Increasing numbers of people work inside buildings under artificial lighting both night and day causes many of diseases ,some of this disease represent as biological hazard include hazard for eye ,skin ,as well as breast cancer, sleep disorders. The current study obtain that human exposure to artificial lighting more than 10 hours daily, man exposure to artificial lighting about 10-17 hours daily . 100% of children exposure to artificial lighting more than 12 hours daily, children exposure about 4-5 hours daily to schools artificial lighting . Teens exposure to artificial light about 11-17 hours daily. 49% of women exposure to artificial lighting low from 12 hours daily, while 51% of woman exposure to artificial light more than12 hours daily. In this study , illumination level of artificial light were measured in many locations include bedroom, living room ,and children room in home as well as offices and lectures room in college . illumination level of light at those locations were similar to international standards.
