A method includes receiving, through a processor of a data processing device communicatively coupled to a memory, data related to a dimensional parameter of a display unit and/or a distance between a user and the display unit, and determining, through the processor, a comfortable range of perception of a sub-portion of three -dimensional (3D) video data on the display unit based on the dimensional parameter of the display unit and/or the distance between the user and the display unit. The method also includes adjusting, through the processor, a disparity between one or more sub -portion(s) of the 3D video data corresponding to perception of the sub-portion by a left eye of the user and one or more sub-portion(s) of the 3D video data corresponding to perception of the sub-portion by a right eye of the user such that the sub-portion is mapped within the determined comfortable range of perception.