turquoise--This info from the U.S. Environmental Protection Agency suggests that the eyes should be protected from UV rays. The only way to protect one's eyes while in the sun would be to wear sunglasses which are UV rated. Similar warnings appear on many many other reputable Web sites.
I think the best way to protect your skin is to use a sun screen/sun block product and limit exposure to the sun--and not to toss away the sunglasses.
This is from the EPA Web site:
Health Effects of Overexposure to the Sun
Since the appearance of an "ozone hole" over the Antarctic in the early 1980s, Americans have become aware of the health threats posed by ozone depletion, which decreases our atmosphere's natural protection from the sun's harmful ultra-violet (UV) rays. This fact sheet provides a quick overview of the major health problems linked to overexposure to UV radiation:
-- Skin Cancer (melanoma and nonmelanoma)
-- Premature aging of the skin and other skin problems
-- Cataracts and other eye damage
-- Immune system suppression
Understanding these risks and taking a few sensible precautions will help you to enjoy the sun while lowering your chances of sun-related health problems later in life.
Skin Cancer
The incidence of skin cancer in the United States has reached epidemic propor-tions. One in five Americans will develop skin cancer in their lifetime, and one American dies every hour from this devastating disease. Medical research is help-ing us understand the causes and effects of skin cancer. Many health and educa-tion groups are working to reduce the incidence of this disease, of which one million cases have been predicted for 1999 alone.
Melanoma
Melanoma, the most serious form of skin cancer, is also one of the fastest growing types of cancer in the United States. Many dermatologists believe there may be a link between childhood sunburns and melanoma later in life. Melanoma cases in this country have more than doubled in the past 2 decades, and the rise is expect-ed to continue
.
Nonmelanoma Skin Cancers
Nonmelanoma skin cancers are less deadly than melanomas. Nevertheless, left untreated, they can spread, causing disfigurement and more serious health prob-lems. More than 960,000 Americans will develop nonmelanoma skin cancer in 1999, while more than 2,000 will die from the disease. There are two primary types of nonmelanoma skin cancers. These two cancers have a cure rate as high as 95 percent if detected and treated early. The key is to watch for signs and seek medical treatment.
Basal Cell Carcinomas are the most common type of skin cancer tumors. They usually appear as small, fleshy bumps or nodules on the head and neck, but can occur on other skin areas. Basal cell carcinoma grows slowly, and rarely spreads to other parts of the body. It can, how-ever, penetrate to the bone and cause considerable damage.
Squamous Cell Carcinomas are tumors that may appear as nodules or as red, scaly patches. This cancer can develop into large masses, and unlike basal cell carcinoma, it can spread to other parts of the body.
Other Skin Damage
Other UV-related skin disorders include actinic keratoses and premature aging of the skin. Actinic keratoses are skin growths that occur on body areas exposed to the sun. The face, hands, forearms, and the "V" of the neck are especially susceptible to this type of lesion. Although premalignant, actinic keratoses are a risk factor for squamous cell carcinoma. Look for raised, reddish, rough-tex-tured growths and seek prompt medical attention if you discover them. Chronic exposure to the sun also causes premature aging, which over time can make the skin become thick, wrinkled, and leathery. Since it occurs gradually, often mani-festing itself many years after the majority of a person's sun exposure, premature aging is often regarded as an unavoidable, normal part of growing older. With proper protection from UV radiation, however, most premature aging of the skin can be avoided.
Cataracts and Other Eye Damage
Cataracts are a form of eye damage in which a loss of transparency in the lens of the eye clouds vision. If left untreated, cataracts can lead to blindness. Research has shown that UV radiation increases the likelihood of certain cataracts. Although curable with modern eye surgery, cataracts diminish the eyesight of millions of Americans and cost billions of dollars in medical care each year. Other kinds of eye damage include pterygium (i.e., tissue growth that can block vision), skin cancer around the eyes, and degeneration of the macula (i.e., the part of the retina where visual perception is most acute). All of these problems can be lessened with proper eye protection from UV radiation.
Immune Suppression
Scientists have found that overexposure to UV radiation may suppress proper functioning of the body's immune system and the skin's natural defenses. All people, regardless of skin color, might be vulnerable to effects including impaired response to immunizations, increased sensitivity to sunlight, and reac-tions to certain medications.
EPA's SunWise School Program
In response to the serious public health threat posed by overexpo-sure to UV radiation, the U.S. Environmental Protection Agency (EPA) is working with schools and communities across the nation through the SunWise School Program. SunWise aims to teach children in elementary school and their caregivers how to protect themselves from overexposure to the sun.
For More Information
To learn more about how to protect yourself from overexposure to the sun's UV rays, refer to EPA's fact sheet about action steps for sun protection (EPA430-F-99- 026). For more information, call EPA's Stratospheric Ozone Information Hotline at 800 296-1996.
Written by EPA's Stratospheric Protection Division
Last updated on April 11, 2000 http://www.epa.gov/ozone/uvindex/uvhealth.html
Here you can find very similar information from an Australian Web site:
Skincancer Research Foundation (SA): Protection
Address:http://skincancer.cool.net.au/protection/
These are the EPA's suggestions for protecting yourself in the sun:
Action Steps for Sun Protection
While some exposure to sunlight can be enjoyable, too much can be dangerous. Overexposure to ultraviolet (UV) radiation in sunlight can result in a painful sunburn. It can also lead to more serious health effects, including skin cancer, premature aging of the skin, and other skin disorders; cataracts and other eye damage; and immune system suppression. Children are particularly at risk of overexposure, since most of the average person's lifetime exposure occurs before the age of 18.
Be Sun Wise
Most people are not aware that skin cancer, while largely preventable, is the most common form of cancer in the United States, with more than one million cases reported annually. By following a number of simple steps, you can still enjoy your time in the sun while protecting yourself from overexposure. In cooperation with a number of leading public health organizations, the U.S. Environmental Protection Agency (EPA) is providing these action steps to help you and your family be "SunWise." Other than staying indoors, no single step can fully protect from overexposure to UV radiation, so use as many of the fol-lowing actions as possible.
Limit Time in the Midday Sun
The sun's rays are strongest between 10 a.m. and 4 p.m. Whenever possible, limit exposure to the sun during these hours.
Seek Shade
Staying under cover is one of the best ways to protect your-self from the sun. Remember the shadow rule: "Watch Your Shadow—No Shadow, Seek Shade!"
Always Use Sunscreen
A broad spectrum sunscreen with a Sun Protection Factor (SPF) of at least 15 blocks most UV radiation. Apply sun-screen liberally on exposed skin and reapply every 2 hours when working or playing outdoors. Even waterproof sun-screen can come off when you towel off sweat or water.
Wear a Hat
A hat with a wide brim offers good sun protection to your eyes, ears, face, and the back of your neck - areas particularly prone to overexposure to the sun.
Cover Up
Wearing tightly woven, loose-fitting, and full-length clothing is a good way to protect your skin from the sun's UV rays.
Wear Sunglasses that Block 99-100% of UV Radiation
Sunglasses that provide 99-100% UVA and UVB protection will greatly reduce sun exposure that can lead to cataracts and other eye damage. Check the label when buying sunglasses.
Avoid Sunlamps and Tanning Parlors
The light source from sunbeds and sunlamps damages the skin and unprotected eyes. It's a good idea to avoid artificial sources of UV light.
Watch for the UV Index
The UV Index provides important information to help you plan your outdoor activities in ways that prevent overexposure to the sun. Developed by the National Weather Service (NWS) and EPA, the UV Index is issued daily in selected cities across the United States.
Special Considerations for Children
Although many of the sun's effects do not appear until later in life, recent med-ical research shows that it is very important to protect children and young adults from overexposure to UV radiation. Because children tend to spend more time in the sun than adults, be careful to keep young children protected from overex-posure, and consult your physician about sun protection for children under 6 months of age.
For More Information
To learn more about UV radiation, the action steps for sun protection, and the SunWise School Program, call EPA's Stratospheric Ozone Information Hotline at 800 296-1996.
Written by EPA's Stratospheric Protection Division
Last updated on April 11, 2000 http://www.epa.gov/ozone/uvindex/uvaction.html
[ 04-26-2001: Message edited by: chelseabelle ]