Re: Acuity for 400% zoom

Dear Shawn,
We all read differently. You bring up a good research point.
I am right eyed. My right eye is so much better than the left that I barely
know how to read with my left. Also, only parts of my macula can actually
see well enough to read. So, I bounce my head as I read and only pick up a
few in a visual capture.

My visual acuity is 20/80. So 400% is nice. I do move my head a few times
to read a line. I compensate with a little narrower reading line (increased
margins) and scroll vertically a little more. Overall, I do a lot less
thinking about scrolling and more thinking about the content.

Wayne

On Mon, May 28, 2018 at 1:20 PM Shawn Henry <shawn@w3.org> wrote:

> Hi LVTF folks,
>
> Generally at what acuity -- 20/??? -- would a person be able to read well
> at 400% zoom, but not under 400% zoom?
> (I know "It depends." on a whole bunch of factors! I'm wanting a
> reasonable number *generally*.)
>
> Currently I have 20/500. I'd like more perspectives.
>
> Context: The persona quote here:
> <
> https://w3c.github.io/wai-intro-wcag/standards-guidelines/wcag/new-in-21/#1410-reflow-aa
> >
> says:
> [[
> Problem: "It's nearly impossible to read text if I have to scroll right
> and left to read each line. It's disorienting and I lose my place. It makes
> it hard to understand what I'm reading."
> Works well: "I increase the text size 400% and it reflowed within the
> width of the window. I can read it easily without scrolling back and forth."
> ]]
>
> It's attributed to: "Parent with low vision – 20/500"
>
> Thanks for input.
>
> Best,
> ~Shawn
>
>