Are virtual reality headsets safe for the eyes?

Virtual Reality (VR) technology can transport us to sci-fi battlefields, underwater, in space, and beyond. With a host of new games, apps, and headsets offering a three-dimensional experience ( 3D) appealing to users, it's no surprise that many families are embracing VR technology. But what impact does VR hardware have on the eyes? Although the technology is relatively new and no studies to long term has not been achieved, we know a few things.

Immersive 3D images

VR headsets create life-size,

3D virtual environment

without the limitations of a screen. They mimic the way our eyes already work by showing each eye a slightly different image, so we perceive depth. VR headsets use either two streams sent to one screen or two screens LCD, one for each eye. They also have lenses that sit between your eyes and the pixels. The lenses focus and reshape the image for each eye and create a stereoscopic 3D image. VR headsets provide an increased field of view ( image width) to create a sense of immersion. Additionally, the headsets use “head tracking”—shifting the image in front of you as you look up, down, and side to side. 'other.

Why do manufacturers set age limits?

Most VR headset manufacturers claim the device is not suitable for children under the age of 12 or 13."Age limits for VR technology may make sense for content, but to our knowledge, this technology poses no threat to the eyes," said Stephen Lipsky, MD, a pediatric ophthalmologist who practices in Georgia.

Eye strain and fatigue

Staring at the screen of a VR headset or any digital device for an extended period of time may

eyestrain or tiredness

This is because you tend to blink less when using a digital screen device than usual. This can cause the front surface of your eye to dry out and feel tired.

Dizziness and motion sickness

Viewing an image involving movement gives the brain the same visual cues it receives during actual physical movement. This is why using VR headsets can lead to dizziness. If you are susceptible to motion sickness, transport on a roller coaster or a boat, you will probably also be susceptible to virtual motion sickness.

What if you have an eye disease?

Individuals who have

amblyopia (an imbalance of visual strength between the two eyes)

,

strabismus (misaligned eyes)

, or other conditions that prevent normal focus, depth perception, or 3D vision may not experience the 3D effects of VR headsets. This does not mean that impaired vision may be caused by the VR headsets. However, children or adults who suffer from these disorders may be more likely to experience headaches and/or eye strain when using virtual reality equipment. If you wear glasses to correct an error refraction or an eye disorder, you must keep your glasses on while using a VR headset.