Minutes: Low Vision Taskforce 6 Jan 2016

06 Jan 2016

See also: IRC log <http://www.w3.org/2016/01/06-lvtf-irc>
Attendees
PresentLaura, Shawn, Alan, Jim, John, Srini, Wayne, Andrew, Erich,
jon_avila, AWK, Katie, Haritos-SheaRegretsChairAndrewK, JimAScribeJohn,
allanj
Contents

   - Topics <http://www.w3.org/2016/01/06-lvtf-minutes.html#agenda>
      1. review draft of Document Overview and Cause and Effects of Low
      Vision <http://www.w3.org/2016/01/06-lvtf-minutes.html#item01>
      2. Review of Document Overview
      <http://www.w3.org/2016/01/06-lvtf-minutes.html#item02>
      3. Review Color Perception
      <http://www.w3.org/2016/01/06-lvtf-minutes.html#item03>
      4. review light and contrast sensitivity
      <http://www.w3.org/2016/01/06-lvtf-minutes.html#item04>
   - Summary of Action Items
   <http://www.w3.org/2016/01/06-lvtf-minutes.html#ActionSummary>
   - Summary of Resolutions
   <http://www.w3.org/2016/01/06-lvtf-minutes.html#ResolutionSummary>

------------------------------

<allanj> ​Agenda+ review draft of Light and Contrast Sensitivity

<allanj> https://github.com/w3c/low-vision-a11y-tf/issues/4

<allanj>
http://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Overview_of_Low_Vision#Color_Perception

<allanj>
https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Overview_of_Low_Vision#Overview_of_Low_Vision

<Alan_S> Does anyone have the webex password?

<allanj> ​Agenda+ review draft of Light and Contrast Sensitivity

<JohnRochford> Info about me =
http://profiles.umassmed.edu/profiles/display/132901

<allanj> Jim+

<allanj> Wayne+

<Srinivasu> Srini+

<Srinivasu> What's the WebEx password please?

<Alan_S> thanks for the password

<Srinivasu> Thank you

<allanj> scribe: John

<JohnRochford> WebEx shortcut keys =
http://www.cisco.com/c/en/us/td/docs/collaboration/CWMS/1_5/User_Guide_Test/User_Guide_Test_chapter_01101.html

<jon_avila> what is the WebEx password?
review draft of Document Overview and Cause and Effects of Low Vision

<AWK> +AWK
Review of Document Overview

<shawn>
https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Overview_of_Low_Vision#Overview_of_Low_Vision

<JohnRochford> Shawn: Be sure to refresh document. Included general info
that is currently in lower sectoins, but I think would be good to bring up
higher level.

<JohnRochford> Wayne: I have a WHO estimate that's relevant, but it lumps
correctable and uncorrectable together.

<shawn> agree with Wayne that WHO includes correctable & not correctable -
and more interesting is not correctable

<JohnRochford> Wayne: I have another stat for U.S. population.

<JohnRochford> Wayne: U.S. population stat should be representative of most
countries.

<JohnRochford> Wayne: All should be considered as having low vision.

<JohnRochford> Wayne: WHO says 3 million U.S. population has corrected low
vision, 11 million uncorrected.

<JohnRochford> Shawn: I just added a note, so please refresh doc.

<laura> Research Wiki Page:
https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Research

<JohnRochford> Jim: Medicare may have a definition. I will check.

<Ryladog> WHO also is a good pleace to get definitions

<JohnRochford> Shawn: Low vision definition is not clear cut. Different
people consider it differently. Is the info the right amount or not?

<JohnRochford> AWK: It will be difficult to reach consensus on the
definition. I like what you said in the last sentence.

<JohnRochford> AWK: Suggested one wording change.

<JohnRochford> Wayne: I will send editorial suggestions.

<JohnRochford> Shawn: I love editorial suggestions.

<JohnRochford> Shawn: Just changed doc as AWK suggested.

<allanj> close item 2

<shawn>
https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Overview_of_Low_Vision#Color_Perception

<allanj> Open Item 1
Review Color Perception

<AWK> in the color section, do we have rights to the images?

<JohnRochford> John: I offer to copy edit for Shawn and Laura's docs.

<JohnRochford> Shawn: We need to post an acknowledgement of the images.

<JohnRochford> AWK: Permission to use the images should be verified and
documented.

<JohnRochford> Shawn: Agrees with AWK.

<JohnRochford> Laura: I could create my own images.

<JohnRochford> Shawn: If you made one, perhaps it could take up less space?

<JohnRochford> Shawn: Perhaps they could all be on the same line or stacked.

<JohnRochford> Laura: Okay.

<JohnRochford> Jim: Would be useful to have some numbers of
color-perception prevalence.

<JohnRochford> Wayne: Those numbers should be easier to find than others.

<JohnRochford> Jim: Do we want to tease out gender differences or use a
general number?

<JohnRochford> Shawn: We may want to include both.

<JohnRochford> Jon: Just because you have a color perception problem means
you have low vision.

<JohnRochford> Correction: does not mean

<allanj> http://www.colour-blindness.com/general/prevalence/

<JohnRochford> Wayne: Perhaps we could say "Loss of color perception alone
does not mean low vision."

<JohnRochford> Jon: Certain colors can be difficult to perceive by people
with low vision.

<JohnRochford> AWK: If you have a color-perception deficit, does that mean
a brain interpretation issue, or a physical issue such as low light.

<Srinivasu> +1 few colors doesn't go well. due to gradiant of colors

<JohnRochford> ?

<JohnRochford> Shawn: Maybe we should talk about broad considerations
rather than have specific definitions.

<allanj> https://nei.nih.gov/health/color_blindness/facts_about - Color
blindness can make it difficult to read color-coded information such as bar
graphs and pie charts.

<JohnRochford> AWK: Maybe we should let it ride for a bit and see how it
progresses.

<JohnRochford> Shawn: It would be the section in the overview to be quite
short.

<JohnRochford> Correction: It may be

<JohnRochford> Wayne: It's important to talk about a difference in
brightness rather than a difference in color perception.

<JohnRochford> Jon: Luminosity is important: brightness rather than color.

<JohnRochford> Wayne (Answering question from Jim): Yes, I too am talking
about luminosity.

<JohnRochford> Jim: Welcome Katie.

<JohnRochford> Jim: Any other closing thoughts?

<allanj> luminosity/brightness

<JohnRochford> Wayne: One other thing: You can't get legibility results in
background color. It's a readability thing, not a legibility thing.

<JohnRochford> Alan: I have a question about inverse contrast. Any thoughts
on describing that?

<JohnRochford> Jon: Inverse contrast has issues such as the contrast may
not be improved with an inverse, and images may even look worse.

<shawn> JohnR?: inverse with black background reduces overall luminosity &
glare ... [lots of problems with it] ... platform level so easy

<JohnRochford> Alan: Glare is also a consideration.

<JohnRochford> Wayne: Those aspects, especially the glare issue, was
researched pretty well in the '90s.

<JohnRochford> Alan: Polarity may be the issue rather than glare.

<allanj> open next item

<shawn>
https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Overview_of_Low_Vision#Light_and_Contrast_Sensitivity

<JohnRochford> Srini, I apologize I could not document your comments. It
was briefly very noisy in my office.
review light and contrast sensitivity

<shawn>
https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Overview_of_Low_Vision#Light_and_Contrast_Sensitivity

<JohnRochford> AWK: The Wiki version should be considered our current
version.

<JohnRochford> Wayne: Shawn's idea that some content should be moved to
other places is a good one. I may have to add a case study.

<shawn> [ /me closes GitHub issue with pointer to wiki ]

<JohnRochford> John: Pause as people read document.

<JohnRochford> AWK: Is your talk about contrast ratio related to
brightness, discomfort, and readability? If so, perhaps we should bring it
up again in that section.

<JohnRochford> Note: That question was directed to Wayne.

<JohnRochford> Wayne: Yes, that would be very good.

<Srinivasu> No problem John. Here are my comments. These days often
designers tend to use transparent colors / images as background and in
addition to that, they use a bit low contrast colors like gray (though
passes contrast requirements) but difficult to read as user.

<Srinivasu> My second comment was about underline / some styling for links.
I think I agree that we need to ensure those styling / understlines do have
enough contrast too. In fact, styling / underline helps users with low
vision and cognitive than others.

<JohnRochford> Wayne (to AWK): Yes, I can work in brightness and high
contrast and/or legibility.

<Zakim> shawn, you wanted to say explain light & contrast sensitivity in
this section; and save user requirements for other section:

<JohnRochford> Shawn: We are looking at these sections in isolation and not
considering the big picture. Example: We should focus on functional
limitations without solutions.

<JohnRochford> Shawn: Functional limitations should focus on just that:
functional limitations.

<JohnRochford> Shawn: Perhaps physical conditions should be accompanied by
their functional limitations.

<JohnRochford> Wayne: Generally, determining factor in reduced visual
acuity is contrast.

<JohnRochford> Wayne: Contrast and brightness are completely intertwined.

<JohnRochford> Wayne: I will make clear which functional limitations are
impacted by contrast and brightness.

<allanj> scribe: allanj

<shawn> right - light and contrast sensitivey almost opposite

<JohnRochford> I mean "Jim, I have to go."

<JohnRochford> Bye everyone.

<shawn> light & contrast sensitivity not always assocoated with visual
acuity?

<laura> bye

Title: Low Vision Taskforce Teleconference
Summary of Action Items Summary of Resolutions [End of minutes]

-- 
Jim Allan, Accessibility Coordinator
Texas School for the Blind and Visually Impaired
1100 W. 45th St., Austin, Texas 78756
voice 512.206.9315    fax: 512.206.9264  http://www.tsbvi.edu/
"We shape our tools and thereafter our tools shape us." McLuhan, 1964