See also: IRC log
<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?
<AWK> +AWK
<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
<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
<JohnRochford> Srini, I apologize I could not document your comments. It was briefly very noisy in my office.
<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
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