Types of glaucoma

An Overview of the Different Types of Glaucoma

October 11, 2016 by Anne Arundel Eye Center

The term Glaucoma actually refers to a group of eye conditions that lead to intraocular pressure (IOP) and damage the optic nerve, the nerve that carries visual information from the eye to the brain. This pressure comes from a buildup of normal fluid called the aqueous humor, which is naturally and continuously produced in the front of your eye.

The different types of glaucoma include:

Primary Open-Angle Glaucoma: Affecting around one percent of all Americans (mainly those individuals age 50 or older), it is the most common form of glaucoma. And because this form of glaucoma develops slowly, it rarely ever presents any symptoms and often goes undetected without regular screenings.
Normal Tension Glaucoma: Also known as Low-Tension Glaucoma, this form is characterized by progressive optic nerve damage and visual field loss with a statistically normal IOP. The lack of blood flow and the decrease in oxygen to the optic nerve is directly related to this form of glaucoma.
Angle-Closure Glaucoma: This form of glaucoma is related to narrow angles. And with several subcategories – including Intermittent and chronic Acute Angle-Closure or Narrow Angle-Closure – this form affects nearly 500,000 Americans, but is most common in people of Asian descent or those individuals with farsightedness (hyperopia). Unlike POAG where the IOP increases gradually, Angle-Closure Glaucoma is characterized by a sudden increase in IOP, often in only a matter of hours. This dramatic increase in IOP can cause severe eye pain, nausea, vomiting, blurry vision and headache. An acute attack is an emergency condition. Long-term effects of Angle-Closure Glaucoma include: scarring of the trabecular meshwork, resulting in chronic glaucoma; cataracts; damage to the optic nerve; permanent vision loss.
Pigmentary Glaucoma: This form is a type of inherited open-angle glaucoma, which develops more frequently in men than in women and is most prevalent in individuals in their twenties and thirties. Pigmentary Glaucoma is associated with near-sightedness (myopia).
Trauma-Related Glaucoma: A blow to the eye, chemical burn, or penetrating injury may lead to the development of either acute or chronic glaucoma.
Childhood Glaucoma: Also referred to as Pediatric Glaucoma, the approach to treatment is slightly different than with glaucoma in adults and almost always requires immediate surgery to relieve IOP. Approximately 80-90 percent of babies who receive prompt surgical treatment, long-term care, and monitoring of their visual development will do well, and may have normal or nearly normal vision for their lifetime. However, if the disease is not caught early more permanent vision loss will result.

The most common symptoms of glaucoma include:

Vision loss (most commonly tunnel vision – the gradual loss of peripheral or side vision)
Severe eye pain
Nausea and vomiting
Sudden onset of visual disturbance
Blurred or blurry vision
Halos around lights
Reddening of the eye

If you feel you may be experiencing any of these symptoms, schedule an appointment with your eye doctor immediately. These symptoms are serious and require prompt medical attention from your optometrist or ophthalmologist.

However, many people do not experience any symptoms until they begin to lose their vision. At this point, the damage is irreversible. This is why regular eye exams are so important. While there is no cure for glaucoma, early detection and treatment are your best options to slow or even prevent further vision loss brought on by the disease. Without treatment, glaucoma can lead to permanent vision loss.

Glaucoma is the second-leading cause of vision loss in the United States behind only cataracts.

If you have any questions about what you have just read, please contact board certified ophthalmologist Samuel Boles and the eye care specialists at Anne Arundel Eye Center by calling 410-224-2010 or click here to visit AnneArundelEyeCenter.com today!

For more eye care advice and information, please take a look at our previous blog posts.

Sources:
Types of Glaucoma GlaucomaFoundation.org

What are the Different Types of Glaucoma? :: Annapolis, Maryland Eye Doctor

November 2, 2012 by Anne Arundel Eye Center

What many people do not realize is that the term glaucoma actually refers to a group of eye disease that lead to damage of the optic nerve, usually resulting from a rise in intraocular pressure (IOP). The optic nerve carries visual information from the eye to the brain.

The various types of glaucoma include:

Open-Angle Glaucoma: The most common form of glaucoma, open-angle glaucoma is what most people think of when referring to glaucoma.

Low-Tension Glaucoma: Also known as normal-tension glaucoma, this form of the eye disease causes optic nerve damage and vision loss in people with normal intraocular eye pressure.

Angle-Closure Glaucoma: In this form of glaucoma, the fluid at the front of the eye cannot reach the angle to leave the eye, causing a sudden increase in eye pressure.

Congenital Glaucoma: Congenital glaucoma occurs when children are born with a defect in the angle of the eye, slowing the normal drainage of fluid and the eventual increase in eye pressure.

Pigmentary Glaucoma: This is a type of inherited open-angle glaucoma, which develops more frequently in men than in women and is most prevalent in individuals in their twenties and thirties.

Trauma-Related Glaucoma: Trauma to the eye can sometimes result in the development of glaucoma in the injured eye.

Pseudo-Exfoliation Glaucoma: This type of glaucoma is characterized by the production and progressive accumulation of a dandruff-like material in the ocular tissues.

Secondary Glaucoma: This refers to any glaucoma that develops as a complication of other medical conditions.

Glaucoma Detection and Treatment in Annapolis, Maryland

In its earliest stages, glaucoma presents little or no symptoms. Because of this, many patients can lose as much as 40% of their vision before even noticing, which is why glaucoma is sometimes referred to as the sneak thief of sight. And once a person begins to lose their vision, the damage is irreversible. This is why regular eye exams are so important.

With early detection and treatment, glaucoma can be managed. If left untreated, glaucoma can and does lead to total blindness.

Located in Annapolis, Maryland, Anne Arundel Eye Center (AAEC) is a regional leader in the diagnosis and treatment of glaucoma. Not only does an AAEC offer a wide range of advanced procedures to improve and preserve your vision, but board certified ophthalmologist Dr. Samuel Boles is passionate about further educating patients and their families about the eye disease they are afflicted with.

To learn more about Glaucoma, please contact board certified ophthalmologist Dr. Samuel Boles, consultative optometrists Dr. Nathan Frank and Dr. Corinne Casey, and the eye care specialists at Anne Arundel Eye Center by calling 410-224-2010 or click here to visit AnneArundelEyeCenter.com. Staffed by caring and knowledgeable professionals, our state-of-the-art treatment center is dedicated to making the best eye care accessible to everyone.

For more eye care advice and information, please take a look at our previous blog posts.

You can also follow Anne Arundel Eye Center on Facebook, Twitter, Google+, and YouTube as well!

Glaucoma: An Overview from Dr. Nathan Frank

January 30, 2012 by Anne Arundel Eye Center

According to a survey conducted in 2002 by Prevent Blindness America, 30 percent of Americans have never heard of
glaucoma and only half of those participating in the survey actually knew what it was. Glaucoma is the second leading cause of blindness in the world, and specialists believe that roughly 2.2 million people in America are affected. Only half of these individuals know that they have the disease. Given that January is Glaucoma Awareness Month, this is a great time to review the condition so that you, as patients, can become better informed and more knowledgeable.

Glaucoma is a multi-factorial disease that causes damage to the optic nerve that eventually leads to vision loss. Peripheral (side) vision loss occurs due to damage of the optic nerve of eye, which is similar to a fiber optics cable with about 1.2 million fibers that send images from the eye to the brain. There are two main types of glaucoma: primary open angle glaucoma and angle closure glaucoma. Both are usually marked by increased eye pressure inside the eye, but differ in the anatomical structure of the drainage system of the eye.

Risk factors for glaucoma? Everyone is at risk for glaucoma, newborn babies and senior citizens alike. However, there are several groups of people with an increased risk of developing the disease. Risk is heightened by:

Race (African Americans, Asians and Hispanics)
Diabetes
High blood pressure
Steroid Use
Age (People over 60)
History of eye trauma
Family History of glaucoma
High near-sighted patients

What are the common symptoms of glaucoma? The majority of people that have glaucoma are without symptoms. The visual symptoms that do occur tend to occur later in the disease process.

How to diagnose glaucoma? A comprehensive eye evaluation is imperative to rule out any suspicion for glaucoma. There are several important factors that need to be assessed prior to making a diagnosis. These include: measurement of eye pressure (normal range 12-22), a close assessment of the optic nerve, a peripheral visual field measurement, an exam of the drainage system of the eye, and finally a measurement of the cornea of the eye. These measurements are repeated once or twice a year or more often if there is any concern about progression.

How is glaucoma treated? The best way to protect your vision if diagnosed with glaucoma is to continue care
with your eye care provider. The goal of treatment is to lower the intraocular pressure to prevent further damage to the optic nerve. When diagnosed with glaucoma, the first line of treatment usually starts with the use of a single eye drop that is instilled once a night. If further pressure lowering is needed, additional drops can be used. Further treatment options include laser therapy or, if necessary, surgical treatment.

Glaucoma is a very complicated disease and this is only a brief overview. Some questions may still remain; a great
resource for information is glaucoma.org, a website that is constantly updated with information for those with glaucoma and for those who may know others with glaucoma.

If you have any further questions and would like to learn more about Glaucoma Detection and Treatment, please Dr. Frank and the eye care specialists at Anne Arundel Eye Center by calling 410-224-2010 or click here to visit AnneArundelEyeCenter.com today!

Cast your vote now for Anne Arundel Eye Center, Dr. Samuel Boles and Dr. Frank in Chesapeake Family Magazine’s Favorite Docs 2012! Voting ends on March 15th.

Dr. Boles and everyone else at the Anne Arundel Eye Center proudly support the efforts of The Polakoff Foundation and their role in the ongoing fight against glaucoma. Click here to purchase tickets online for the Polakoff Foundation’s Mardi Gras Celebration to help raise money to aid the fight against blindness.

Located in Annapolis, Maryland, the Anne Arundel Eye Center offers comprehensive specialized ophthalmic exams as well as diagnostic pre and post-surgical eye care. Specializing in glaucoma and cataracts, Dr. Boles has helped restore and preserve thousands of patients’ vision.

Glaucoma and Cataracts may be a natural part of aging. Losing your vision doesn’t have to be.

For more eye care advice and information, please take a look at our previous blog posts.

You can also follow Anne Arundel Eye Center on Facebook, Twitter, Google+, and YouTube as well!

Glaucoma: Finding Out If You Are At Risk

July 22, 2011 by Anne Arundel Eye Center

You may have heard of glaucoma which is a common eye disorder and one of the leading causes of blindness in the United States. But what else do you really know about it and are you at risk?

Glaucoma is an eye disease in which the optic nerve suffers damage and can permanently impair vision in the eye(s). There are different types of glaucoma and the disease can present itself without warning or symptoms. The most common form is the result of elevated pressure of the fluid in the eye and sometimes other factors that cause the fibers running through the optic nerve to slowly deteriorate. Without treatment, glaucoma can lead to permanent vision loss.

Who is at risk?

Everyone is at risk. However, certain factors can increase that risk, including: if you are over 60 years of age, if you are African American, if you have high myopia (nearsightedness), diabetes, hypertension, or if you are a steroid user.

Over 3 million Americans have glaucoma, yet half are unaware that they even have the disease. This is why regular eye exams are so important. While there is no cure for glaucoma, these eye exams, early detection, and treatment (medication and possibly surgery) can help slow or even prevent further vision loss brought on by this disease.

So, when was the last time you had a thorough eye exam?

If you would like to schedule an appointment with Anne Arundel Eye Center to meet with cataracts and glaucoma specialist Dr. Samuel Boles, or if you simply have a questions about what you have just read, contact Anne Arundel Eye Center by calling 410-224-2010 or click here today!

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