Showing posts with label dry-eye symptoms. Show all posts
Showing posts with label dry-eye symptoms. Show all posts

Tuesday, February 19, 2013

Choosing a Pair of Killer Sunglasses

It is easier to select a pair of sunglasses you love if you give a thought to the possible choices before visiting a shop. The three things that you should consider are comfort, protection, and style.

Sunglass lens tints

The first thing that you look for as soon as you come across a nice pair of glasses Oakville is probably the color of the lens. Colors are usually applied to the lenses of sunglasses so that they absorb light as it flows through them. The color chosen by you is a matter of your personal taste. You need to consider some important benefits related to color:
  • Gray colored-lens lowers the brightness, but will not distort the color.
  • Amber and brown tints bring down glare that is created by the sunlight's blue frequency which makes things appear hazy. These tints distort colors more than the gray tints.
  • Yellow colored-tints bring down the haze coming from blue light better than brown colored-lenses. The view is really sharpened, but there is more distortion of color.
  • Lenses that are tinted green help in filtering out some amount of blue light and reduce the glare. These lenses provide better contrast between the objects.
  • Lenses of rose color can be a good option if you are involved in water sports or different outdoor activities, as they provide nice contrast on objects seen against the background of green or blue colors.
Sunglasses with polarized lenses

If the lens has a polarized film, it brings down the glare that occurs when the light bounces off on objects like highways, water, and similar surfaces.

Sunglasses with scratch-resistant lenses

These glasses come with a thin layer of coating that is applied to lenses to make them resistant to scratches. Remember that plastic lenses tend to scratch more easily than hard glass lenses.

Sunglasses with photo-chromatic lenses

Photo-chromic (or photo-chromatic) lenses turn darker when exposed to UV radiation. The shift quickly happens as your surroundings turn from bright to dim. These are preferred by people who want their glasses to be used as regular ones and as sunglasses.

Choose sunglasses that suit your style

You find different styles in sunglasses every year. The selections these days are so different from each other that not a single pair will ever go out of fashion. You don't have to spend a lot on these glasses to maintain a good collection, as you find effective ones based on your budget.

Specialty and designer sunglasses such as the ones for sports are priced higher than most sunglasses today, but it is easy to find all types of fashion glasses at affordable rates. Make sure you carefully watch the UV ratings. Unless you know already which frame suits you the best, go shopping for glasses Oakville and try on as many frames as possible.

About the author
Grace is an enthusiastic blogger and likes to write about healthcare. To get world class designer oakville glasses contact an expert optician at Next Optical Store.

Sunday, April 8, 2012

Treatments for Dry-Eye

1. Artificial Tears
Best for: Everyday burning or stinging brought on by too much computer use, say, or a late night.

How they work: Made of ingredients such as glycerin and natural oils, these over-the-counter drops can temporarily restore moisture to the eyes, says ophthalmologist Robert Latkany, the director of the Dry Eye Clinic at the New York Eye and Ear Infirmary, in New York City.

How to use them: Put a drop or two in each eye when you feel discomfort. However, if you need to use them more often than four times a day, see your eye doctor. He may suggest that you switch to preservative-free drops, which are better for more frequent use. If you're a contact-lens wearer, look for drops labeled "re-wetting drops." That means they're safe for contacts.

2. Omega-3s
Best for: People who don't like drops.

How they work: Omega-3 fatty acids may help reduce inflammation that can contribute to dry-eye syndrome (DES), a common condition that's easily diagnosed by an eye doctor. A 2005 study published in the American Journal of Clinical Nutrition, led by investigators at Harvard Medical School, found that women who consumed the highest levels of omega-3's in their diet had a 34 percent lower risk for DES than did others. And a 2010 study at the University of Texas Southwestern Medical Center at Dallas showed that people who took a daily omega-3 fish-oil supplement that contained 450 milligrams of the fatty acid EPA and 300 milligrams of DHA, plus 1,000 milligrams of flaxseed oil, produced more tears.

How to use them: Add a few servings of fatty fish, such as salmon, to your weekly diet, or talk to your doctor about taking daily fish-oil and flaxseed supplements. Take omega-3 supplements with food, as they can cause stomach upset.

3. Prescription Drops
Best for: Treating chronic DES.

How they work: Sold under the brand name Restasis, prescription drops contain the drug cyclosporine, which can help increase natural tear production. In a 2010 study published in the Korean Journal of Ophthalmology, a majority of patients reported few dry-eye symptoms or none at all after using the drops for three months.

How to use them: Apply one drop per eye twice a day. Experts note that these drops can be used indefinitely, as long as you're under the care of an eye doctor.

4. Warm Compresses
Best for: Dryness that drops can't seem to tackle.

How they work: Tears, your eyes' own lubrication, are made up of water and an oily substance produced by glands along the eyelids. "If cells in the glands harden and plug the opening, it can keep the oil from getting into the tear film," says Stephen Pflugfelder, an ophthalmologist in Houston. "Without that oil, the water in tears evaporates too quickly, leaving eyes feeling dry." A warm compress helps liquefy plugs so the oil can flow into tears.

How to use them: Place a warm, wet washcloth over your eyelids for up to 10 minutes once a day as needed.

5. Eyelid Washes
Best for: Dry eyes that are accompanied by flaking along the lids, which could be a sign of blepharitis, a dandrufflike inflammation of the eyelash follicles.

How they work: "People with blepharitis tend to overproduce oil, which can block the glands and cause tears to evaporate too rapidly," says Christopher Gelston, an assistant professor of ophthalmology at the University of Colorado School of Medicine, in Aurora. An over-the-counter eye wash contains mild cleansing agents to dissolve oil and remove flakes (as well as irritants and allergens that can exacerbate the problem).

How to use them: Rinse or massage over the lash line once a day, typically at night (some washes come with a cup for application). If your symptoms don't clear up after several days, see your doctor.

6. Ophthalmic Inserts
Best for: Relieving dryness that doesn't respond to other remedies.

How they work: Available only by prescription, Lacrisert inserts are tiny cellulose beads that you place in the pocket of each lower eyelid. "They dissolve slowly and mix with your tears to provide ongoing lubrication throughout the day," says Pflugfelder.

How to use them: Insert a bead once or twice a day. Like prescription drops, inserts are safe for long-term use, as directed by your doctor.

By: Amanda Pressner