Categories
Weight Loss Exercise

Taking care of Contact Lenses

Taking care of Contact Lenses is critical to protect your sight. Yesterday I switched back to contact lenses from glasses. I have worn contacts off and on for the last 25 years or so and over the last three years I have almost exclusively worn contact lenses. I rememver the last time that I got contact lenses the eye doctor asked me how long I wore my contact lenses and I replied “about 12 hours a day”, he was shocked and asked me what I had against my eyes to treat them so badly. I am sure that I will be better this time around.

Taking care of Contact Lenses

Taking care of Contact Lenses

More than 30 million Americans use contact lenses, according to the Contact Lens Council. In addition to offering flexibility, convenience, and a “no-glasses” appearance, “contacts” help correct a variety of vision disorders, including nearsightedness, farsightedness, astigmatism, and poor focusing with reading material.

But contact lenses also present potential risks. “Because they are worn directly on the eye, they can lead to conditions such as eye infections and corneal ulcers,” says James Saviola, Branch Chief for FDA’s Division of Ophthalmic and Ear, Nose and Throat Devices. “These conditions can develop very quickly and can be very serious. In rare cases, they can lead to blindness.”

Best strategies for contact lens safety involve maintenance, cleanliness, and learning as much about it as you can.

Tips for Buying Contact Lenses

With a valid prescription, it is possible to purchase contact lenses from stores, the Internet, over the phone or by mail. But be extremely cautious when buying contacts from someone other than your eye care professional.

Contact lenses are NOT over-the-counter devices. Companies that sell them as such are misbranding the device and violating FTC regulations by selling you contact lenses without having your prescription.

Avoiding Contact Lense problems

  • Make sure your prescription is current. Don’t order with an expired prescription, and don’t stock up on lenses right before the prescription is about to expire. If you haven’t had your eyes checked within the last year or two, you may have eye problems that you are not aware of, or your lenses may not correct your vision well.
  • Order from a supplier that you are familiar with and know is reliable.
  • Beware of attempts to substitute a different brand than you presently have. There are differences in the water content and shape among the brands. The correct choice of which lens is right for you should be based only on an examination by your eye care professional.
  • Request the manufacturer’s written patient information for your contact lenses. It will give you important risk/benefit information and instructions for use.
  • Make sure that you get the exact brand, lens name, power, sphere, cylinder (if any), axis (if any), diameter, base curve, and peripheral curves (if any) noted on the prescription. If you think you’ve received an incorrect lens, check with your eye care professional. Don’t accept a substitution unless your eye care professional approves it.

Taking care of Contact Lenses

Contact lens users run the risk of infections such as pink eye (conjunctivitis), corneal abrasions, and eye irritation. A common result of eye infection is corneal ulcers, which are open sores in the outer layer of the cornea. Many of these complications can be avoided through everyday care of the eye and contact-lenses.

To reduce your chances of infection

  • Replace your contact lens storage case every 3-6 months.
  • Clean and disinfect your lenses properly.
  • Never transfer contact lens solutions into smaller travel size containers. This can affect sterility and may also leave you open to accidentally applying a harmful liquid to your eyes.
  • Avoid non-sterile water. Distilled water and tap water are not sterile and should not be used.
  • Never use homemade saline solution, as tap and distilled water are not sterile.
  • Never put your lenses in your mouth; saliva is not sterile.
  • Always use fresh contact lens solution. Never reuse the lens solution.
  • Remove your contact lenses before swimming.

Don’t wear your contact lenses overnight. This in itself will protect your eyes and helps in taking care of contact lenses. This is a real chance for infection and has to be avoided. This is because contact lenses stress the cornea by reducing the amount of oxygen to the eye. They can also cause microscopic damage to the surface of the cornea, making it more susceptible to infection.

Never ignore symptoms of eye irritation or infection that may be associated with wearing contact lenses. The symptoms include discomfort, excess tearing or other discharge, unusual sensitivity to light, itching, burning, gritty feelings, unusual redness, blurred vision, swelling and pain.

If you experience any contact lense infection symptoms

Remove your lenses immediately and keep them off.
Keep the lenses. They may help your eye care professional determine the cause of your symptoms.
Get in touch with your eye care professional immediately.

Let me know if you have any more tips for all of us. Taking care of contact lenses and your eyes is a very good idea.

Categories
Weight Loss Products

Science or Snake Oil: is Garcinia cambogia the magic weight-loss pill it’s hyped up to be?

The burgeoning field of complementary medicines, including weight-loss products, is now a billion-dollar industry. Every year, more people are spending disposable income on complementary and alternative medicines that may prove to have no benefit for our health.

Garcinia Cambogia is one such example. Marketed as a weight-loss pill, it has had an exponential rise in sales since it was featured on the Doctor Oz show.

Garcinia cambogia is the former scientific name of a native Southeast Asian plant, belonging to the family Clusiaceae, that bears a pumpkin-shaped fruit. The skin of the fruit contains the active ingredient, hydroxycitric acid (HCA). HCA inhibits an enzyme that produces fatty acid, thus suppressing fatty acid and the processing of cholesterol.

But does this mode of action translate to the weight-loss claims associated with it? Or is it just clever marketing convincing us this product helps us lose weight?

An Australian advertisement for the weight-loss supplement Garcinia Cambogia.
Screenshot, http://www.garciniacambogiasave.com/, CC BY

Double-blinded, randomised controlled trials are the gold standard of clinical study and whenever possible should be conducted to test the effectiveness of a treatment compared to a placebo. Weight-loss products should be assessed for a minimum of six months, with a further six-month follow-up period (12 months total).

There has never been a long-term study investigating the efficacy of Garcinia Cambogia. Most of the studies have been conducted in animals.

In fact, the majority of well-designed trials investigating the effect of this product on weight loss have found no effect that is of clinical relevance. In a 12-week double-blind, placebo-controlled trial conducted in humans, people receiving 3000mg of Garcinia Cambogia extract (1500mg of the active component HCA) per day lost the same amount of weight as the control group.

Another 12-week study with a four-week follow-up (16 weeks total) also found no greater weight-loss effect than for a placebo control group. For those studies where a statistically significant effect was reported, the weight loss was around one kilogram more than for those receiving a placebo pill.

Positive and greater weight losses were found in some studies, but this effect is suppressed when looking at all of the studies combined.

The Garcinia Cambogia plant.
Livia Lacolare/Flickr, CC BY

With respect to other health benefits from taking this supplement, the evidence to suggest it can improve blood cholesterol levels is lacking.

Most importantly, the product safety profile of Garcinia Cambogia has been adequately tested and there appear to be no issues.

Some complementary medicines have been found to contribute to improved health outcomes, through increased efficacy and cost-effectiveness. However, if there is to be a role for such complementary and alternative weight-loss products and medicines, we must build upon the evidence to investigate whether these increasingly popular products are a viable treatment option.

A recent Obesity Australia and Price Waterhouse Coopers report found obesity cost Australia A$8.6 billion in 2011-2012, with the indirect costs far higher. We must establish whether complementary medicines have a role to play in preventing and treating obesity. If we take no action to reduce obesity rates, an additional 2.4 million people will become obese at a cost of $87.7 billion over 10 years.


Please visit this website if you’re interested in taking part in our clinical weight-loss trials on Garcinia Cambogia and other weight-loss supplements.

Categories
Weight Loss Exercise

If you are thin are you healthier?

Laura over at Starling Fitness (I link to her blog a lot, it is a really great one) has an article based on some research asking the question of

“Is thinner healthier?”

As she says it is not and I have to agree. All of these commercials that we see showing skinny happy people are a bit deceptive because being thin does not make you healthy by itself. Some people are just genetically thinner and if they do not take care of themselves they will be unhealthy like anyone else.

The thing that we are all striving for here is to increase our level of fitness. We get in shape, we eat good food and we get fitter. Some people have more trouble losing the fat but at the same time they are still increasing their level of fitness. We all know other people that sit on the couch and do nothing, eat whatever they want and are very unhealthy and slim. That is just the way the genetics go.

Media is so persuasive in the way that it makes us look at situations. Whether it was the Bud Girls in the TV commercials, the happy thin Alli talking girls on TV now or just all of the media messages that want us to see their product being used by everyone and everyone is happy and thin.