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10 Eye Health Tips To Protect Your Vision

Discussion in 'Ophthalmology' started by Egyptian Doctor, Oct 21, 2013.

  1. Egyptian Doctor

    Egyptian Doctor Moderator Verified Doctor

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    1. Keep Screens at a Distance
    Screens have proliferated far beyond laptops and desktops. Now there are smartphones, tablets, e-readers, and MP3 players—not to mention the screens that we encounter at airports, subway and train stations, movie theaters, and sporting events.

    The contrast and the glare of an electronic screen can eventually lead to eyestrain and, in some cases, computer vision syndrome, which happens after prolonged use. Symptoms can include headaches, blurred vision, neck pain, dry or red eyes, fatigue, double vision, and difficulty refocusing.

    It’s actually middle-aged people who spend the most time in front of screens—an average of 9.5 hours a day, according to a study by the Council for Research Excellence.

    “Not only are we viewing screens for longer periods without breaks, but we’re working with handheld devices at closer distances than we would with printed materials,” said optometrist Mark Rosenfield, a professor of clinical education at the State University of New York College of Optometry, in Manhattan. (And as you age, the closer you are to an object when you read it, the more work your eyes have to do to maintain focus.)

    Experts recommend that you keep your eyes at least an arm’s length from a computer screen and 16 inches from a handheld device. However, according to a 2011 paper published in the journal Optometry and Vision Science, people on average hold smartphones about 14 inches away when reading and sometimes as close as seven inches.

    If you can’t easily read the text on your handheld’s screen from at least 16 inches away, increase the font size. To minimize eyestrain with any device, make sure that you’re reading in soft lighting that doesn’t cause glare. For a desktop computer, consider investing in an antiglare filter that clips to the monitor.

    2. Take Blinking Breaks
    In everyday life, we blink about 15 to 20 times a minute. But that rate drops by half when we’re viewing text on a screen.

    “Blinking is important because the upper eyelid spreads tears over the front of the eye, or cornea, just like a windshield wiper works,” Rosenfield said. “If you don’t do it enough, the cornea can dry out and feel irritated.”

    He recommends using the 20/20/20 rule when staring at a screen: Every 20 minutes, look 20 feet away for 20 seconds so you can blink naturally and give your eyes time to relax. If you suffer from chronically dry eyes, try using a laptop instead of a desktop computer.

    When you’re looking down at a laptop, less eye surface is exposed and there’s less tear evaporation and your eyes stay more moist. If you have to use a desktop, raise your chair or tilt your screen four inches below eye level, as measured from the center of the screen, so you aren’t looking straight ahead. Find more dry eye treatments.

    3. Wear Shades

    Over time, exposure to ultraviolet (UV) rays can deteriorate vision, leading to cataracts (a clouding of the eyes’ lenses); age-related macular degeneration, or AMD (loss of sight in the center of the field of vision); and noncancerous and cancerous growths on the eyes’ surface, eyelids, and surrounding skin, according to optometrist Rachel Cohn, the owner of the Wink Eyecare Boutique, in Potomac, Maryland.

    The American Optometric Association recommends sunglasses that block at least 99 percent of UVA and UVB radiation and that screen out 75 to 90 percent of visible light. Look for an “ANSI” sticker on the sunglasses, which indicates that they meet these guidelines as proven by the American National Standards Institute. And if you plan to spend a lot of time outdoors, it’s a good idea to get sunglasses with lenses that are polarized, which means that they’ve been treated to reduce glare.

    Though a new generation of contact lenses can help deflect some of the sun’s harmful rays (such as Acuvue TrueEye, which is popular among dry-eye sufferers), they don’t cover the eyelids, “so you’ll still want to top off with a pair of sunglasses,” Cohn said. Find the perfect sunglasses for your face shape.

    4. Try a Seafood Diet

    You probably know that omega-3 fatty acids can bolster heart and brain health, but they can also decrease your risk of eye disease. According to a study published in the 2011 Archives of Ophthalmology, women who ate canned tuna and dark-fish meat (mackerel, salmon, sardines, bluefish, swordfish) just once a week had a 42 percent lower risk for AMD than those who ate such fish less than once a month.

    “Fish oils and fish-oil supplements are loaded with antioxidants that help prevent the damage from free radicals that can cause diseases like AMD,” Tanya Zuckerbrot, a registered dietitian in New York City, said.

    Another reason to go fish: Increasing your intake of omega-3s may also support healthier tear film. (Eat at least five to six four-ounce servings of fatty fish weekly.)

    5. Go for the Greens

    Carrots have a reputation as the go-to vegetable for healthy eyesight, and it’s true that “getting shortchanged on vitamin A, a key nutrient in carrots, could contribute to the deterioration of your vision,” Zuckerbrot said.

    But the real star nutrients are lutein and zeaxanthin—pigments found in such foods as dark, leafy greens, broccoli, zucchini, peas, and Brussels sprouts. Researchers from the University of Georgia in Athens discovered that leafy green vegetables may improve vision by reducing the stressful effects of glare and exposure to bright light, because they help absorb some of that light. Find more information on how a healthy diet can protect your vision.

    Further evidence for the power of produce: A British study published in the 2011 American Journal of Clinical Nutrition revealed that vegetarians had a 30 percent lower risk of developing cataracts than people who ate 3.5 ounces of meat a day.

    6. Start Steeping

    You may want to swap that afternoon cup of coffee for green tea: Not only is it hydrating (which helps you produce tears) but the brew also contains catechins, which are among a host of antioxidants (like vitamins C and E, lutein, and zeaxanthin) that may defend the eyes’ tissues from AMD and cataracts. Research from the Chinese University of Hong Kong has proven that catechins are absorbed in the highest concentrations by the tissues in the retina, the part of the eye that detects light.

    7. Treat Contacts With Care

    Approximately 85 percent of those who wear contacts claim that they’re caring for their lenses properly, but only 2 percent really are, found one study conducted by the University of Texas Southwestern Medical Center, in Dallas.

    “One of the most harmful but common infractions is moistening contacts with saliva instead of saline solution,” said Eliot Grossman, the chief of eye health and optometry for LensCrafters, in Orange County, California. “Hundreds of bacteria from your mouth will be introduced directly to your eye, which could cause a serious infection.”

    The same is true for water or any other “nontraditional” substance. (In one study, people fessed up to moistening contacts with everything from beer to butter to baby oil.) And always store lenses in fresh solution.

    Grossman also recommends removing lenses even before naps and giving your eyes a break by wearing glasses once a week. And to keep your contacts and their case bacteria-free, wash your hands before handling them and replace contacts as frequently as prescribed.

    8. Make Over Your Makeup Routine

    Bacteria can thrive in mascara, so toss the tube after three months. Also, sharpen liner pencils regularly. It’s okay, of course, to line the base of your lashes, but “putting liner inside the lash line can block the oil glands, which protect your eyes’ surface,” Dr.Ruth D. Williams, a former president of the American Academy of Ophthalmology, said .

    9. Get Your Goggles On

    You don’t have to work on a factory floor to sustain an on-the-job injury. According to a 2008 study from the American Academy of Ophthalmology and the American Society of Ocular Trauma, of the 2.5 million eye injuries that Americans suffer annually, nearly half happen at home.

    “People understand that you need safety glasses or goggles when using power tools. But we should also wear them for things like yard work, basic home repairs—like sawing, sanding, drilling, nailing, painting—and certain cleaning jobs, like cleaning the oven,” said Justin Bazan, a Brooklyn-based optometrist and a medical adviser to the Vision Council. “Chemicals tough enough to clean appliances will damage eyes on contact.”

    10. See a Doctor

    Even if you’re not among the 81 percent of Americans who need corrective eyewear, experts recommend that all adults get a comprehensive eye exam (during which the doctor dilates your pupils with drops) by age 40. Follow up with yearly exams thereafter or as recommended. Go sooner if you have symptoms such as persistent pain inside or behind your eyes, redness, or gradual loss of vision. You also may need to start earlier if a family member had glaucoma or you have diabetes, which puts you at a higher risk for vision-related issues.

    A comprehensive eye exam can also be an important barometer of overall health.

    “The eyes are the only part of the body where we can view arteries and veins without surgery or incisions,” said optometrist Andrea P. Thau, an associate clinical professor at the State University of New York College of Optometry and a spokesperson for the American Optometric Association. “This allows an eye doctor to assess your risk for things like stroke, diabetes, cardiovascular disease, brain tumors, aneurysms, and multiple sclerosis.”

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