Adjusting IPD for eye dominance?

Katkon

K
I found out recently that I'm left eye dominant. Didn't think anything of it until I picked up the DK2 after a long time on the shelf, and noticed that distant asteroids in a RES were badly out of focus - and that their apparent number would change depending on whether I closed my left or right eye in the DK2.

When I originally calibrated the DK2 I measured 66.1mm (this is before I knew I was left eye dominant). I found instructions online today for how to measure IPD manually when suffering from eye dominance. My measurements were essentially identical to the 66mm measured originally.

But the asteroids were bothering me, so I increased the DK2's IPD setting to 67mm. That seemed to improve things a bit. So I increased to 68mm, and that improved asteroids at a distance perfectly - they now look the same/in-focus whether I shut my right or left eye when looking through the DK2, though they flicker a bit (I think that's just a graphics/rendering issue vs. an eye dominance issue).

Trouble is, it "feels" like objects close in might have gotten a bit more blurred. But I'm not completely sure. So... anyone have thoughts on how to figure out/adjust for eye dominance in the DK2. Does adding a whole 2mm sound like too much? I'd prefer not to go to an optometrist to figure this out. :)
 
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Katkon

K
Chaps - when you measure IPD and you suffer from eye dominance, you tend to understate IPD as eye dominance plays tricks on you. So it is "simply the distance between your pupils" but getting an accurate measurement in a mirror, when one eyes plays tricks on you, is a tad difficult - as it turns out.

I visited an optometrist a year ago, who suggested all was fine. But didn't ask him to measure my IPD, unfortunately. Maybe I'll just give my wife a ruler!
 

Yololo69

Yololo69
Also, as you saw, they is a know problem for distant asteroids E.g. like in RES. So it's not only your eyes, but distant ones can sometimes be displayed differently on left and right screens, making their deep distance to be wrong (they appear nearest than what they should). I can see this problem already in first training session (with toxic stuffs to destroy). Only the software IPD is manageed on DK2. Hopefully CV1 have a real IPD hardware adjustement. Question is: does moving the CV1 slider also send the good value to the software part, or do also have to mess with the software setting to make them match? I hope all is automatic and we don't have this double settings to manage...
 

Oculus

Oculus
Everyone has eye dominance (give or take a few odd balls). Quick way to check this is to look at a point source of light or object in the far distance, stretch your arms out and form a little hole between the two hands that you can peer through. You will see the distant object but only with one eye. In most cases thats your dominant eye.

Now if you have a squint, turn etc (esotropia/exotropia or hyper/hypo) then you are in a different ball game with things like partial occlusion etc. If you have a visual difference between two eyes (I do) and this can be corrected by specs than this may be more of an issue( anisometropia (2dioptres or more ). There can be other issues such as eso/exo phorias. Better off getting assessed by an optometrist that is interested in the muscle side of things.
 

Katkon

K
CMDR Holycow said:
Yes, it is a bug. Distant rocks in RES belts aren't rendered corrected in 3d often times.
Click to expand...

Interesting. What's a bit weird, though, is that adding 2mm to my IPD made them render/appear much better. They still shimmer a bit, but I can clearly make out their number. With my measured/correct IPD they look like a garbled mess in the distance/ on the horizon.

Frankly, I wonder how precise the IPD adjustment for the DK2 really is - 2mm isn't a lot.

Update: my wife just measured my IPD at 68mm. So I guess that confirms that it really is difficult to get an accurate measurement when you suffer from relatively severe eye dominance.
 
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Khaldur

K
Katkon said:
it really is difficult to get an accurate measurement when you suffer from relatively severe eye dominance.
Click to expand...

There is an easy method to measure the IPD that avoids errors by eye dominance: http://doc-ok.org/?p=898 (the "update" section at the bottom is the essential part).
That way you only look through one one eye at a time while the other one is closed, so eye dominance shouldn't be able to interfere in any way.
 
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Katkon

K
Khaldur said:
There is an easy method to measure the IPD that avoids errors by eye dominance: http://doc-ok.org/?p=898 (the "update" section at the bottom is the essential part).
That way you only look through one one eye at a time while the other one is closed, so eye dominance shouldn't be able to interfere in any way.
Click to expand...

Yes, thank you. That's how I tried to measure myself originally (I'd also found that link). Didn't quite work though, as my wife still added 2mm when she did it for me.

- - - Updated - - -

JeffRyan said:
One of the things that bothers me about investing in this technology is my left eye being weak.
Click to expand...

Time for a new eye. :)
 
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