Risk of cataract in health care workers exposed to ionizing radiation: A systematic review

Elena Della Vecchia, Alberto Modenese, Tom Loney, Martina Muscatello, Marilia Silva Paulo, Giorgia Rossi, Fabriziomaria Gobba

Research output: Contribution to journalReview articlepeer-review

19 Citations (Scopus)


Background: The eye is an important sensory organ occupationally exposed to ionizing radiation (IR) in healthcare workers (HCWs) engaged in medical imaging (MI). New evidence highlights the possible induction of cataract at IR exposure levels to be much lower than expected in the past. Objective: Conduct an updated review on the current evidence on cataract risk in healthcare workers exposed to IR. Methods: Published scientific studies on cataract risk in IR exposed healthcare workers were collected through a systematic search of two biomedical databases (MEDLINE and Scopus). Data from included studies was extracted and summarized. Study quality was also assessed. Results: All 21 eligible studies reported an increased prevalence of cataract, especially posterior subcapsular cataract, in IR exposed HCWs with a higher prevalence in interventional cardiology staff. Discussion: Our review synthesizes the latest evidence to support the hypothesis of a significantly increased risk of occupational cataract in healthcare workers operating MI and exposed to IR, especially in interventional cardiologists. Data also support a dose-response relationship between IR exposure and the prevalence of opacities, especially posterior subcapsular opacities. Con-clusions: Findings highlight the need for effective control measures including appropriate training, adherence to protective procedures, and a constant use of shields and eye personal protective equipment in healthcare workers with optical exposure to IR. Periodic health surveillance programs, possibly including lens evaluation, are also important to monitor cataract risk in these MI operators.

Original languageEnglish
Pages (from-to)269-284
Number of pages16
JournalMedicina del Lavoro
Issue number4
Publication statusPublished - Jul 1 2020


  • Cataract
  • Dosimeter
  • Dosimetry
  • Healthcare workers
  • Interventional fluoroscopy
  • Interventional radiology
  • Ionizing radiation
  • Occupational exposure
  • Occupational injury
  • Radiation
  • Radiation effects
  • Radiation protection
  • Radiation workers
  • Radiation-induced cataract
  • Radiologist work-related injury
  • Radiology

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health


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