Armaignac Optometric Chart 5 meter - Innovative Visual Test for Illiterates This Armaignac Optometric Chart, manufactured by KSIPL, represents a significant advancement in the field of visual acuity testing, especially for illiterates. This innovative test allows for the measurement of angular visual acuity at a distance of 5 meters. Designed to be wall-mounted, it is ideal for long-distance vision tests. The Armaignac Optometric Chart uses optotypes such as tridents or Raskin's E, whose orientation varies, to test retinal resolving power and shape recognition. This test is not only useful for non-readers but also prevents literate individuals from guessing letters, thus offering a more accurate vision assessment. Additionally, this test can highlight the main meridians, a crucial aspect in diagnosing significant astigmatism.