Ishihara Test Book 38 Plates for Color Blindness Eye Testing with Occluder
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Ishihara Test Book 38 Plates for Color Blindness Eye Testing with Occluder

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Brain Test: Are You Color Blind? (the quick test with answers)

This brain test to see if you are color blind uses music from: "Pamgaea" Kevin MacLeod ( Licensed under Creative Commons: By Attribution 3.0 ...

7 Deadly Web Design Sins You Might Be Making


Web design is a tricky subject.

People have different opinions about what constitutes good web design and what doesn’t.

Some people think your site needs to be super sleek with an up-to-date, modern design in order to get attention. Others believe that web design doesn’t really matter all that much and you just need a site that works and lets people do what they want, like Craigslist.

Both answers are right depending on which industry or business you’re talking about. But, how do you figure out what’s right for you? And, how can you make sure you’re web designer knows what they’re talking about and won’t make mistakes?

This post presents seven deadly web design sins you don’t want to make on your site . The good news is that they’re all simple principles every website should follow. So, whether you get a slick design or not, you still need to know about these design principles and how they apply to your site.

Also, you can use these principles to make sure your web designer knows what they’re doing. Just because someone is a good designer doesn’t mean they know how to design for the web. And, just because someone designs websites doesn’t mean they know how to design a site that will convert. Pay close attention to the principles presented in this post, and use them if necessary to make sure your designer designs a site that’s optimized to get the results you need.

Mistake #1: Fonts That Are Too Small

The first mistake people make is creating a site with fonts that are too small.

The reason for this is that, back in the day, most websites had small fonts. The standard was somewhere around 12 px, and nearly everyone followed that standard.

But, over time, people started to realize that 12 px fonts are hard to read online. When a screen is 24 inches from someone’s face, small fonts make it difficult...

Source: Patrick Barnaby

There is a "26" on this plate.

There is a "26" on this plate.
Image by

Can you trace a line from one "X" to the other?

Can you trace a line from one "X" to the other?
Image by

The Ishihara Color test: Full test at

The Ishihara Color test: Full test at
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Latest News

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    11/16/14 ,via WCSU

    So he made an appointment at Johns Hopkins University. "It was a brutal test because what they do is they give you 25 — I think that's the number — 25 discs." Each disc was a different color of the spectrum, from red to violet, and Milton had to put

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    10/23/14 ,via Medical Daily

    Diagnosing a color vision deficiency usually requires a series of tests using pictures of numbers subtly hidden in colored dots dubbed pseudoisochromatic testing plates. While this may be effective in identifying the presence of this visual condition

  • Australia batsman Chris Rodgers forced to withdraw from match that will trial ...

    11/07/14 ,via The Independent

    The 37-year-old was withdrawn from Victoria's team on the day of the match because his color blindness makes it difficult for him to see the pink ball. Cricket Australia moved quickly to assure Rogers his place in Australia lineup for the first test

  • World War II is focus of Veteran's Day program

    11/20/14 ,via Brush News-Tribune

    This time when he went to Chicago for his physical his color blindness was inadvertently overlooked. Once in the Navy, Treadway passed a test to serve as a motor machinist. He went to the naval base in Bremerton, Washington, and after two weeks he was 

  • Apple adopts new 'San Francisco' font for its upcoming smartwatch

    11/19/14 ,via GMA News

    "Most color blind people have difficulty distinguishing red from green. Test your app to make sure that there are no places where you use red and green as the only way to distinguish between two states or values (some image-editing software includes

Bing news feed

  • Lessons from Ferguson: racial “color-blindness” isn’t working

    11/20/14 ,via The Lamron

    Color-blindness isn’t working for America ... or any –ism for that matter. Implicit Association Tests help to uncover implicit biases so one can work to override the social desirability bias eminent in self-reporting. They work by showing our biases ...

  • A Color Blindness Test for Children

    03/08/11 ,via

    Diagnosing color blindness in children is essential to ensure alternative strategies for learning can be used at school. Photo Credit child eye image by PaulPaladin from For children who are color-blind, red, orange, yellow and green may be ...

  • Test yourself for color blindness with your cellphone

    05/31/05 ,via Engadget

    A South Korean company called NexTMobile is expanding Eye Test, their service which lets you test yourself for color blindness and color sensitivity with your cellphone to Europe this month. Especially convenient because you wouldn't want to leave ...

  • Online test for Color Blindness

    11/09/09 ,via Oye! Times

    Color Vision Deficiency, also called Colorblindness, affects 8% of boys and 0.5% of girls, or about 1 in 25 children. An affected child sees colors differently than most of his or her classmates or family members. Depending upon the type of Color Vision ...

  • Color Blindness Test by EnChroma: Find Out If You're Afflicted

    12/04/12 ,via Gizmodo

    Are you color blind? Maybe you are, maybe you aren't—but have you ever put that question to an actual test? You can, and it's very simple. What does it do? Tests your color vision. If you're color blind, it will tell you how color blind you are ...


  • Procedures for Testing Color Vision

    National Academies. 1981. 120 pages.
  • Revision and further application of the Nelda test for color blindness

    2014. 46 pages.
  • Neuropsychological Assessment

    Oxford University Press. 2014. ISBN: 0195111214,9780195111217. 1016 pages.

    Many new topics relevant to current assessment practices have been added to the 4th edition. The first eight chapters of this book present the knowledge base for understanding the principles and practice of patient-oriented, hypothesis-testing neuropsychological assessment. The last 12 chapters review nearly all tests and assessment techniques discussed in previous editions plus many new ones and recent revisions of older tests.


"Color Vision Testing Made Easy" - ColorVisionTesting ...

This on-line color vision test consists of four cards from the popular color vision test "Color Vision Testing Made Easy". Try and find a circle, star, and/or a ...

Ishihara Test for Color Blindness - Toledo Bend Reservoir

Ishihara Test What numbers do you see revealed in the patterns of dots below? I am color blind, as is about 12 - 20 percent (depending on whose figures you want to ...

Free Color Blindness Test | Color Blindness

Are you color blind? Take either of these popular, interesting, and fun color blindness tests and find out now!

Ishihara Test for Color Blindness | Color Blindness

Take the Ishihara Color Blindness Test now to find out whether or not you are color blind, and how severe your color blindness is!

Color Blindness Tests | Colblindor

Many people are looking for a possibility to test their color vision on the web. Unfortunately there aren’t many color blindness tests available online.

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