Wednesday, September 12, 2012

Google Maps Helps Colorblind See Traffic

I ran across an article from a couple years ago on the Search Engine Roundtable website.  Google Maps traffic indicators were initially difficult to see for color deficient users (especially those with a red/green color deficiency, the most common type).  Here is a shot of the change they made:

See the full article here.  What do you think?  Is it enough of a change for your eyes?  Do you have other suggestions?

Sunday, September 9, 2012

Guest Post: Color Correction System

See guest post below.  I have not reviewed this system and don't know much about it, but I see it as potentially of interest to readers.  Let me know what you think.


Color blindness occurs in individuals when the cones in the eyes have problems differentiating between colors. The condition affects approximately 1 in 10 men and very few women. Those with color blindness don’t have to suffer with the condition for life. It is possible to see colors using the ColorCorrection System developed by Dr. Thomas Azman. If you are unsure of whether or not you experience colorblindness at a slight or moderate level, you can check using the free colorblindness text located at

The system includes filters and tests that are only available at the Azman Eye Care Specialists near Baltimore, MD. Since the procedure is limited in availability, it isn’t uncommon for Dr. Azman to travel all over the world to give people the opportunity to have a completely different view of the world. Many people also travel to see him to receive treatment using his ColorCorrection System.

Before you can receive treatment using the ColorCorrection System you need to have an evaluation and exam which can take anywhere from four to six hours. The process is done in a single visit. Dr. Azman looks at the information gathered during your exam, and he designs filters that are meant to be worn as corrective or contact lenses. These modify the way color goes into your eyes and allows you to see the world in color.

Colorblindness can be a hindrance for working in certain fields for safety reasons. These careers include railroad engineers, military, pilots, those working with color coded wires for electricity and firefighters. Dr. Azman’s ColorCorrection System makes it possible to the pass the Ishihara Color Blind Test, which is required to become employed in many of these occupations.

Thursday, February 9, 2012

Let There Be Light: Colorblind-Friendly Traffic Signal

According to a recent news report from the Mainichi Daily News, a university professor in Japan has developed prototype traffic signal LEDs that enable persons with red-green colorblindness to distinguish between red and yellow indications. Field tests are underway at several locations, including Fukuoka and Tokyo.

As seen in the photo, the red indication will include an "X" that doesn't show up predominantly to users with regular vision when they get close to the signal, but is easily distinguishable by red-green colorblind drivers.

We've discussed traffic signals quite a bit on Grey Means Go, including this recent post about a prototype for different-shaped traffic signals, and some actual installations of innovative treatments in Kentucky.

What do you think of the "X" red light in Japan? Helpful without distracting other drivers? Any concerns?