What is the threshold dose for cataracts caused by radiation?

The threshold dose for cataracts caused by radiation is recognized to be around 2.0 Gy. This means that exposure to radiation levels at or above this threshold can increase the risk of developing cataracts in the lens of the eye. It's important to understand that the risk is cumulative over a person's lifetime, and the biological effects of radiation on lens tissue can lead to opacities forming, resulting in cataract development after this dose threshold.

While lower doses may not typically lead to cataracts, they could still produce other effects or contribute to other health issues. Thus, understanding the threshold for cataracts is crucial for safety standards in radiological practices, where minimizing exposure to these levels should be prioritized to protect patients and staff from potential long-term effects.