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  2. Farnsworth–Munsell 100 hue test - Wikipedia

    en.wikipedia.org/wiki/Farnsworth–Munsell_100...

    The Farnsworth–Munsell 100 Hue Color Vision test is a color vision test often used to test for color blindness.The system was developed by Dean Farnsworth in the 1940s and it tests the ability to isolate and arrange minute differences in various color targets with constant value and chroma that cover all the visual hues described by the Munsell color system. [1]

  3. Color vision test - Wikipedia

    en.wikipedia.org/wiki/Color_vision_test

    An Ishihara test image as seen by subjects with normal color vision and by those with a variety of color deficiencies. A pseudoisochromatic plate (from Greek pseudo, meaning "false", iso, meaning "same" and chromo, meaning "color"), often abbreviated as PIP, is a style of standard exemplified by the Ishihara test, generally used for screening of color vision defects.

  4. Farnsworth Lantern Test - Wikipedia

    en.wikipedia.org/wiki/Farnsworth_Lantern_Test

    By design, the FALANT allows mild color-blindness conditions to pass the test, while still excluding most of the moderate or severe cases of color-deficiency. The test is intended to mimic the types of situations requiring color vision that a sailor would find while serving aboard a ship. A passing test is no mistakes in the first nine pairs ...

  5. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    Color blindness can also result from physical or chemical damage to the eye, the optic nerve, parts of the brain, or from medication toxicity. [2] Color vision also naturally degrades in old age. [2] Diagnosis of color blindness is usually done with a color vision test, such as the Ishihara test.

  6. Ishihara test - Wikipedia

    en.wikipedia.org/wiki/Ishihara_Test

    The Ishihara test is a color vision test for detection of red–green color deficiencies. It was named after its designer, Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917. [2] The test consists of a number of Ishihara plates, which are a type of pseudoisochromatic plate.

  7. Holmgren's wool test - Wikipedia

    en.wikipedia.org/wiki/Holmgren's_wool_test

    In Holmgren's wool test, the patient is asked to match coloured skeins of yarn to the samples in the box. [6] [7] At first, the patient is asked to select from the 40 skeins, 10 skeins that best match the light green master A. [2] From the remaining 30 skeins, the patient is then asked to select the 5 skeins that best match the red master C. [2] Lastly, the patient is asked to select 5 skeins ...

  8. USDA asks Hoosiers to stop spotted lanternfly, spongy moth ...

    www.aol.com/usda-asks-hoosiers-stop-spotted...

    The moths have lived in Europe and Asia for thousands of years but were accidentally introduced to Boston in the 1860s. Spongy moths feed on foliage of many plant varieties but prefer oak trees.

  9. Monochromacy - Wikipedia

    en.wikipedia.org/wiki/Monochromacy

    Monochromacy (from Greek mono, meaning "one" and chromo, meaning "color") is the ability of organisms to perceive only light intensity without respect to spectral composition. Organisms with monochromacy lack color vision and can only see in shades of grey ranging from black to white.