Quality control of viewing boxes at the University Hospital of the Universidade Federal do Rio de Janeiro

At the University Hospital of the Universidade Federal do Rio de Janeiro, a survey was performed to analyze the working conditions of viewing boxes. The survey consisted in checking the illuminance of the rooms, the luminance levels of the viewing boxes and their uniformity. Results show that the luminance levels are all below the recommended levels, that the uniformity is generally inadequate, and that the room illuminance is adequate in only 19% of the rooms when compared to recommendations contained in international quality control protocols. Cleaning and minor repairs showed that an improvement of around 50% in luminance levels can be achieved at extremely low cost.