Occupational Cataracts and Lens Opacities in Interventional Cardiology : the O'CLOC Study
The purpose of this study is to test the existence of an increased risk of cataracts among interventional cardiologists as compared to cardiologists not exposed to X-rays.
|Study Design:||Observational Model: Case Control
Time Perspective: Cross-Sectional
|Official Title:||Study of the Occupational Risk of Radiation-induced Cataracts Among Cardiologists|
- Lens opacities [ Time Frame: up to 1.5 year ] [ Designated as safety issue: No ]
- Visual acuity [ Time Frame: up to 1.5 year ] [ Designated as safety issue: No ]
- Major eye disorders (glaucoma, etc…) [ Time Frame: up to 1.5 year ] [ Designated as safety issue: No ]
|Study Start Date:||October 2009|
|Study Completion Date:||March 2011|
|Primary Completion Date:||January 2011 (Final data collection date for primary outcome measure)|
French coronary interventional cardiologists and cardiologists specializing in cardiac arrhythmias treatments (electrophysiologists), occupationally exposed to X-Rays
French non-interventional cardiologists and non medical workers, not occupationally exposed to X-Rays
This cross-sectional study includes cardiologists aged > 40 years: a group of interventional cardiologists (coronary interventionists and electrophysiologists) and a group of unexposed workers (including cardiologists). Individual information, including risk factors of cataracts (age, diabetes, myopia, etc. ...), are collected during a telephone interview. For the exposed group, a specific section of the questionnaire is focused on the occupational history, the description of the procedures (type, frequency, radiation protection tool) and will be used for the classification into "comparable exposure level" groups according to estimates of cumulative dose. For all participants, eye examinations are performed to specifically detect cataracts even in the early stages (lens opacities, LOCS III according to the international standard classification).
|Fontenay-aux-Roses, France, 92262|
|Principal Investigator:||Sophie JACOB, PhD.||Institut de Radioprotection et de Surete Nucleaire|