Radiation cataract is caused by exposure to ionizing radiation at doses that cause acute radiation sickness. The process of developing a cataract can be very long, 10 to 20 years. First, the lens appear cloudy spot near the front and rear of the lens capsule. Gradually, these opacities progressed to full. More sensitive to ionizing radiation and the lens in childhood and young age.
Ultraviolet radiation. It is believed that prolonged exposure to ultraviolet radiation increases the risk of developing cataracts. However, this view has not been proved.