THE EFFECT OF VIEWING A CAR HEAD-UP DISPLAY ON OCULAR ACCOMMODATION AND RESPONSE TIMES

It has been demonstrated that the interposition of a virtual image display between an observer and a distant target can interfere with the observer's accommodative response. The aim of the current communication was to present results from a study that objectively assessed the effect on ocular accommodation of focusing a virtual car HUD image at various positions from optical infinity to 50cm. In addition data on subject response times to detecting changes of the visual scene and HUD image for the different HUD image positions are presented. Detection rates of noting changes in outside world and HUD images were also analyzed.