Question 740
{"accessible":false,"alternatives":[{"id":3750,"text":"20 mSv"},{"id":3751,"text":"40 mSv"},{"id":3752,"text":"60 mSv"},{"id":3753,"text":"80 mSv"},{"id":3754,"text":"100 mSv"}],"archived":false,"correctAlternativeId":3750,"explanation":"\u003cp\u003eThe dose limit set by the ICRP regarding the equivalent dose to the lens of the eye is 20 mSv a year, averaged over defined periods of 5 years with no single year \u0026gt; 50 mSv. (This was previously 150 mSv a year and updated in 2013).\u003c/p\u003e\u003cp\u003eExcessive exposure of the lens to radiation causes cataract formation as a \u003ca title=\"Deterministic effects\" class=\"internal\" href=\"/articles/deterministic-effects\"\u003edeterministic effect\u003c/a\u003e.\u003c/p\u003e\u003cp\u003eAdapted from\u0026nbsp;\u003ca href=\"https://en.wikibooks.org/wiki/Basic_Physics_of_Digital_Radiography\"\u003eBasic Physics of Digital Radiography\u003c/a\u003e\u0026nbsp;by\u0026nbsp;Kieran Maher,\u0026nbsp;with author's permission (License:\u0026nbsp;\u003ca href=\"https://creativecommons.org/licenses/by-sa/3.0/\"\u003eCreative Commons\u0026nbsp;BY-SA 3.0\u003c/a\u003e)\u003c/p\u003e","id":740,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1505","nextQuestionPath":null,"relatedArticles":[],"alsoUsedIn":[],"stem":"\u003cp\u003eAccording to the ICRP dose limits, the maximum permissible dose per annum to the lens of the eyes of persons occupationally exposed is...\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/740"}],"attemptsPercentages":[{"alternativeId":"3750","percentage":76},{"alternativeId":"3752","percentage":3},{"alternativeId":"3753","percentage":3},{"alternativeId":"3751","percentage":8},{"alternativeId":"3754","percentage":11}],"promptToLogin":false,"questionManager":false,"articleId":"dose-limits"}