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Cataract and Glaucoma Specialist

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Home > Archives for Cause of Vision Loss

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

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Education on Glaucoma and Cataracts Detection and Treatment

July 7, 2011 by Anne Arundel Eye Center

More than 3 million Americans have glaucoma, yet half are unaware that they have it, while cataracts, the leading cause of visual loss in people 65 and older, will affect half of adults by age 80. These are two very different diseases that have one big thing in common; they are both treatable if caught early.
Glaucoma
Glaucoma refers to a group of diseases that can affect your sight without warning and, if left untreated, can lead to blindness.

Everyone is at risk for glaucoma, however, certain factors may increase this 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.

The bad news is that there is currently no cure for glaucoma. The good news is that early detection and treatment (medication and surgery) have been proven to slow down or even prevent further vision loss due to glaucoma, which is why regular eye exams are so important.

Cataracts

A cataract, or clouding of the eye’s natural lens, is a disease usually brought on by age – affecting half of adults by age 80. After years of natural wear and tear, the lens becomes clouded, much like a clear plastic window on a convertible car that turns yellow after years of exposure to sun and weather.

Cataracts symptoms include: blurry sight and sometimes double vision; halos and glare—the eyes become dazzled by bright light, making night driving difficult; colors may become faded; and frequent changes in glasses prescription.

Whether you are experiencing symptoms of cataracts or you fear you may have glaucoma, the earlier you are diagnosed by a certified ophthalmologist, the more a  doctor will be able to help you without major intervention/surgery. If you feel you may be at risk, schedule an eye appointment right away.

At Anne Arundel Eye Center, a state-of-the-art treatment center offering complete ophthalmic exams as well as diagnostic surgical eye care, the staff works to not only treat you, the patient, but also educate you about your diagnosis.

“When you give people that knowledge and power, it gives them the ability to take part in their care,” Dr. Samuel Boles told What’s Up Magazine “Patients are more likely to comply with their therapy if they know what you’re asking them to do and why you’re asking them to do it. It’s important to me to help my patients understand the importance of taking care of themselves.”

Anne Arundel Eye Center is dedicated to making the best eye care accessible to everyone. If you have any questions, contact Anne Arundel Eye Center by calling 410-224-2010 or click here today!

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