Why do you need to wear prescription eye glasses when wearing a VR headset?

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I’m near-sighted, and the VR lens are inches from my face, so why does VR still recommend I wear my eye glasses?

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5 Answers

Anonymous 0 Comments

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Anonymous 0 Comments

The *lens* is inches from your eyes. The lens does the same thing glasses do, but backwards, to make the nearby screen appear far away so that your eyes are able to focus on it.

Problem is, your eyes struggle to focus on far off objects, and have an easier time with nearby objects, so you need *another* lens to make up for it. If you removed both lenses and looked directly at the screen, it would be in focus (if you’re nearsighted enough).

Anonymous 0 Comments

The headset might be inches from your face, but the lenses in the headsets, the display, and the entire software running it is designed to make it seem like you are in a real world when you put it on. A big part of that real world feel is the feeling of objects being near and far. Effectively the entire system is causing light to reach your eyes in the same manner as it would if that virtual object were really there in front of you. Which means near or far sighted ness is still going to be an issue.

Anonymous 0 Comments

If you’re nearsighted, you don’t need to wear your glasses. Nearsighted means you can see things that are close to you, and the lens is inches from your face.

Anonymous 0 Comments

TL;DR: The focal distance of your VR headset may be adjustable, or set to a “generic” focal length. Either yours is adjusted incorrectly, cannot adjust far enough for you, or is set to a generic focal length that is wrong for you.

Full answer: This is more complicated than it appears.

Some commenters have said that the lenses within the VR headset make more distant objects look further away so that they look more realistic. This is at best only partially true.

Some other commenters have mentioned that they do not need their glasses at all. This may be true for them, but it may also depend upon their headset and how (or whether) it can be adjusted.

Here is the problem:

If the lenses in a VR headset were intended to make objects that are more distant look more distant and closer objects to appear closer, they would have to dynamically adjust all the time. If you looked at a flower in VR at 5 feet, then a tree at 30 feet, then a mountain at 5 miles, each would require a different focal depth.

The screens inside the VR headset are, however, all at the same distance. If the lenses controlled what was or was not blurry, a flower in front of a mountain scene would show the flower and the mountain in the same focus.

Instead, the VR system tries to determine what you are looking at (or what it wants you to look at) and puts that piece into appropriate focus by adjusting the digital image on the screen.

The lenses, on the other hand, are used to set the images in the VR headset out to a distance where the user is likely to be able to see them clearly. Sometimes they aim for a particular visual effect, such as a 65″ screen at 6 feet. Many of them have adjustable focal distances for this purpose. Others just pick a distance where they figure most people will not need glasses.

Unfortunately, it sounds as if you have VR lenses that have a fixed focal distance that doesn’t work for you. You may want to look at them more closely to see if there is a hidden way to adjust the focal depth, but otherwise you either need to wear corrective lenses, replace the lenses in the headset (probably not feasible), or get a different VR headset.