Associate Safety Professional Practice Exam

Which type of exposure is most likely to cause cataracts?

1. Ultraviolet radiation

2. Infrared radiation

3. Visible light

4. X-rays

The correct answer is: Infrared radiation

The most likely exposure to cause cataracts is ultraviolet (UV) radiation. UV radiation, particularly from the sun, is well-documented as a significant risk factor for the development of cataracts. It can damage the lens of the eye, leading to clouding and potential vision impairment. Research shows that prolonged exposure to UV radiation increases the risk of cataract formation, particularly in individuals with inadequate UV protection, such as those not wearing sunglasses or hats in bright sunlight. This risk is especially concerning for people who spend a lot of time outdoors or are exposed to intense UV sources. Infrared radiation, while it can cause thermal injury to the eye, is not associated with cataract formation in the same way that UV radiation is. Visible light does not have enough energy to cause the biological changes linked to cataracts. Similarly, while X-rays can pose a risk due to radiation exposure, they are not a typical cause of cataracts compared to the effects of UV light. Thus, the link between UV radiation and cataract development stands out as the most significant in this context.