title: Ionizing radiation-induced cataract in interventional cardiology staff.
abstract: BACKGROUND
  The use of ionizing radiation has led to advances in medical diagnosis and treatment.
  
  
  OBJECTIVE
  The purpose of this study was to determine the risk of radiation cataractogenesis in the interventionists and staff performing various procedures in different interventional laboratories.
  
  
  METHODS
  This cohort study included 81 interventional cardiology staff. According to the working site, they were classified into 5 groups. The control group comprised 14 professional nurses who did not work in the interventional sites. Participants were assigned for lens assessment by two independent trained ophthalmologists blinded to the study.
  
  
  RESULTS
  The electrophysiology laboratory staff received higher doses of ionizing radiation (17.2 ± 11.9 mSv; P < 0.001). There was a significant positive correlation between the years of working experience and effective dose in the lens (P < 0.001). In general, our findings showed that the incidence of lens opacity was 79% (95% CI, 69.9-88.1) in participants with exposure (the case group) and our findings showed that the incidence of lenses opacity was 7.1% (95% CI:2.3-22.6) with the relative risk (RR) of 11.06 (P < 0.001).
  
  
  CONCLUSIONS
  We believe that the risk of radiation-induced cataract in cardiology interventionists and staff depends on their work site. As the radiation dose increases, the prevalence of posterior eye changes increases.
authors: Department of Nuclear Medicine, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
authors: Ahmad
authors: A
authors: Bitarafan Rajabi
authors: Cardiovascular Intervention Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
authors: Feridoun
authors: F
authors: Noohi
authors: Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, IR Iran.
authors: Hassan
authors: H
authors: Hashemi
authors: Cardiac Electrophysiology Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
authors: Majid
authors: M
authors: Haghjoo
authors: Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, IR Iran.
authors: Mohammad
authors: M
authors: Miraftab
authors: Department of Nuclear Medicine, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
authors: Nahid
authors: N
authors: Yaghoobi
authors: Department of Nuclear Medicine, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
authors: Fereydon
authors: F
authors: Rastgou
authors: Department of Nuclear Medicine, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
authors: Hadi
authors: H
authors: Malek
authors: Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, IR Iran.
authors: Hoshang
authors: H
authors: Faghihi
authors: Department of Nuclear Medicine, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
authors: Hassan
authors: H
authors: Firouzabadi
authors: Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, International Campus, Tehran, IR Iran.
authors: Soheila
authors: S
authors: Asgari
authors: Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, IR Iran.
authors: Farhad
authors: F
authors: Rezvan
authors: Department of Nation Radiation Protection, Iranian Nuclear Regulatory Authority, Tehran, IR Iran.
authors: Hamidreza
authors: H
authors: Khosravi
authors: Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, IR Iran.
authors: Sara
authors: S
authors: Soroush
authors: Department of Epidemiology, Faculty of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.
authors: Mehdi
authors: M
authors: Khabazkhoob
keywords: Cardiology; Iran; Lens Opacity