African and Hispanic ethnic groups and others with a family history of glaucoma are particularly vulnerable
Bainbridge – Glaucoma is a silent illness; most people have no early symptoms or warning signs as their peripheral vision diminishes or blind spots occur. It affects more than 2.3 million Americans age 40 and older. Another 2 million do not know they have the disease. January is Glaucoma Awareness Month, and Dr. Jason C. Cheung, MD wants to remind people that knowing your risk for the disease can save your sight. If untreated, glaucoma ultimately results in blindness.
“Glaucoma can be a ‘sneak thief’ illness, and currently there is no treatment to restore vision once it’s lost,” said Dr. Jason C. Cheung, MD. “But when we catch glaucoma early and closely monitor and treat people, we can significantly slow its progression and minimize vision loss.”
Among Americans, higher-risk groups include those of African or Hispanic heritage and others with a family history of the illness. Elderly individuals with African ancestry are five times more likely to develop glaucoma and 14 to 17 times more likely to become blind than similar-aged individuals with European ancestry. The risk for Hispanic Americans rises markedly after age 60. Those of any ethnicity who have a family history of the illness are four to nine times more susceptible.
A national survey commissioned in 2007 by the American Academy of Ophthalmology for the EyeSmart campaign found that only 24 percent of people in ethnic groups at higher risk for glaucoma were aware of their risk; only 16 percent of those with a family history of eye disease, including glaucoma, could correctly identify the risk factors for those diseases.
Other glaucoma risk factors include aging, nearsightedness, previous eye injuries, steroid use and health conditions including cardiovascular disorders, diabetes and migraine headache.
For individuals with symptoms of or at risk for eye diseases like glaucoma, the Academy recommends that they see their ophthalmologist to determine how frequently their eyes should be examined. The Academy recommends that those with no symptoms or risk factors for eye disease get a baseline screening at age 40, when the signs of disease and change in vision may start to occur.
Glaucoma damages the optic nerve, the part of the eye that carries the images we see to the brain. As glaucoma worsens, cells die in the retina — a special, light-sensitive area of the eye — reducing the optic nerve’s ability to relay visual information to the brain. In the most common form of the disease, open-angle glaucoma, peripheral vision usually narrows, then other blank spots occur in the visual field. Symptoms of the less-common but more acutely dangerous form of the disease, closed-angle glaucoma, include blurred vision, severe eye pain and headache, rainbow-colored halos around lights and nausea and vomiting. Anyone with these symptoms needs to be seen by an Eye M.D. right away.
More information on glaucoma and how to preserve vision, as well as how to access care, is available on the Academy-sponsored website, www.geteyesmart.org. Additional information is also available at the American Glaucoma Society website, www.glaucomaweb.org, and at the Glaucoma Research Foundation website, www.glaucoma.org. www.BainbridgeEyePhysicians.com
About Jason C. Cheung, MD
Adult & Pediatric Strabismus
Dr. Cheung is a board-certified ophthalmologist. He graduated with honors from McGill University Medical School, Montreal in 1991. The following year, he did his internship at the University of California, Los Angeles. His ophthalmology residency was at the University of Minnesota from 1993 to 1996. Following his residency, he completed a pediatric ophthalmology fellowship at University of Toronto in 1997 and a genetics fellowship there in 1998.
Dr. Cheung has been living in Kitsap County since 1998. He is married to Danielle, another physician and they have a daughter, Claire. In his free-time, he enjoys cooking, running, and traveling. He traveled around the world once in 1993.