Any screen with PWM significantly higher than 1 kHz no longer poses any special problems, even for people who are sensitive to this and have a fast nervous system.
You need to pay attention only to the flickering, which is clearly visible on the standard "pencil" test or on the camera - if at working and minimum brightness no pencil phases or brightness changes are visible on the camera, the screen as a whole is sufficient from the point of view of safety for the nervous system.
I personally (and I am very sensitive to this topic) do not experience any particular problems with screens where the flicker frequency exceeds 1 kHz with a minimum amplitude. Already at 2 kHz everything is generally quite good. If you believe the data from the review (and there is always doubt about this data), then 14 kHz (if, of course, you believe the author, who assures that there is no difference with another Apple model in terms of screen and did not do tests) is more than sufficient PWM frequency so that no one will notice the presence of flickering even with peripheral vision.
The problem with AMOLED screens is precisely that due to very rapid burnout (and as a consequence - rapid destabilization of color rendition accuracy, and it is already unimportant after hardware calibrations, as many local reviews show, if you believe them), there It is physically impossible to increase the duty cycle of the pulses - burnout will only accelerate. Low flicker frequency (low duty cycle) is intended to limit the destructive tendencies of OLED at operating brightness levels, where color accuracy is also worse for OLED than at high brightness. Any attempts to increase the PWM frequency on AMOLED lead to problems - clearly visible banding (especially in dynamics), which is a consequence of deterioration in color depth (details), as well as a reduction in the resource of organic LEDs, which are significantly inferior to single-color IPS/VA backlighting.
MiniLED, for that matter, has a bigger problem with ghosting around objects at zone boundaries than with the switching frequency. Some people write in reviews that on monitors (where there is a manual switch off of the multi-zone backlight to the level of a regular single-zone), they cannot withstand these defects and switch to single-zone backlight, despite a significant drop in contrast in other areas of the screen where there are no luminous pixels. So miniLED is a crutch in an attempt to emulate AMOLED in contrast (black level) using previously unsuitable means.
And so far there is no hope for microLED, which still cannot be launched into series on large screens. If it also has low-frequency PWM (due to the glow of each subpixel independently and therefore problems with the resource due to its small size), then there is no point in waiting for it either. Understanding this problem, manufacturers do not want to produce flickering screens that offer nothing compared to AMOLED, which is why microLED still does not exist, despite Apple's attempts to make them on its own.
So today only IPS/VA with sufficient contrast (from 1500:1) are comfortable for the eyes. And miniLED is a crutch to hold out until the "holy grail" that everyone still believes in - microLED.
AMOLED is good in dynamic pictures - in video and partly in dynamic games. For working with a static image, this is an extremely unsuccessful technology today.
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