Apple Eye Strain Survey
This form is designed for Apple users who have specific eye strain issues with iPhones, iPads, and Macs. Some potential causes for this eye strain may be PWM, Temporal Dithering, LCD Inversion, or some other unknown issue. The goal of this survey is to gather data on these issues and potentially identify a solution.  
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Which device(s) do you primarily have trouble with?
Which iPhones cause eye strain for you?
Which iPads cause eye strain for you?
Which Macs cause eye strain for you?
What symptoms do problematic devices usually cause for you?
If you'd like, please elaborate on your usual symptoms here:
How long does it usually take for you to start developing symptoms while using a problematic device?
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How long do your symptoms usually persist after using a problematic device?
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How long have you had this issue with problematic devices?
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Roughly, how much screen time do you have per day?
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Do you use eye drops? If so, do they provide any relief?
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Do you use any kind of filtered glasses (Gunnar, FL-41, Polarized Lenses, etc)? If so, do they provide any relief?
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Do you use any screen filters (Matte, Glare prevention, etc)? If so, do they provide any relief?
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Do you use True Tone or any other kind of blue light prevention software (Like Flux)?  If so, does it provide any relief?
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At what brightness level(s) do you generally notice eye strain?
Have you contacted Apple about this issue? If so, what was their response?
Any final comments?
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