AR, VR, MR, What Can Be Improved?

In the real world, the accommodation and the vergence match, but in VR they are in conflict, and this can lead to eye strain and headaches as the eyes try to accommodate to a variety of distances rapidly. This can lead to other short-term effects when the user removes the headset such as blurriness. Before using a Virtual reality headset, the "inter-pupillary distance" should be measured – this distance is used to triangulate the distance to the eyes and the object. This helps improve the experience for the user by reducing the effect of this issue in VR.

One method to overcome the vergence accommodation issue to have a field of view which focuses in and out depending on the user's viewpoint, this requires eye-tracking capabilities and specialised software. NVIDIA Near Eye Light Field Display prototype was introduced in 2013 which uses a microlens display to divide an image to individual light rays, and the display creates a light field directly in front of the user's eyes. This allows the user to focus on the different depths of the scene. Some other methods to overcome this problem are: to minimise the consequences by making exiting conflicts less common (e.g. increasing the distance to the virtual scene where possible), maximising the depth of other cues (e.g. shading realism, perspective, and other small visual cues), taking time for objects to move in and out of depth to give the users eyes time to adjust.

Another side-effect, which is seen more commonly with VR headsets, is motion sickness. This tends to be a result of latency, tracking and other such effects. Users are subject to a perception of moving but are not themselves moving, and this can lead to motion sickness because the image does not match the other sensory inputs from the user standing still. Similarly, if the user moves their head quickly, the image must match to their movement. A lag between the image and the movement could also lead to feeling motion sick whilst wearing a VR headset. This means that users may not wish to use the headset for an increased period, due to this side effect.

With the past decade of development for this technology, the 2020-2030 decade is destined to be an exciting time for AR, VR and MR products. By solving the issues currently seen in these devices, there will be a greater uptake of this technology, for both a consumer and industry/enterprise space. To find out more on this, and other AR/VR/MR forecasts and technologies, to take a look at the IDTechEx Report on AR and VR, please visit www.IDTechEx.com/ARVR.

To find out more about wearable technology research available from IDTechEx visit www.IDTechEx.com/Research/WT or to connect with others on this topic, IDTechEx Events is hosting: Wearables USA, November 18-19 2020, Santa Clara, USA www.IDTechEx.com/EVUSA.