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Hiển thị các bài đăng có nhãn eye care. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn eye care. Hiển thị tất cả bài đăng

Thứ Ba, 15 tháng 2, 2011

Vitamins & Herbs For Healthy Eyes


For Red Irritated Eyes:

Eyebright Solution:
  • 2 tablespoons eyebright herb (Euphrasia)
  • 2 cups of hot water
  • 2 cotton balls
  • Steep the herb in water for 3 minutes or until cooled. Strain. Dip a cotton ball into the liquid and wipe eyes. Reduces redness.
Improves Night Vision
Mix together 30 drops of Bilberry (Vaccinium myrtillus) with 8 ounces water, drink 3 times a day. Or drink 2 glasses of blueberry juice a day.
Improve Weak Eyes
Drink a glass of carrot juice daily
Relieve Eyestrain:
Place slices of cucumber over closed eyes for 15 minutes. Its cooling and refreshing to the eyes.
Reduce Swelling or Puffiness:
Use green tea that has steeped for five minutes and cooled. Wipe the eyes with this solution several times a day.
Drinking tea helps to deter cataracts.



Vitamins and Minerals For Eyes:

Vitamin A : Improves night vision. Food Source for vitamin A is dark green leafy vegetables, carrots, spinach, broccoli, eggs, cheese and butter are also great sources.
Vitamin B complex is good to reduce redness in eyes and can help eyes that are sensitive to light. Food Sources for vitamins B1 (thiamin), B2 (riboflavin), B3 (niacin), B6 (pyridoxine), B12 (cobalamin): pastas, breads, milk, dark green vegetables, mushrooms, tuna, nuts, avocados, bananas, liver.
Carotene allows the formation of visual purple in the eyes, which helps improve weak eyes. A good source of carotene is: carrots, broccoli, cabbage and peas.

Life Style and Eyes


Keep in mind that an athlete may still require protection against injuries during contact sports, no matter which type of vision correction he chooses. If there is any risk of being hit by a fast-moving ball or other object (as in racquetball, squash, hockey, etc.), eye protection is highly-recommended, whether you are wearing contacts or not. A polycarbonate eyeguard will not distort vision.
While some manufacturers have develSoped contact lenses that offer protection from ultraviolet rays, many lenses do not. In any case, sunglasses or dark goggles should be worn to protect the eyes in sunlight outdoors, particularly in such sports as swimming, skiing or ice-skating where they may be a lot of glare.
Performers&Actors: contactlenses on stage
Contact lenses provide a double benefit to the active lifestyles of performers, who may need to change or enhance their appearance while dancing, acting or participating in dramatic activities that may be as vigorous as a major league baseball game.
Before colored contact lenses were available to the public, movie stars were using them to change their eye color. Audrey Hepburn won an Academy Award for Wait Until Dark in 1967, in which she played a blind woman, wearing lenses specially designed to make her appear so.
Computer Use and Eyes
Instead of starring on the silver screen, or slugging home runs out of Fenway Park , a great number of people spend the majority of their workday in front of a computer screen. By one estimate, nearly 90 percent of those people working at a video display terminal (VDT) experienced some form of vision problem as a result.
How do you tell if your symptoms are related to your computer use?
VDT-related symptoms occur some time after you start work. As the workday progresses, your symptoms will become more acute. What are the symptoms that are related to computer use?
  • Difficulty focusing after working at a computer, with blurry or double vision
  • Eyestrain or eye fatigue
  • Headaches or backaches
  • Dry and/or irritated eyes
  • Neck stiffness or discomfort
  • After-images when looking away from the screen
  • Sensitivity to lighting
  • Muscle spasms 



    Are there environmental factors that could affect your symptoms?
    • Bright lights in your peripheral field of vision could add to discomfort or reduced visual performance.
    • Reflected light on your computer screen can decrease the contrast of screen characters and possibly force you to assume an awkward position to see around the glare.
      The location of your screen could cause awkward positioning.
    To determine the cause of your symptoms, you should visit your eye care professional. Before going to your appointment, however, take note of the environment in which your symptoms occur and at what times they are greatest. This will aid your doctor greatly in the diagnosis.
    If computer eyestrain is the diagnosis, there are simple methods to ease the discomfort:
    • don't focus on a single object for a prolonged period of time;
    • improve the lighting around your monitor;
    • blink often;
    • frequently close your eyes, then look far into the distance (down a hallway or out a
    • window) every 15-20 minutes to relax them;
    • sit at least 18-28 inches away from the screen;
    • tilt the monitor slightly below eye level; and
    • keep your screen dust-free to minimize visual interference. 


      What types of OTC eye-care products are there?




      There are seven types of OTC eye-care products available. Each product contains one or more active and inactive ingredients.
      1. Artificial tear drop: Lubricants (also called artificial tears) are synthetic (manmade), water-based solutions that are used to lubricate the eye and thicken tears. Artificial tears are formulated as solutions or suspensions, varying in viscosity. Popular examples of artificial tears include AquaSite, Bion Tears, Celluvisc, Duratears, Gen Teal, HypoTears, Liquifilm Tears, OcuCoat, Refresh, Systane, Tears Naturale, and TheraTears. Many people develop sensitivity to the preservatives in these solutions, causing increasing redness, burning or itching. Most of these products are also available in a preservative-free (PF) form. Artificial tears usually are used two to five times a day as needed for relief of symptoms.
      2. Ointments or emollients: Ointments also are useful lubricants. These products are not water-based and contain lubricating ingredients similar to petroleum jelly. Examples of ointments include Lacri-Lube, Moisture Eyes PM, and Refresh PM. Their advantage over a water-based solution is that they remain in the eye longer. These ointments cause visual blurring immediately after their use. Therefore, they are often used only prior to sleep.
      3. Eye washes: Eye washes (also known as ocular irrigants) are used to cleanse and/or rinse debris from the eye. These products are balanced to the proper acidity and electrolyte concentration so as to be non-irritating to the eye. Washes are available as liquids or drops. These products may contain boric acid with sodium borate, sodium phosphate, or sodium hydroxide to maintain the proper acidity. Examples of washes include AK Rinse, Dacriose, and Eye-Stream.
      4. Hyperosmotics: Hyperosmotics are used to treat corneal swelling. Hyperosmotics draw water out of the cornea and thus reduce corneal swelling. Most OTC hyperosmotics contain sodium chloride in various concentrations as either a solution or an ointment. The 2% solution tends to cause less stinging and burning than the 5% solution. An example of a hyperosmotic for corneal swelling is Adsorbonac.
      5. Scrubs: Eyelid scrubs are useful for removing oils, debris, or loose skin that can be associated with eyelid inflammation. Soap agents provide the foaming action. An example of this type of product is Eye-Scrub.
      6. Decongestants: Decongestants are used to shrink swollen blood vessels in the congested (red) eye, for example, in conjunctivitis. Phenylephrine is the most common decongestant for this purpose. Patients at risk for angle-closure glaucoma should cautiously use phenylephrine because it can cause an attack of the disease. Rebound congestion, in which blood vessels become dilated even with continued use of decongestants, is a common side effect of phenylephrine. Therefore, if no improvement in redness or symptoms occurs within 72 hours of use, phenylephrine should be discontinued. A frequent side effect of phenylephrine is dilation of the pupils. If phenylephrine is absorbed from the eye into the body, an increase in blood pressure may occur, although this is rare. Nevertheless, patients with high blood pressure should be cautious in using phenylephrine. Additionally, if phenylephrine is absorbed, side effects may occur due to interactions with atropine, tricyclic antidepressants (imipramine) and monoamine oxidase inhibitors such as phenelzine sulfate (Nardil) or tranylcypromine sulfate (Parnate), reserpine (Hydropres), guanethidine (Ismelin), or methyldopa (Aldomet).

        A second group of chemical decongestants are the imidazoles (naphazoline, tetrahydrozoline, and oxymetazoline). Imidazoles are longer acting than phenylephrine and have fewer side effects, including rebound congestion. Caution still is recommended with imidazoles because of the potential for an increase in blood pressure. Of the three imidazoles, oxymetazoline generally appears to exhibit the least side effects. Naphazoline may dilate pupils more in people with lightly pigmented (blue or green) eyes.

        Examples of eye drops containing decongestants are Naphcon, Prefrin, and Opcon A.

      7. Antihistamines: Ocular antihistamines are available OTC. These antihistamines are combined with ocular decongestants for the treatment of congestion (conjunctivitis), particularly when caused by allergy. Pheniramine maleate and antazoline both block histamine receptors in the eye, and thus provide relief from the symptoms of itchy, watery eyes. Antazoline may increase pressure slightly in the eye (of concern to patients with glaucoma) whereas pheniramine maleate has little effect on pressure. Common side effects of antihistamines include burning, stinging, and discomfort in the eye. Important side effects that may be associated with oral antihistamines have not been reported with ocular antihistamines. Antihistamines should not be used in patients at risk for developing angle-closure glaucoma. Examples of products that combine an antihistamine and decongestant are Naphcon A and Ocuhist.
      8. Newer allergy eye-drop preparations: Recently, new classes of eye drops for the treatment of itching due to allergy have become available over the counter. Zaditor, a nonsteroidal antiinflammatory drop, is an example of these.