a graph or slide featuring a thoughtless jumble of dense text or objects, poor layout, hard-to-read color schemes, etc., such that comprehending the information and grasping the intended message is difficult; used to draw attention to these flaws without being overly derogatory, as in “I’ll admit this breakdown of GDP by country is a bit of an eye chart but I wanted to fit the whole world on one page”; named for the routine eye examination tool in which those being tested are required to identify increasingly inscrutable letters or symbols to gauge their visual acuity; in lieu of presenting such a chart, the reader would be well advised to spend the time crafting a graphic that is more likely to be understood