Spending time outdoors puts you at risk of UV radiation-related eye conditions. However, your actual UV radiation dose depends on several factors.
Geographic area – If you’re in a tropical region close to the Earth’s equator, you’ll receive an increased amount of UV exposure. As you get farther away from the equator, your risk decreases.
Altitude above the Earth – You’ll receive greater UV exposure at higher altitudes.
Specific setting – In expansive open spaces, you’ll receive greater UV exposure. This exposure is especially likely when you’re in proximity to sand, snow and other reflective surfaces. To illustrate, UV rays reflected off the snow can almost double your exposure.
Time of the day (and year) – When the sun is at its highest daily position, you’ll receive more UV exposure. This time generally occurs from 10 a.m. to 2 p.m.
Prescription medications – Several types of medications can heighten your sensitivity to UV radiation’s effects. Examples include sulfa drugs, diuretics, birth control pills, tetracycline and tranquilizers.
