If you're getting dizzy using PROLED MacBook Pro, you are not alone

Some MacBook Pro users are experiencing eye strain, headaches, and other health issues due to a feature called pulse width modulation, or PWM. This technology is used to control the brightness and color of the screen, but it can cause flickering that may be problematic for certain individuals. PWM operates at a frequency of 240Hz on the MacBook Pro, with a 56% flicker amplitude.

This is higher than standard screen refresh rates, but still lower than some other displays. The health impacts from strobing lights can include flicker vertigo, photosensitive epilepsy, and general photosensitivity. Flicker vertigo is caused by refresh rates between 1Hz and 20Hz and can lead to disorientation, nausea, and rapid eye movement.

Photosensitive epilepsy is a more severe condition, where strobing lights can trigger seizures in susceptible individuals. Photosensitivity can also aggravate other health conditions, such as migraines, traumatic brain injury symptoms, and certain types of headaches. While not everyone is affected by strobing lights, those who are prone to these health issues may experience discomfort or more serious problems.

The issue has been reported by AppleGenius Bar technicians and retailers, with some customers returning the hardware. Although not everyone is impacted, it's important to be aware of the potential risks, especially for those with existing health conditions or who are already sensitive to light.