Sunglasses are critical for eye health, so it is essential to know what you are looking for when selecting a pair of UV-protecting sunglasses.
Sunglasses Are More Than a Fashion Statement
When it comes to sunglasses, often our priority is to find a pair of shades that complement our face. But if your sunglasses can’t protect your eyes and skin, they’re not fulfilling their purpose.
The reason we wear sunglasses is to reduce glare and protect our eyes from ultraviolet radiation from the sun.
Here, we’ve provided five reasons you should wear sunglasses 365 days per year.
UV Rays Can Damage Your Eyes and Skin During All Four Seasons
Everyone reaches for sunglasses on sunny days at the beach or the pool, but ultraviolet (UV) rays can penetrate through clouds and damage your vision.
UV light is higher-energy light than visible light, and it has a shorter wavelength. The sun provides natural UV light, but tanning beds, sun lamps, lasers and nail drying lamps can also give off UV light.
The three primary types of ultraviolet light are UVA, UVB and UVC. Most of the UV rays from the sun are UVA, but some are UVB. Overexposure to UV radiation can cause premature aging and disease.
Sunglasses Create a Barrier Between Your Eyes and the Elements
Being outside can expose your eyes to elements like dust, sand and wind. Wearing sunglasses can create a physical barrier between your eyes and the elements, keeping your eyes safe from debris.
Wind and frigid air can cause dry eyes, eye pain and sensitivity, so sunglasses can provide a protective shield in the winter.
Sunglasses Can Prevent Eye and Skin Cancer
A small amount of sun exposure is healthy because sunlight produces vitamin D, an essential vitamin in the body. The World Health Organization recommends between 5 to 30 minutes of unprotected sun exposure two to three times per week.
Overexposure to UV radiation can cause cellular damage. We can measure UV radiation using the UV index, a scale from low radiation (1-2) to high (over 11). Experts recommend sun protection when the UV index is 3 or higher.
Skin cancer is the most common cancer in the United States. The most fatal type of skin cancer is melanoma, and most cases develop from UV radiation.
Similar to skin, eyes can also suffer from sunburn. This is a condition called photokeratitis. Although photokeratitis is temporary, a burned cornea can cause soreness, inflammation and sensitivity to light.
Repetitive exposure to UV radiation can lead to skin cancer of the eye or eyelid. Surfer’s eye, or pterygium, is a fleshy growth that develops on the surface of the eye, and it sometimes requires surgery if it obstructs your vision.
A Quality Pair of Sunglasses Will Help Prevent Eye Disease
A cataract is clouding of the eye lens, and it is a natural part of the aging process. However, overexposure to UV rays can cause cataracts to develop more rapidly through a process called oxidation.
Cataracts are a leading cause of vision impairment and can cause symptoms such as blurry vision, double vision, glare or halos, difficulty seeing at night and sensitivity to light.
Ultraviolet light can also increase the risk for age-related macular degeneration, a condition that affects central vision. Research shows bright sunlight may worsen macular degeneration, but sunglasses can offer protection from UV damage.
Sunglasses Can Reduce Eye Strain
A particular type of lens called a polarized lens can significantly reduce eye strain from glare. Polarized lenses allow vertical light to pass through them, but they block horizontal light, which causes glare. Examples of horizontal light could be a shiny car hood or bright light reflecting off a lake.
Individuals who use polarized sunglasses often report reduced eye strain while engaging in outdoor activities, such as golfing, swimming, boating, fishing and skiing under the sun.
Tips on How to Choose Quality Sunglasses
The FDA publishes guidance for non-prescription sunglasses, and it includes helpful information about requirements. Here are tips based on the FDA recommendations:
- Learn to read labels, and only purchase sunglasses that have clear information about the protection they offer.
- Select a pair of sunglasses that offer 100 percent UVA and UVB protection. Look for sunglasses that say “UV400,” meaning they block almost all ultraviolet radiation.
- Some sunglasses use the term EPF or “eye protection factor,” which evaluates how effectively the sunglasses block UV rays. Choose sunglasses that have an EPF of at least 9 or 10.
- Typically, sunglasses with light to medium tints are suitable for driving and outdoor pursuits, whereas darker shades are ideal for the beach or skiing. Read the label carefully to determine the amount of protection the sunglasses offer.
- Sunglasses offer more protection if they wrap around your face and fit close to the eyes. A close fit and wraparound style create a physical barrier to keep out UV rays.
- Polarized lenses can reduce glare and enhance comfort, but they don’t filter out UV rays. Look for the EPF or UV label to determine the safety of the lens.
- The FDA mandates that sunglasses must have impact resistance; however, they are not shatterproof, so you must not rely on them as protective eyewear.
If you need protective eyewear for sports or industrial use, purchase safety glasses or goggles with plastic polycarbonate lenses. Polycarbonate lenses without coatings are prone to scratches, so opt for those with scratch-resistant features.
Visit Your Ophthalmologist for a Comprehensive Eye Exam
Comprehensive eye exams with dilation provide accurate information about your vision and eye health. Before the exam, your ophthalmologist or optometrist may ask you about your medical conditions, eye conditions and family history. The exam includes many components like checking for refractive errors, focusing problems and eye diseases like cataracts, glaucoma, diabetic retinopathy and age-related macular degeneration.
After your eye exam, you will have an updated prescription as well as a glimpse of your overall health. Often, eye problems can detect issues like hypertension, high cholesterol or diabetes, which makes your eye exam an important part of preventive health care.
Call today to make an appointment for a comprehensive eye exam for you and your family. Your vision is a precious gift, and you can take active steps to protect it by visiting your eye doctor.

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