Showing posts with label allergies. Show all posts
Showing posts with label allergies. Show all posts

Monday, June 13, 2011

Do Cucumbers Cure Dark Circles?

Numerous times in my life, mostly in my teens, I had people approach me and ask me if I had been in a fight or punched in the face for some reason. Most of the time, the answer was no. At first I wondered why people kept asking me this question? I soon realized that, unfortunately for me, I was predisposed to developing "bags" and "dark circles" under my eyes.

I always wondered why. The answer I was given most often was that I wasn't sleeping enough. But, honestly, as a teen I was getting 8-10 hours of sleep every weeknight and probably closer to 14 on weekends (yes, I was a lazy kid). So, then the answer changed to "you're sleeping too much". I would like to take a moment here to thank everyone in the past who supplied me with this invaluable information.

So why do we get dark circles and bags under our eyes??

First, lets talk a little anatomy!
The skin covering our eyelids is very thin. In fact, its the thinnest of any part of the body. This makes the skin more translucent (somewhat see through). Immediately underneath this thin skin is a dense network of small blood vessels which can dilate and become leaky just like all other blood vessels in the body.

Genetics
Unfortunately, this is the most likely answer for the majority of people. Thin skin plus superficial blood vessels equals dark circles. Simple equation. Its usually more pronounced in fair skin individuals but can also be noticeable in dark skin as well.

Allergies
People who suffer from allergies often have puffy eyes. This is because allergies cause blood vessels to dilate and become leaky. Dilation of the vessels adds to the colour and the leaking makes the eyelids swell.

Rubbing Your Eyes
I wrote a blog on this a while back explaining why its bad. In this case, rubbing can cause the little blood vessles to break. This results in darkening and swelling. Also, in allergies, rubbing can release more of the histamines that cause the allergic response in the first place.

Sleep and Stress
Less sleep and more stress. Bad for you in so many ways.

Age
As we age, our skin loses elasticity and slowly begins to sag. This exaggerates the look of bags under the eyes.

What's the Treatment?? 

There are so many creams, ointments, and roller-thingys on the market that claim to reverse the appearance of dark circles. What I have always wondered is, if these creams, ointments, and roller-thingys all worked so well, then why is there a new product coming out every other day??
Applying Cold
What do we do when we sprain an ankle? How about for a bump on the head? One of the first things we reach for anytime there's swelling is an ice pack. The cold helps decrease swelling by decreasing inflammation and reducing blood flow to the affected area. The same simple therapy can be applied to our eyelids.

Cucumbers
As far as I can tell, there's no scientific reason for cucumbers to be the miracle cure. I've read in places that they contain some nutrients that help lighten skin, but as we have already established, the skin is not usually the problem. The only thing I can think of is that cucumbers are cool (in temperature, not social status) and as we discussed, applying something cold can reduce swelling.
Cold Tea Bags
Its possible that the caffeine in tea can help constrict the blood vessels below the skin's surface. And again, the cooling effect would be helpful.

Make-Up
My favourite solution.

Laser Treatment
This is generally reserved for people who have skin pigmentation problems.

I worked with an Oculo-Plastics surgeon for a little while during one of my clinical externships. I asked him if there was anything he could do for dark circles around the eyes. His advice: "Cover your eyes and tan the rest of your face".

If you are ever worried about the skin on or around your eyelids, please see your eye doctor or dermatologist.

Wednesday, December 1, 2010

Visine

Picture this: You're eyes are a little irritated, possibly even a little red. You're not sure why this is happening, but you figure an eye drop could help. You walk into the eye drops section in the pharmacy and you're bombarded by about 131,239 different types of eye drops that tell you they do all sorts of wonderful things. So you pick the one with the name you've heard and claims to do what you want... Visine.
Sometimes it works, sometimes it doesn't. But you give it a try nonetheless.

So, is Visine bad for your eyes and why?

1) The active ingredient in the original Visine is Tetrahydrozaline Hydrochloride. It works by constricting blood vessels. Over time, the blood vessels will stop responding to it and even have a rebound effect, where they get more dilated and red than before.
2) The preservative used in all Visine drops is Benzalkonium Cholride (aka BAK). It has been shown to be one of the most likely to cause ocular toxicity and irritation. Most pharmaceutical companies don't BAK in their medicated eye drops for this reason.



If you insist on using Visine for dry eyes, consider using the preservative-free formula.

FAQ:
Q:
Can I use Visine to get rid of Pink Eye?
A: No. Pink eye is a viral infection of the eye and should be looked at by your doctor. He or she can then determine which drops (if any) are needed. Learn more about Pink Eye Here.
Q: What other drops should I use?
A: There are many options for dry eyes, allergies, contact lenses, and infections. Its best to ask your friendly neighborhood eye doctor what is best for your eyes.
Q: Is it true that a few drops of Visine in someone's drink can give them an upset stomach (like in Wedding Crashers)?
A: A few drops probably wouldn't do much. However, a lot would likely make a person very sick. Aside from vomit and/or diarrhea, it could affect a person's vision, heart rate, and body temperature. So, I would not recommend trying it :)


Tuesday, September 14, 2010

Why Rubbing Your Eyes is Bad for You

Everyone knows you're not supposed to. But why?

  • Short-term:
    • Rubbing your eyes when they're itchy or irritated can cause break down of the cells within the eyelids and on the surface of the eye ball. This releases more histamines which make the itchiness worse.
    • Also, rubbing can cause breakage of small blood vessels in the eyelids which can result in dark circles forming around your eyes
  • Long-term:
    • consistent long-term rubbing of the eyes, especially in kids, can potentially lead to a condition called keratoconus
      • Keratoconus is a condition where the front surface of the eye (the cornea) becomes thinner and thus loses its shape. This results in blurry vision for the patient, which cannot always be fully corrected with glasses or contact lenses.

Tuesday, August 3, 2010

Why Do My Eyes Itch?

Allergies

- most obvious answer, but not necessarily most common
- signs: swollen/puffy eyelids, watery eyes, bumps under eyelids (seen by your doctor), diffuse and more intense itch

Blepharitis (blepharo- = eyelids, -itis= inflammation)
- so, inflammation/irritation of eyelids, very common
- could be due to mild bacterial infection or blockage of glands at the base of eyelashes
- signs: redness along eyelid margin, itchiness usually concentrated at eyelid margin or at the corners of your eyes but not as intense as with allergies, also watery eyes

As always, your questions are welcomed and encouraged.