1. A computer implemented method to create, display, and evaluate, a test for colorblindness, the method comprising: supplying a test apparatus comprising a visual display device in communication with a computing device comprising a programmable processor, a computer readable medium, instructions encoded in said computer readable medium, a plurality of test images encoded in said computer readable medium, a plurality of nominal test image responses encoded in said computer readable medium, wherein a nominal test image response is associated with each of said plurality of test images, a low likelihood of colorblindness threshold encoded in said computer readable medium, and a high likelihood of colorblindness threshold encoded in said computer readable medium; displaying by said programmable processor using said visual display device an (i)th test image, wherein (i) is initially set to 1, and wherein said (i)th test image comprises one of said plurality of test images; receiving by said programmable processor an (i)th test subject response associated with said (i)th test image; comparing by said programmable processor said (i)th test subject response with an (i)th nominal test image response, wherein said (i)th nominal test image response is associated with said (i)th test image, and wherein said (i)th nominal test image response comprises one of said plurality of nominal test image responses; determining by said programmable processor an (i)th likelihood of test subject colorblindness based upon said comparison between said (i)th test subject response and said (i)th nominal test image response; operative if said (i)th likelihood of test subject colorblindness is greater than said low likelihood of colorblindness threshold, and if said (i)th likelihood of test subject colorblindness is less than said high likelihood of colorblindness threshold, selecting by said programmable processor an (i+1)th test image based upon said comparison between said (i)th test subject response and said (i)th nominal test image response, wherein said (i+1)th test image comprises one of said plurality of test images; operative if said (i)th likelihood of test subject colorblindness is less than or equal to said low likelihood of colorblindness threshold, ending said colorblindness test and generating by said programmable processor test results reciting a low likelihood of test subject colorblindness; and operative if said (i)th likelihood of test subject colorblindness is greater than or equal to said high likelihood of colorblindness threshold, ending said colorblindness test and generating by said programmable processor test results reciting a high likelihood of test subject colorblindness.