ryans I haven't used the cf. Lumen in a while. I do use the blue light filter on the phone. It does give me a bit more headache than not using it. The experience is more pleasurable though overall when I am using it.

My eyes just hate the blue/deep white light. My eyes fight it.

    Wrightpt1

    Wrightpt1 Im considering a 5k monitor. Ohh the price tho.

    I was considering a 4/5k monitor for myself but I think the issue is that under Windows/Linux the scaling isn't as good, and it's hard to use a 4k monitor at 100% scaling.

    I'm thinking of a Dell UP3017 (30" 2560x1600 IPS) for myself after I sort some stuff out. On a plus side it might also be RGB backlit, so not blue LED.

          JTL great input. I have seen an LG and a Dell.

          It has been a while but from what I remember for me the white light from an LG monitor is diff ftom the white light from a quantum monitor. But the 5k may be worth it in my case

              Wrightpt1 I do have some recomandations based on what you described.

              First I recomend installing F.lux and setting it up to 4100k during the day on all your devices(desktop, laptop).

              Second and most importantly I think you should either use scaling like I use or you could increase all fonts by 25%. I use scaling in Windows at 125% combined with increasing font in all my editor software I use. I do have better than 20/20 vision and I do this to avoid my eyes getting tired after 8 hours of work. Also my screen is flicker free(Dell u2414h) and I am also using paper mode from the monitor which reduces blue light further.

              Another very important tool that I use is EyeLeo. It's a small software tool that reminds you to make different exercises for the eyes from time to time. I use this to get rid of sand in the eye sensation from staring into the screen too long without blinking. Us humans do not blink regulary when using computer screens for some reason.

              And even if you do not get a migraine from PWM when using your S8 in the dark that doesn't mean your eyes are not negatively affected by this type of flicker. You should reduce the time you spend reading on the S8 in dark environments because the eyes will be strained from all the microcontractions.

                There was a spambot posting phone advertisements in several threads, their posts have been removed.

                10 days later

                KM I recently bought iPhone 8, after trying the 6 and 6s of my mother's ans sisters (it was good, not sure what version of iOs), just to find out that it is unusable. The pain is so bad, similar to what I have experienced with Macbook Pro. I will sell the phone, but I need a new one because my Lumia is almost dead... Do you think buying Oneplus 3T is a great idea? How about 5T or 5? Do you think it is worth trying + installing the Paranoid?

                Are you a sufferer of PWM? PWM does not affect me, because I can use my old acer which has a lot of flicker.

                    randomboolean I have no idea about the OnePlus 5 or 5T. The 3T should have the same display as the 3. But the only thing I can say is the 3 still works for me. I suffer from PWM and must stay out of the PWM range. If you don't have any problems with PWM: even better, so you can use the phone at low brightness and save more battery. I'd install Paranoid Android (currently 7.3.1) because it fixes a serious WiFi vulnerability (called KRACK) that the last good version of OxygenOS (4.0.3) still has. Actually probably all of us who use old Android versions that got no updates recently have that vulnerability.

                        KM I just called one of local carriers. They have a very good 14 days return policy (no one else has). If you order the phone (it is not applicable for iphones), do not damage the packing, do not insert the SIM and do not login to Google account, you can return during 14-days period. But you had to order the phone via eshop and mark "curier" as delivery option, because this way you could not possibly had a chance to look at the phone and you have to be able to return it if you didn't like the design for example. I am going to try this phone out and let you know what is the outcome. It comes with android 6 preinstalled and as I understand it was ok for your eyes? Also I am not allowed to enter the phone and login to google, so I guess I will have to stare at the "HELLO screen" and I am not sure if the HELLO screen has the same rendering options as the other OS screens like desktop, etc. I hope it does.

                        So guys if you want to test the phones out without breaking the bank, call your carriers or shops and ask about return policy, maybe they will offer something similar.

                        • KM replied to this.

                            randomboolean Android 6 on the OP 3 was good, but the setup screen has auto brightness enabled. So low environment brightness means 240 Hz PWM. I'm not sure anymore, but I think you could skip any Google setup and leave the setup screen. It should be possible to reset anything to factory defaults later. They probably would never know. Just don't login to Google ever. It might leave some data on the internal memory (/sdcard) which makes the setup ask for the previous Google account's password. Although I think this behavior was introduced in Android 7.0, better take care.

                                KM Ok, I am currently ordering the phone. I called the carrier once again and asked the other person for the same info. I made aware of my problem and they were totally ok for me to test the phone. They said that it is possible to skip Google login or HELLO screen and it is OK to turn on WIFI, So I will be testing out the phone in the comming days and will report here my findings. 🙂

                                • KM likes this.

                                  My M8 has been giving me some trouble lately, has any one tried the Huawei P10?
                                  the display is: IPS-NEO LCD, not sure about the pmw though

                                  After testing Oneplus 3t for 2 days I could say it is unusable for me. I tried all of the settings suggested by KM, but they didn't help. It is much much better than iPhone, but still gives me blurry vision. Going to return it and find another one. The next one to check - Samsung S8. We do have those "lounges" where you can sit, chill and try out samsung phones, VR glasses, etc. So perfect for me, I can sit there as much as I want. 🙂

                                  By the way my work phone is MEIZU M1 metal. Well it's android 5 and almost perfect for my eyes. But the phone itself is very poor. It does not have Google play store out of the box and you cannot uninstall all that chinese bloatware. Even thiugh everything is turned off - I constantly get random chinese notifications, especially during the night. Also it is very very slow, non-responsive, when someone calls it does not show the caller name, etc. So it is not a phone for long-term using, but will be good enough while I found a fast modern phone which is also good for the eyes.

                                    19 days later

                                    randomboolean There's the Samsung S9 coming out too, I'm going to try it! Do you think your problem is with newer versions of Android? I haven't been able to use past Android 6, but I don't know if that's a coincidence. Really would love a new phone, mine takes seconds to respond to taps.

                                        Gurm Has any particular iOS device worked well for you?

                                          Gurm Did you wind up keeping the iPhone 7+?

                                            I ended up getting a newer HTC One M8. It's only a stopgap measure, and I have to reinstall it on the regular as just the weight of my normal daily driver software kills it slowly.

                                            ryans

                                            As I am in urgent need for a new phone (my old lumia 930 barelly last 2-3 hours) I have been testing loads of phones during the last month. So far I can tell that I am affected by both screen and software. LTPS IPS screens are the best for me and if I use it with Android 5 - no eye strain. Android 6, 7 makes my eye strain but on LTPS IPS screens gives less strain and my eyes heals very fast 1-2 days afterwards. In comparison other non-LPS screens makes my eyes strain a lot and the healing period is 3-4 days. So I assume I have eliminated "bad screen" factor with LTPS IPS screens, thus leaving the only factor - Android. Though if the Android 5 is used, I can look at any screen.

                                            My last test was with BQ AQUARIS X5 PLUS as suggested by one of the forum users. It came used and with Android 7 preinstalled. I unlocked and rooted the phone, installed Android 6.0.1 and installed cf.lumen. Even though the app makes difference, my eyes are still strained.

                                            This is the list of the phone which I tested:
                                            - LUMIA 930 (Windows phone 8 and 10) - My current phone for ~4 years. Absoluitely no eye strain, very good screen. Unfortunately the battery is almost dead, the screen is shattered and it started to feel very sdlow, thus I need to change;
                                            - MEIZU M1 METAL - (Android 5) My ex-work phone with LTPS IPS screen. Gives no eye strain, but unfortunately the micrphone stopped working and I had
                                            - iPhone 8 (iOs 10 and 11) - absolutely worst phone ever for my eyes. I healed for 1-2 weeks, it gives me headaches, eye strain, blurry eyes, nausea, dizzynes, I could not work for a couple of days.
                                            - Oneplus 3t (Android 6) - Better than iPhone, but still bad for the eyes. Eye strain, irritation, headaches;
                                            - XPERIA XZ (Android 6) - Better than the first ones, but still gives eye strain after 10-20 minutes, which get worse if the phone is used for longer periods;
                                            - HUAWEI MATE 10 LITE (Android 7) - Comparable to XPERIA XZ, i tested for the whole day;
                                            - SAMSUNG GALAXY S4 (not sure which android, I think 5) - I had this phone for 2 weeks and it gave no eye strain. It was my work phone. The screen was shattered and the phone lagged a lot, so they changed to Meizu.
                                            - BQ AQUARIS X5 PLUS - (Android 6.0.1 and 7) the screen is so much better than any other phones which I tested, but it still gives eye strain after using it for 20-30 minutes. The phone was rooted and I tried cf.lumen.
                                            - HUAWEI P10 LITE (Android 7) - It has LTPS IPS screen. I had a chance to test it for 40 minutes and I can say it gives similar eye strain to BQ AQUARIS, better than any other phone, but still considerable strain;
                                            - Samsung galaxy note 8 - (not sure if android 7 or 8) the phopne gives me eye strain but I could compare the strain with LTPS IPS screens. They also have a very good return policy - you can buy galaxy note, even remove the covers, use it for 2 weeks and return if you didn't like it.

                                            As I am desperate I think I will settle down with some 2015's flagman with Android 5 (maybe will buy 2 of the phones) and will continue search for a modern phone. What I am going to try next is LG G4 (unfortunately has no fingerprint scanner) and if that does not work Huawei Honor 7 is the next one. As for the Samsung Galaxy s9 - I'm not sure if going to test it. Maybe I will wait for galaxy note 9...

                                            Even though this "fight" takes a lot of time, I remain positive and look at the birght side. I found out a lot of good dealers in my country who allows returning phones during 14 days period. I also shipped phones from UK and Germany with 30 days "no questions asked" return policies. So at least I can test numerous devices without paying anything or just few Euros for the shipping. Also as I am so close to choosing the right phone I started looking at older laptops.

                                            Back to late 2014 and early 2015 I worked at the bank and they gave me Lenovo T440s laptop with TN screen. Even though everyone says the screen is bad, it was very very good for my eyes. Back then I did not know I have the problem, but if the screen was bad it would have caused me the eye. So I found a barelly used X1 carbon gen 3 from year 2015 with TN screen. It comes with Windows 10. Also Lenovo laptops tend to be very long lasting so a 3 year old laptop should not be a problem. I think Windows 10 does not cause me eye strain as I had three older laptops (Acer 5650g, Samsung ativ book 9) with windows 10 anniversary edition and "good screens" and I had absolutely no eye strain. I checked the intel driver on one of them - it was from year 2016. I will let you know my findings about this phone in other post.

                                              dev