A virtual reality apparatus comprising: a virtual reality display screen ; an eye tracking system that tracks a gaze direction of one or more eyes of a user to determine an object of focus in a virtual reality display ; a processor ; and a memory having a set of instructions that when executed by the processor causes the virtual reality apparatus to: determine a particular scene of a virtual reality imagery by analyzing a code displayed by said virtual reality display screen that is associated with said particular scene; determine a predetermined luminance value associated with said particular scene of a virtual reality imagery by decoding luminance scene values that are encoded into video frames; estimate one or more pupil dimensions of the one or more eyes based upon said predetermined luminance value of virtual reality imagery displayed by the virtual reality display screen , comprising determining what pupil dilation should be based upon said predetermined luminance value; determine a focal plane based upon the estimated one or more pupil dimensions of the one or more eyes based upon said predetermined luminance value; generate a synthetic depth of field based upon the focal plane ; and apply a blurring effect to one or more pixels of the virtual reality display based upon the one or more pixels being outside of the synthetic depth of field. a virtual reality display screen ; an eye tracking system that tracks a gaze direction of one or more eyes of a user to determine an object of focus in a virtual reality display ; a processor ; and a memory having a set of instructions that when executed by the processor causes the virtual reality apparatus to: determine a particular scene of a virtual reality imagery by analyzing a code displayed by said virtual reality display screen that is associated with said particular scene; determine a predetermined luminance value associated with said particular scene of a virtual reality imagery by decoding luminance scene values that are encoded into video frames; estimate one or more pupil dimensions of the one or more eyes based upon said predetermined luminance value of virtual reality imagery displayed by the virtual reality display screen , comprising determining what pupil dilation should be based upon said predetermined luminance value; determine a focal plane based upon the estimated one or more pupil dimensions of the one or more eyes based upon said predetermined luminance value; generate a synthetic depth of field based upon the focal plane ; and apply a blurring effect to one or more pixels of the virtual reality display based upon the one or more pixels being outside of the synthetic depth of field. determine a particular scene of a virtual reality imagery by analyzing a code displayed by said virtual reality display screen that is associated with said particular scene; determine a predetermined luminance value associated with said particular scene of a virtual reality imagery by decoding luminance scene values that are encoded into video frames; estimate one or more pupil dimensions of the one or more eyes based upon said predetermined luminance value of virtual reality imagery displayed by the virtual reality display screen , comprising determining what pupil dilation should be based upon said predetermined luminance value; determine a focal plane based upon the estimated one or more pupil dimensions of the one or more eyes based upon said predetermined luminance value; generate a synthetic depth of field based upon the focal plane ; and apply a blurring effect to one or more pixels of the virtual reality display based upon the one or more pixels being outside of the synthetic depth of field. <EOS>