Content area
Full Text
The purpose of the occupational vision assessment is to identify visual ability that is out of the reference range for a safe and effective level of productivity. "Clearly, the way we use our eyes can determine how well we learn, work and perform" (Anshel, 2006 , p. 20). A basic vision examination is an important component of the post-offer examination, hazard-specific vision surveillance, or return-to-work fitness determination and it is a means to prevent occupational eye injuries and driving accidents. Workers are screened for general eye health, distance and near vision, color distinction, visual fields, and tonometry. Those who have corrective lens are examined with and without them.
Visual acuity refers to sharpness and clarity of vision. "20/20 vision is a term used to express normal visual acuity measured at a distance of 20 feet. If you have 20/20 vision, you can see clearly at 20 feet what should normally be seen at that distance. If you have 20/100 vision, it means that you must be as close as 20 feet to see what a person with normal vision can see at 100 feet" (American Optometric Association, 2010 ). The British use the metric equivalent, which is 6/6 vision. Visual acuity can be tested using...