From 1952 to 1954, stereoscopic films were at the height of their popularity, with Hollywood producing more than 65 stereoscopic feature films. However, viewers’ interest rapidly declined after this initial success. Part of the reason for this was increased competition from other immersive cinema formats. Undeniably, however, some of the problems with 3D cinema appeared to be associated with issues of visual discomfort [Citation]. Powered by the development of the digital technology, virtual reality gets resurrected because of the photo-realistic experience it could offer. However, as the current generation of Head Mounted Display (HMD) -a flat square screen inside a pair of goggles that simulate depth of field- is still based on the steoroscopy techinque, the discomfort caused by vergence-accommodation conflict still cannot be avoided.
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