In plain language
The National Council on Radiation Protection and Measurements (NCRP) recommends cutting the US annual occupational lens dose limit from 150 mSv to 50 mGy, citing cataract risk at lower doses than once thought, and calls eye protection a necessity for the interventional fluoroscopy team.
At a glance
- Type of study
- Guideline or consensus statement
- Who was studied
- Interventional cardiologists, Interventional radiologists, Mixed lab staff, Patients
- Where
- United States
- Topics
- Eye lens and cataractsRegulation and policyPersonal protective equipmentRoom shielding and protective devicesDosimetry and monitoringPatient doseTraining and education
- Summary based on
- the full text
What it found
NCRP recommends lowering the annual occupational lens of eye dose limit from 150 mSv equivalent dose to 50 mGy absorbed dose.
Key figures: 150 mSv to 50 mGy
Epidemiological evidence points to a dose threshold for vision-impairing cataracts of about 1 to 2 Gy, lower than previously understood; a threshold model should continue to be used.
Key figures: about 1 to 2 Gy
Eye protection devices reduce lens dose substantially in fluoroscopy: leaded glasses by 2-3 times, shielded sterile drapes by about 25, ceiling shields by over 100.
Key figures: factor 2-3 (glasses); ~25 (drapes); >100 (ceiling shields)
The NCRP 50 mGy limit is considered adequately protective and less restrictive than the International Commission on Radiological Protection (ICRP) 20 mSv limit for interventional fluoroscopy practice.
Key figures: 50 mGy vs 20 mSv
Adequate eye protection is a necessity in fluoroscopically guided interventional and cardiac procedures, with policies including dose monitoring and personal protective equipment (PPE) deployment.
Limits to keep in mind
This is a summary of a consensus commentary rather than primary research; device reduction factors are cited from other studies, and the cataract threshold evidence is described as uncertain.
Related research summaries
- Radiation protection practices in diagnostic and interventional cardiology: Position paper from Portuguese Association of Interventional Cardiology (2025, Guideline or consensus statement)
- IU Health Handbook of Fluoroscopy Safety (Guideline or consensus statement)
- Radiation Protection in Interventional Radiology (2022, Narrative review)
- Radiation-Induced Noncancer Risks in Interventional Cardiology: Optimisation of Procedures and Staff and Patient Dose Reduction (2013, Narrative review)
- SCAI/ASE/HRS/SIR/SVS Expert Consensus Statement on Enhanced Radiation Protection: Time for Mandatory and Urgent Action (2026, Guideline or consensus statement)
How this summary was made
ORSIF prepared this summary with AI assistance from the full text of the paper. A program then checked that the passage supporting each finding appears word for word in that source. A person has not yet reviewed each summary, so read the original before relying on a number. ORSIF summarizes research and does not endorse any product or company. Report a problem with this summary.
Prepared November 3, 2026.