1. A method for presenting a translation of a real world expression to a wearer of a see through head mounted display apparatus, comprising: determining a gaze of a wearer looking through the see-through display of the apparatus; determining a three dimensional location of one or more objects in the field of view of the user through the see-through display, the determining of the three dimensional location of the object is performed using the one or more sensors; receiving a selection of data for translation in the field of view of the wearer by reference to the gaze of the wearer at one of the objects; analyzing the data for translation to provide input data; translating the input data into a translated form for the user; and rendering the translation in an audio or visual format in the see through head mounted display.