Abstract: The present disclosure relates to user interfaces for virtual reality and augmented reality head mounted displays. One embodiment of the present disclosure involves: (i) initializing an application instance for interacting with multi-layered media content output to a head-mounted display; (ii) receiving digitized speech and processing the digitized speech to extract text; (iii) comparing one or more words from the extracted text with a predefined keyword list to determine a response identifier; (iv) determining if the response identifier matches a response identifier stored in a database; and (v) if the response identifier matches a response identifier stored in the database, triggering an action in the application instance or retrieving from the database metadata associated with a media layer of the multi-layered media content.

Abstract: Systems and apparatuses are provided for reducing the focal length of a head mounted display (HMD) while maintaining image quality and providing diopter adjustment for a user of the HMD. A lens stack comprising a plurality of lenses provides negative and positive focal length to achieve a traditional eye box.