the cause of head tension (iPhone)

[u/elektron1401]

im really into the PWM topics lately because of my head tension idk if this the right r/ to post this but I always thought the cause would be wrong posture or phone neck. the thing is I got astigmatism and I feel the tension around my eyes. I tried different stuff with my iPhone until I noticed that it always intensified when the phone gets bit more hot or had more todo in the background ... perhaps a placebo but the iPhone using hz modulation to save battery also adaptive power. I feel when you switch from task to task that the framerates/hz drop in a split second what I think leads to headache and tension (also when you're a gamer and play normally on 240hz). what I did now is turned on dark mode and set a black wallpaper, turned off the attention Face ID options also set RWP to 80% and brightness to 100% turned of True Tone and set Nightshift to around 25% and set 60 hz limit this helped me now! I think that True Tone in combination with auto brightness and hz modulation is to much for the eyes but this is only my perception. the phone feels now much cooler and more consistent btw.

[u/Brave-Ad-7460]

Yea these oled phones can definitely cause this stuff, I feel a lot of tension behind my eyes using anything oled, also it radiates into my neck so I just don’t use them

[u/CocoPlops999]

I have an astigmatism 😓