films, including Nanny McPhee and Peter’s Friends, will appear on BBC Radio 4 next Sunday telling her personal and emotional story as part of the eye research charity Fight for Sight’s Christmas appeal.

Speaking exclusively to the Sunday Herald, the 78-year-old recalled how her mother’s glaucoma severely affected the last decade of her life. Law now suffers from the condition herself and fears the problem will, in turn, affect her daughters.

“She didn’t go completely blind, but her eyesight was extremely diminished,” she said. “Her ability to judge distance was diminished. She had tunnel vision really. She had to do things that blind people did, like put her finger on the top of a glass so she would know when it was full.

“Because of my mother’s condition, I was told rather firmly by the opthamologist to go get my eyes tested. I hadn’t had mine tested for ages.”

As a result, in 1993 Law was also diagnosed with glaucoma, but it was caught at a relatively early stage and was treatable. She needs eye-drops morning and night, which is “not inconvenient at all”.

“I’m a lucky one,” she said. “Glaucoma is rather creepy. You don’t know you have it because it doesn’t hurt. It means sometimes you don’t know you have it until it is too late. That’s what happened with my mother. She didn’t know she had it until it got really nasty.”

Glaucoma is the world’s second leading cause of sight loss. It occurs when pressure in the eye builds and, if untreated it severely damages the optic nerve. Around one in 50 people in the UK aged over 40 has glaucoma, rising to one in 10 over 75.

It is also hereditary. Once Law received her diagnosis she insisted Emma and Sophie be tested too. Their eyes are currently healthy, but Law still reminds them every year.

“Of course I worry about their sight,” she said. “I don’t get hysterical about it, but of course I worry. I’m a mother. I’m glad they get it checked.”

She said her concern for her loved ones was the reason for her fronting Fight for Sight’s Christmas appeal. Their work is “flipping brilliant”, she said. “Research happening now could not only improve treatments for me but could also save the sight of my children and grandchildren.”

Fight For Sight has been working in this area for 45 years. This year it spent £3 million funding research into ways of identifying glaucoma earlier and restoring sight lost through conditions such as age-related macular degeneration, cataracts, and diabetic eye disease.

This information is brought to you by Clarin Eye Care, a family Optometry practice in Palmetto Bay, Florida.  Please call or contact our office for more information.

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Why Our Office Won't Puff Air in Your Eyes

Our office has always believed in the “gold standard” method to measure our patient’s eye pressure.  Now a study has come out proving we’ve been doing it right from the beginning.

Inside of your eye, you’re constantly producing fluid to nourish the internal structures and, at the same time, your eye is draining this fluid.  This production and removal of fluid causes your eye to have its own intraocular pressure, which is unrelated to your blood pressure but can have serious effects on your health.

When the pressure is too high, it causes damage to the optic nerve in the back of your eye, which can lead to loss of vision.  That is called glaucoma – a common and very serious eye disease.

Glaucoma is a multifactorial disease that involves much more than just your eye pressure.  Your family history, age, corneal thickness and many other factors also play an important part.  Historically, the eye pressure alone has been used to screen for glaucoma.  This is the only factor we can manipulate, which we do through eye drops that lower eye pressure.

There are many ways to measure the pressure in your eyes, with the most common being that puff of air everyone seems to dislike.  The other is by using a yellow drop and bringing a blue light close to your eye.  It has always been known that the ‘blue light’ test, called Goldman Applaonation Tonometry (GAT), is the “gold standard” in measuring eye pressure.  The air-puff has not been shown to be reliable or repeatable.

A new study showed that using the air-puff alone led to 66% of over referrals, meaning many more people were falsely told they were at an increased risk of glaucoma. This costs the patient extra time and money only to find out everything is healthy and normal, which would have been known ealier by using the more effective way to measure eye pressure.

Our office has always believed in the most effective way of measuring eye pressure, even if it isn’t the fastest. We wouldn’t want to perform any test that isn’t reliable or accurate.  At Clarin Eye Care we take your eye health seriously. We want to be your eye doctors for a long time and care for your eyes the best, and only way, we know how.

This information is brought to you by Clarin Eye Care Center. Please call or contact our office for more information.

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Eye Care Is More Than Just Blurry Vision

The fear of going blind is a scary thought in most people’s minds.  However, Lighthouse International conducted a new survey showing six out of seven people that are at risk for, or who currently have, eye disease do not get annual eye exams.

Some of the reasons people may forgo eye care is the cost, the fear of hearing a worst case scenario from the doctor or because they don’t experience any trouble with their vision.  Of course if you wait until you experience a change in your vision, you can miss an early diagnosis of a possibly treatable or manageable disease.

For example, glaucoma and macular degeneration are two of the most common eye diseases.  Both of these have almost no symptoms early on — but can cause partial blindness and a loss of function in your life.  Both are also manageable, especially if they are discovered early.

These conditions are also much more likely to occur if there is a family history, so talking to your relatives and being proactive in your eye care are the two greatest things you can do.  You should see an eye doctor annually if someone in your family has been diagnosed with glaucoma or macular degeneration.

Vision loss, however, isn’t the only issue. A routine eye exam can also detect many other diseases in their early stages, including diabetes, autoimmune disorders, neurofibromatosis and even brain tumors.

Routine eye exams should be performed every year for those 40 and older, not just to check for blurry vision but to make sure your eyes, and body, are healthy. Call our office today to schedule the next step in your preventative medical care.

This information is brought to you by Clarin Eye Care Center. Please call or contact our office for more information.

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