Most people know that exposure to the sun’s ultraviolet (UV) rays can cause skin cancer, sunburn, and premature aging.

However, many people overlook the fact that the skin around the eyes is particularly vulnerable to sun damage because it is thin and delicate. In fact, the eyelids are one of the most common sites for skin cancer, and skin cancers that occur on the eyelids can be especially dangerous because they can spread quickly to surrounding tissue.

The risks of sun exposure to the eyelids

Here are some of the ways that unprotected sun exposure can damage your eyelids:.

1. Skin cancer

As mentioned, skin cancer is one of the most serious risks associated with sun exposure on the eyelids. The two most common types of skin cancer that occur on the eyelids are basal cell carcinoma and squamous cell carcinoma.

Both of these cancers can spread quickly if left untreated. In addition, melanoma, the deadliest form of skin cancer, can also occur on the eyelids. People with fair skin, blue or green eyes, and a history of sunburn or skin cancer are at the highest risk for developing skin cancer on the eyelids.

2. Premature aging

Excessive sun exposure can cause wrinkles, age spots, and loss of elasticity in the skin, including the delicate skin around the eyes. This can make the eyelids look saggy, crepey, and older than they actually are.

3. Cataracts

Prolonged sun exposure can increase the risk of developing cataracts, a clouding of the eye’s lens that can cause blurred vision and eventually blindness.

Studies have shown that people who spend a lot of time outdoors without protective eyewear are more likely to develop cataracts than those who protect their eyes from the sun.

4. Pterygium

A pterygium is a growth of tissue on the surface of the eye that can cause irritation, redness, and blurred vision. Although the exact cause of pterygia is not known, sun exposure is thought to be a major risk factor.

How to protect your eyelids from the sun

Here are some tips for keeping your eyelids safe from sun damage:.

1. Wear sunglasses

Choose sunglasses that block out 99% to 100% of both UVA and UVB radiation. Look for wraparound styles that provide full coverage of the eyes, and wear a brimmed hat for added protection.

2. Use sunscreen

Apply sunscreen with at least SPF 30 to your face, including your eyelids. Be careful not to get any sunscreen in your eyes, as it can cause irritation.