Regarding eye focus issues, I've noticed that the focal plane is different depending on what shade the pixel is. If the pixel black then the eye focuses on the LCD panel itself. If the pixel is white the eye focuses through the the now transparent LCD panel and focuses on the backlight layers. And mid tones are kind of a murky in between. But I've noticed that in many cases when looking at dark things on a white background, like text, my eyes try to focus on the backlight instead of the LCD panel.

What you can try is to have a screen with some dark content but on a majority white colored background, like text. Then get really close to the monitor and focus on an upper corner at a really steep side angle, steep enough to where the edge of the backlight layers very clearly look to be behind the LCD panel which now looks like a very discreet front layer. It'll look somewhat like a stained glass window. This should be what the monitor looks like while in normal usage but it doesn't. So something weird is going on with the interaction between the LCD panel and backlight layers to make the eye have a lot of trouble understanding what it's looking at and to find what to focus on.

    6 days later

    CrestfallDreaming One main point he told me is that there is zero link between pain/ level of High and how Big the eye misalignment is. So someone with huge misalignment Might have No issues whereas someone with minor Can be unable to use screens

    +1

        mike how bad was your dry eye issues before having succes’s with patching and how is level of dry eye issues now?

        • mike replied to this.

            CrestfallDreaming I would say much better.

            My problems with red and hurting eyes was quite bad. But was it dry eyes? Maybe some!? I have done LASIK, after that many people get dry eyes. I haven’t found any eye drops that works for me. So I am not sure if it was dry eyes, or just hurting.

                mike so u never had any dry eye tests ? But now you don't have to use dropsnat PC or when sleeping?

                • mike replied to this.

                    chahahc This is really interesting, and would tie into the BVD angle. If each individual eyes focusing on different layers of the LCD, that would cause the eyes to attempt to adjust back into focus, even through the image itself is not out of focus. This adjustment effort would activate facial muscles on the side of your head and browline, which is the primary path of the supraorbital branch of your trigeminal nerve (which I suspect is the central nerve responsible for our symptoms), constricting them and impacting the nerve.

                    I have some worrying experiences as of late, the patching seems to be getting less effective. Or, more specifically, my ability to go from patched - unpatched is causing me symptoms. I did just have sinus surgery 3 weeks ago, so my hope is that all the healing still going on in my head is what is responsible for this increased sensitivity and in a few more weeks it will get back to normal patching behavior. Nothing I can do but wait and see.

                    Mike, did your multi year experience through this have ups and downs as far as your sensitivities went, or was it a fairly linear progression?

                    CrestfallDreaming I've read some places where people call Neruolens a scam

                    I don't think they are a "scam", they jut seem to be overpriced versions of prism lenses you can already get for cheaper. They seem to be charging a lot of $$ for the brand name. But if they work for you, by all means use them. If they have a money back garauntee as ryans said, it cant hurt to try.

                          CrestfallDreaming I have done dry eye tests, and had problems with keeping tears. But I don’t know how big the problem is for me, it’s maybe normal for a person who have done a LASIK with dry eyes.

                          Late in the evening when my eyes hurt little after many hours behind screens, was it because of tired eyes, dry eyes or something else? Can dry eyes be a side effect of tired eye muscles?

                              ensete I have some worrying experiences as of late, the patching seems to be getting less effective. Or, more specifically, my ability to go from patched - unpatched is causing me symptoms. I did just have sinus surgery 3 weeks ago, so my hope is that all the healing still going on in my head is what is responsible for this increased sensitivity and in a few more weeks it will get back to normal patching behavior. Nothing I can do but wait and see.

                              This is interesting. First question, why did you do a sinus surgery? Second question, is this happening after the surgery?

                              When I look at screens my sinus swell up, i took medicine for that, and because of the medicine my eyes didn’t hurt so much. So if you have changed something with your sinus it can affect how your eyes feels.

                              ensete Mike, did your multi year experience through this have ups and downs as far as your sensitivities went, or was it a fairly linear progression?

                              It was more like a staircase, first from a low level I took a huge step. Then no progress for months. Then a smaller step, and no progress for a long time. I gave up a few times. But don’t give up if you fall down a step.

                              ensete I don't think they are a "scam", they jut seem to be overpriced versions of prism lenses you can already get for cheaper. They seem to be charging a lot of $$ for the brand name. But if they work for you, by all means use them. If they have a money back garauntee as ryans said, it cant hurt to try.

                              +1

                                    mike I struggle a lot with dry eye and to me the question is what comes first, dry eye which leads to eye strain or eye strain which leads to dry eye

                                    • mike replied to this.

                                        ensete

                                        Interesting. I'm in no way knowledgeable about the kind of physiology involved in this.

                                        Subjectively to me the closest thing I can describe trying to focus on an lcd monitor is like those magic eye pictures that were on the back of cereal boxes way back when. Sometimes you just try and try but the image stays "two dimensional" and you can't differentiate the lcd panel from the backlight. And then other times it seems your brain just somehow locks on and you can clearly see the three dimensionality of the transparent lcd panel and the backlight. It seems that the less flickering issues there are the easier it is for my brain to achieve this.

                                          My eyes is how I see the world and how I make a living

                                          Now why would I put them in harms way by trying to make them get used to inferior screens which manufacturers like to shove into our faces?

                                          This is not the way

                                            Fenkins As I just said another thread...

                                            While I'm glad you're feeling better I see dealing with this problem as two sided. One side of it involves researching and obtaining devices that don't aggravate potentially impaired eyes or nervous system (certain problems like PWM, color spectrum and blue light can be quantified and potentially investigated), and the other being that some "health" changes may improve your tolerance for visual issues. To give an analogy even if you could improve your skin, you wouldn't stick a burning cigarette on your hand for 12 hours a day

                                              23 days later

                                              ryans Just wondering if this is a Doctor that Dr. Debby Feinberg trained (see here for those Doctors)?

                                              I had not updated on the second part of the eye examination by the neuro-optometrist. It consisted of tests I had never taken before, such as following targets / reading a text while having my eyes tracked by a camera, testing my peripheral vision, etc. My results were within the norm. As a term of comparison, I was shown how different the test results are for patients who have undergone concussions, traumatic brain injuries, ischemia, etc., or suffer of Parkinson disease. I was diagnosed only with esophoria.

                                                15 days later

                                                Fenkins

                                                Actually it's not the screens which are inferior, it's the way the hardware developers program the video card to output the image to the display. In order for the marketers to be able to claim that their particular phone or laptop shows billions (10 bit) of colors, the developers have programmed the video card to flip the colors of the individual pixels rapidly from one color to another, to simulate the color in between. Yes, the brain will be fooled and does not even see the flickering at all, but the eyes will strain from the flickering nevertheless.

                                                Have you noticed how the rise of the dark theme craze conincided with the rise of eye straining devices? Long time I didn't undestand why people preferred dark theme so much, until I upgraded from my 2013 MBP to 2019 MBP in 2020. After 2 days of using it I felt that my eyes started to hurt every time I used it. I noticed that the pain started even after a minute of using it. That's how I found ledstrain.org. Eventually I found SwitchResX and switched from "Billions of colors" to "Millions of colors", and switched to sRGB, and used f.lux, and applied matte screen protector. After that it was a lot more usable but not so much as for example my HP Elitebook 820 G3 which gives me zero problems with eyes. Now I am back on my trusty 2013 MBP because the HP was too slow.

                                                By the way, you can make the same screen which previously did not affect your eyes at all, make your eyeballs feel they are burning from behind by attaching the display to a video card which employs temporal dithering. And why it happens? It's to impress you with wider color range, because if two screens are side by side in the store and the rep says "this one is capable of showing more colors and costs the same", which one would you pick? I myself cannot distinguish between millions of colors and billions of colors, without looking the same image side by side but I can distinguish which one uses temporal dithering without any reference in just a few seconds.

                                                    Interesting that some report that patching "reduces" the symptoms. For me, the symptoms are completely gone if I put a black tape on my non-dominant eye glass.

                                                    For me it seems that temporal dithering, PWM and possible other source of flicker confuses my stereo visioin, causes my eyes to work too hard, which then causes the strain and the resulting bloodshot eyes. I have no other symptoms than bloodshot eyes.

                                                    And I have now only the Lenovo x280 with ditherig.exe which cause no strain even with two eyes. All other devices, like 10 year old TV which was previously fine, cause strain if I look with both eyes. This started suddenly last February. Before that I was only sensitive to PWM and most modern laptop screens with temporal dithering.

                                                    henno

                                                    So, you're the advocate that the whole problem (or most of it) is linked to modern gpus and dithering usage ?

                                                    I'm actually leaning more and more towards this also. Cause with my phones, I had perfectly working devices that became almost unusable after a random software update that has probably impacted gpu drivers.

                                                    But I still think there is also a hardware issue with some screens. Cause for example, had no problem with a laptop, a msi ge62vr 6rf apache pro from 2016. But when I used it with some monitors like a cheap viewsonic, or even the well known benq xl2411P, I had pretty bad eye strain.

                                                    I'm pretty certain there are multiple culprits there but I agree the main culprit is probably linked to the gpus. I've noticed I feel relief whan I uninstall intel and nvidia gpus on my laptop for example.

                                                    • AGI likes this.

                                                      If patching works, does it mean we have an underlying problem with our binocular vision ? Wouldn't it be weird that we had to wait for some new technology screens (possibly) to discover this ?

                                                        8 days later

                                                        John615 I found out something new (to me) and unexpected. Based on the test you suggested, I thought my dominant eye was the right one and maybe that diagnosis was correct, but not at near. An optometrist assessed that at near my left eye is the dominant one. He made me wear goggles with a lens orange and the other green - not sure what the test is called. He said it is not uncommon that people have one eye dominant at near and the other at distance. This is really surprising as in general any part on the left side of my body is weaker than its right counterpart.

                                                            Liberator005

                                                            It just does mean that if patching works you have a problem with your binocular vision. Or if you only patch one eye and you would have the problem again if you switch to the other eye it could also indicate that you have another issue.

                                                              dev