As we welcome longer days and outdoor adventures this summer, it’s the perfect time to spotlight an often-overlooked part of sun safety: your eyes. June is UV Safety Awareness Month, and while many of us reach for sunscreen to protect our skin, our eyes also need defense from the sun’s harmful ultraviolet (UV) rays.
Unprotected sun exposure can lead to serious, long-term damage to your vision — including cataracts, macular degeneration, and growths on the eye like pterygium. Fortunately, with the right knowledge and eyewear, you can shield your eyes from UV damage and maintain healthy vision for years to come.
Let’s break down the risks, the facts, and what your ophthalmologist wants you to know.
How UV Rays Harm the Eyes
There are two main types of ultraviolet rays that impact eye health: UVA and UVB. Both can cause lasting damage to various parts of the eye:
1. Cataracts
UVB rays in particular contribute to the formation of cataracts — a clouding of the eye’s natural lens that impairs vision. According to the World Health Organization, up to 20% of cataract cases are caused by UV exposure, making protection a crucial part of prevention.
2. Macular Degeneration
UVA rays penetrate deeper into the eye and may contribute to damage in the macula — the central part of the retina responsible for sharp, central vision. Over time, this damage can increase the risk of age-related macular degeneration (AMD), a leading cause of vision loss in adults over 50.
3. Pterygium (Surfer’s Eye)
A pterygium is a noncancerous growth of the conjunctiva (the clear tissue over the white part of your eye) that can extend onto the cornea. It’s often seen in people who spend a lot of time outdoors without adequate eye protection. While often benign, it can cause irritation, redness, and even affect vision if it grows large enough.
UVA vs. UVB: What to Look for in Sunglasses
When selecting sunglasses, it’s critical to understand UVA and UVB protection. Here’s how they differ:
- UVA rays: Longer wavelength, penetrate deeper into the eye, contributing to macular degeneration and other retinal damage.
- UVB rays: Shorter wavelength, primarily affect the cornea and lens, playing a larger role in cataract formation and photokeratitis (sunburn of the eye).
Look for sunglasses that block 100% of both UVA and UVB rays. The label may read:
- “100% UV protection”
- “UV400” (which blocks all light rays with wavelengths up to 400 nanometers — covering both UVA and UVB)
Don’t be fooled by darker lenses — tint does not equate to UV protection. Always check the label.
Choosing Protective Eyewear for Kids
Children’s eyes are even more vulnerable to UV rays than adults’, as their lens and cornea are clearer, allowing more UV to reach the retina. This makes early protection essential.
Tips for choosing sunglasses for kids:
- Choose 100% UVA/UVB protection
- Opt for impact-resistant polycarbonate lenses
- Make sure the frames fit snugly and wrap around the sides of the eyes
- Use a wide-brimmed hat for extra shade
- Encourage regular use by letting kids help pick fun frames they enjoy wearing
Remember: 80% of UV exposure occurs before age 18, so early eye protection is key to lifelong eye health.
Polarized vs. Photochromic Lenses: What’s the Difference?
Both polarized and photochromic lenses offer benefits — but they’re not the same.
Polarized Lenses:
- Reduce glare from reflective surfaces (like water, sand, or pavement)
- Improve visual clarity and comfort
- Do not automatically mean UV protection — check labels to ensure they also block UVA/UVB
Great for: driving, boating, fishing, or any outdoor activity with bright reflections
Photochromic Lenses:
- Automatically darken in sunlight and return to clear indoors
- Offer consistent UV protection
- Eliminate the need to switch between glasses and sunglasses
Great for: people who prefer all-in-one glasses for daily wear
Pro tip: You can get photochromic lenses with polarization — a great option for people who want the benefits of both.
Ophthalmologists Can Spot UV Damage Early
Many UV-related eye conditions develop gradually and may go unnoticed in the early stages. During a comprehensive eye exam, an ophthalmologist can detect:
- Signs of cataract formation
- Retinal changes linked to macular degeneration
- Corneal abnormalities or growths like pinguecula or pterygium
Annual eye exams, especially during the summer, are a smart way to stay ahead of sun-related eye damage. Your ophthalmologist can also help you choose the right lenses based on your lifestyle and exposure.
Final Tips for Summer Eye Protection
- 🕶 Always wear sunglasses with 100% UVA/UVB protection — even on cloudy days
- 👒 Pair sunglasses with a wide-brimmed hat
- 💦 Avoid UV damage from water reflection by protecting your eyes near pools and lakes
- 🧒 Make sun safety a family habit, especially for kids and teens
- 👁 Book regular eye exams to detect issues early
Need Help Choosing the Right Eyewear?
At North Fulton Eye Center, we’re committed to protecting your vision through all seasons. Whether you need help selecting proper UV-protective lenses or it’s time for your annual exam, our experienced team is here for you.