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I've acquired a new superpower

danielwirtz.com

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Re: I've acquired a new superpower

#201

Post by svilen_dobrev »

half-off-topic..

i have ~1 diopter shortsightness. Was less before, slowly going up. So screens are getting blurrier. Have glasses but still try avoid using them.

If i put the (flat edged) TV remote control at about 10cm from my face so it horizontally shadows lower half of both eyes, i see perfectly (without any glasses).

go figure..

Re: I've acquired a new superpower

#203

Post by Tempat »

soco wrote: post #65
Workaccount2 wrote: post #43

At a local bar they had a game machine, and if you got a high score on any of the games, your tab for the evening was free. One of the games was a "spot the differences" between two pictures with an ever decreasing timer for each round. Using this trick I was able to easily surpass the high score, and garner a crowd watching me perform this mind numbing feat. Probably my peak fame right there.

I can't overlap the images to save my life - they get like halfway there and that's it...

If you mean literally you can only bring them half way together, try just moving twice as far away.

Re: I've acquired a new superpower

#204

Post by lxe »

Instead of crossing your eyes and attempting to focus, what can really help relax your ocular muscles is to do the opposite: look "past" the images into the distance until the images overlap.

Re: I've acquired a new superpower

#205

Post by adamc »

soco wrote: post #65
Workaccount2 wrote: post #43

At a local bar they had a game machine, and if you got a high score on any of the games, your tab for the evening was free. One of the games was a "spot the differences" between two pictures with an ever decreasing timer for each round. Using this trick I was able to easily surpass the high score, and garner a crowd watching me perform this mind numbing feat. Probably my peak fame right there.

I can't overlap the images to save my life - they get like halfway there and that's it...

Yeah, me either. My eyes really resist it. And after trying it a few times it messes up my focus for a bit.

Re: I've acquired a new superpower

#206

Post by claiir »

jeffhuys wrote: post #161
nayuki wrote: post #68

I discovered this trick independently about a decade ago, to use cross-eyed viewing to easily spot differences between two similar images. Like you said, the parts that mismatch appear to shimmer and be unstable, making them obvious. However, I feel eye strain from doing it, so I prefer other methods. 99% of the time, I do https://en.wikipedia.org/wiki/Blink_comparator instead, just switching between two images with…

To reduce eye strain, don’t cross your eyes, but relax them (so, the other way). Instantly clear and snaps together as if magnetic.

This is called “divergence” [1] and is less straining on your eyes than crossing them (“convergence” [2]) while being equally as effective spotting differences, even on video. It’s also what your eyes naturally do when you watch stereoscopic 3D with tinted glasses—the stereoscopic images are pulled out (divergence) not pushed in (convergence/cross-eyed). I’ve been doing this since I childhood. If you get good at it, you can watch side-by-side 3D videos in 3D with just your naked eye (e.g. VR). I believe there’s a reddit covering the more prurient variety of that!

[1] https://en.wikipedia.org/wiki/Vergence#Divergence

[2] https://en.wikipedia.org/wiki/Vergence#Convergence

Re: I've acquired a new superpower

#207

Post by adamc »

I couldn't do the cross-eyed thing, but it took me maybe 20 seconds to spot the difference just by looking at sections of the images. But I'm not sure that would have worked had the missing bean been buried in the denser part of the photo.

Re: I've acquired a new superpower

#209

Post by HaZeust »

haswell wrote: post #167
Fnoord wrote: post #108

Earlier quoted context omitted.

All it did was hurt my eyes. I'll opt out of playing, superpower be damned.

I think the key is not "going cross-eyed" as much as it is relaxing your focus until the images merge. If you intentionally cross your eyes, it hurts. If you de-focus/relax your eyes until the images merge, it doesn't hurt.

Relaxing focus for me doesn't cause merging or cross-eyed effects, it causes my vision to go too blurry to do anything lol
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