Webinars on lens of the eye

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In order to prevent opacification (or clouding of the lens), which, in its advanced stages, is referred to as a cataract, dose limits have been defined for the lens of the eye. In April 2011, the the International Commission on Radiological Protection (ICRP) issued a formal statement indicating that tissue reactions for the lens of the eye have dose thresholds that are, or might be, lower than previously considered. The ICRP therefore recommended a reduction in the equivalent dose limit for the lens of the eye to 20 mSv in a year, averaged over defined five-year periods (i.e., 100 mSv/5 years), with no single year exceeding 50 mSv. This recommendation is for worker exposure; the ICRP did not change its recommended dose limit for the lens of the eye for public exposures.

In alignment with the ICRP's recommendations, the CNSC discussion paper DIS-13-01, Proposals to Amend the Radiation Protection Regulations, proposed to:

  • change the equivalent dose limit for the lens of an eye for a nuclear energy worker from the current limit of 150 mSv to 50 mSv in a one-year dosimetry period
  • add a new dose limit of 100 mSv in a five-year dosimetry period (for the lens of an eye for a nuclear energy worker)

In 2018, the CNSC and the Canadian Radiation Protection Association (CRPA) co-hosted two webinars, bringing together experts to discuss topics related to radiation dose limits for the lens of the eye.

Webinar #2: September 27, 2018

Implementation of the International Commission on Radiological Protection (ICRP) Dose Limits for the Lens of the Eye

The Canadian Nuclear Safety Commission (CNSC) and the Canadian Radiation Protection Association (CRPA) hosted a webinar on September 27, 2018 on the implementation of ICRP dose limits for the lens of the eye. It presented expert opinions and perspectives behind the implementation of dose limits.

Speakers

Webinar #1: March 21, 2018

Scientific basis for the recommended dose limits for the lens of the eye

The Canadian Nuclear Safety Commission (CNSC) and the Canadian Radiation Protection Association (CRPA) hosted a webinar on March 21, 2018 on the scientific basis for the recommended dose limits for the lens of the eye for nuclear energy workers, as set by the International Commission on Radiological Protection (ICRP). The webinar presented expert opinions and perspectives behind the science.

Listen to the recording of the webinar.

Speakers

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