The NEISS is a national probability sample of hospitals in the U.S. and its territories. Patient information, including age, gender, and whether the injury is occupational or work-related, is collected from each NEISS hospital for every emergency visit. From the sample, work-related injuries by body part affected that are treated in hospital emergency rooms nationwide can be estimated.
At the Internet-based Work-RISQS, rates are reported as the number injuries/illnesses per 100 full-time equivalent (FTE) workers. For the calculation, rate denominators are available by year, month, age group, and sex in FTE (1 FTE = 2,000 hours/year) for all jobs worked. The employment estimate is derived from the Bureau of Labor Statistics Current Population Survey. The rate per 10,000 full-time workers is computed by (1) dividing the number of occupational injuries reported by the total number of hours worked by all employees during the calendar year, and (2) multiplying the result by 20,000,000. The factor 20,000,000 represents the hours worked in a year by 10,000 FTE workers (working 40 hours per week, 50 weeks a year). Estimates less than 2,500 do not meet the minimum reporting requirements and rates are not shown. Rates are not restricted by industry or employer and include volunteers working for an organized group (for example, volunteer firemen or health aides).
An occupational eye injury is any injury or illness affecting the eye (including the conjunctiva, cornea, eyeball, inside and outside of the eyelids, iris, lacrimal glands, lens, optic nerve, orbit, retina, and upper and lower eyelashes). The eye injury or illness must result from an event in the work environment. Work-related eye injuries/illnesses are counted if treated in an emergency department (ED re-visits are excluded) without regard to restricted activity, days away from work, payment by workers’ compensation, or involvement of a consumer product.