What is the annual dose limit for the lens of the eye?

What is the annual dose limit for the lens of the eye?

• A. 0.5 rem (0.005 Sv)
• B. 1.5 rem (0.15 Sv)
• C. 1.0 rem (0.01 Sv)
• D. 2 rem (0.02 Sv)

Answer: (B)

The lens of the eye is highly radiosensitive, so a dedicated annually allowed dose is set to reduce the risk of cataracts. The traditional occupational limit for the lens is about 0.15 sieverts per year, which equals 150 millisieverts (0.15 Sv = 150 mSv = about 15 rem). This level reflects the need to protect the eye’s lens from radiation exposure over time. The other options represent much smaller annual doses and do not match this lens-specific limit. So the correct value is the one that expresses 0.15 Sv per year (0.15 Sv = 150 mSv).

The lens of the eye is highly radiosensitive, so a dedicated annually allowed dose is set to reduce the risk of cataracts. The traditional occupational limit for the lens is about 0.15 sieverts per year, which equals 150 millisieverts (0.15 Sv = 150 mSv = about 15 rem). This level reflects the need to protect the eye’s lens from radiation exposure over time. The other options represent much smaller annual doses and do not match this lens-specific limit. So the correct value is the one that expresses 0.15 Sv per year (0.15 Sv = 150 mSv).