Re: LVTF question

Lisa,
Thank you for bringing this up. Photophobia is a widespread  problem among
people with blind spots (TSBVI). This effects people with macular
degeneration as well as congenital retina damage like mine.

We addressed the text issue with the color SC (part c of #78). Images are
just a pain (literally) and I just thought we could not address them now.
It would involve serious element level intervention.

Hardware is an extremely  poor solution to this problem. I know. I do it
when bright images are just too painful. But  hardware dimming cuts
brightness globally even in places where diminished brightness is in
effect. However, a software solution would require new assistive
technology. So, a solution at the 2.1 level is not possible.

Wayne

On Tue, Feb 14, 2017 at 8:44 AM, Gregg C Vanderheiden <greggvan@umd.edu>
wrote:

> This looks like the animation SC  - which prevents all of these if they
> last more than a few seconds.    Prohibiting them all together is a problem
> in that the are often used to bring attention to important things that
> would otherwise be missed — and also used to provide cognitive assistance
>  (how to do things etc.)
>
> The time limit keeps them from preventing use — even if they might delay
> it a bit for people who are so distracted that the things that are intended
> to catch their attention — would trap it if they continued.
>
>
> Gregg
>
>
>
> Gregg C Vanderheiden
> greggvan@umd.edu
>
>
>
> On Feb 14, 2017, at 11:24 AM, lisa.seeman <lisa.seeman@zoho.com> wrote:
>
> That helps, but the worst thing is moving content or  a flashing light or
> moving content (especially that has a higher contrast)
> The speed is not an issue and the size of the screen is also not as big an
> issue as for epilepsy
>
> I am just going from what I know from my daughter who also has a focusing
> issue, so it might need better research
> What I do know is content with any flashing (what ever the size) or moving
> will  hurt her
>
> All the best
>
> Lisa Seeman
>
> LinkedIn <http://il.linkedin.com/in/lisaseeman/>, Twitter
> <https://twitter.com/SeemanLisa>
>
>
>
>
> ---- On Mon, 13 Feb 2017 23:59:45 +0200 *Alastair Campbell
> <acampbell@nomensa.com <acampbell@nomensa.com>>* wrote ----
>
> > I was wondering if we have a SC for severe photophobia -people who get
> pain
> > from intense light (any size) and flashing (any size)
>
> The text adaptation one covers colours of foreground/background text, and
> there is the current 2.3.1 Three Flashes, with it's threshold.
>
> They would not cover a bright image/video, or a small flashing area
> though.
>
> Is that something best dealt with at the OS/hardware level? Presumably to
> get to a website you'd have to open a browser, which has a large white
> canvas... So toning down brightness & whites would be important for general
> use.
>
>
> > There should be a semantics to mark any section of elements with
> flashing
> > moving or blinking and these of these so that they can be blocked and
> make
> > sure that low contrast can not be overridden
>
> Possibly, but if you can override it at all, you should be able to
> override it whether it has semantics or not.
>
> -Alastair
>
>
>
>
>