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Cheiroscope

A cheiroscope (also: chiroscope) is an optical device consisting of a viewing instrument equipped with a drawing pad, with the viewing instrument set up as a haploscope that blends a left and/or right image into view over the drawing. The cheiroscope was presented in an article published in 1929. The author E. E. Maddox writes that compared to the earlier amblyoscope, :"[t]he cheiroscope approaches the problem from a different and complementary angle, on the simple principle of pressing the hand into service to educate the eye." A cheiroscope can be operated in different manners. For example, using a cheiroscope, a line image can be presented to one eye and the image of a blank sheet to the other eye, and the subject is intended to make a drawing that reproduces the line image. The cheiroscope is used for diagnostic purposes to test binocular vision, to assess certain conditions of strabism in particular related to binocular stability and alignment, cyclotropia, and the presence and extent of suppression. It can also be used in vision therapy to train amblyopic subjects in desuppression and eye–hand coordination. A stereoscope can be modified to function as a cheiroscope.

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Article summary

A cheiroscope (also: chiroscope) is an optical device consisting of a viewing instrument equipped with a drawing pad, with the viewing instrument set up as a haploscope that blends a left and/or right image into view over the drawing. The cheiroscope was presented in an article published in 1929. The author E. E. Maddox writes that compared to the earlier amblyoscope, :"[t]he cheiroscope approaches the problem from a different and complementary angle, on the simple principle of pressing the hand into service to educate the eye." A cheiroscope can be operated in different manners. For example, using a cheiroscope, a line image can be presented to one eye and the image of a blank sheet to the other eye, and the subject is intended to make a drawing that reproduces the line image. The cheiroscope is used for diagnostic purposes to test binocular vision, to assess certain conditions of strabism in particular related to binocular stability and alignment, cyclotropia, and the presence and extent of suppression. It can also be used in vision therapy to train amblyopic subjects in desuppression and eye–hand coordination. A stereoscope can be modified to function as a cheiroscope.

Key claims

  1. publication date: 1929 — source: Wikipedia · confidence 0.95

Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. The record states that the publication date is "1929". What evidence would count against this claim?
  3. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  4. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

  1. Wikipedia https://en.wikipedia.org/w/index.php?oldid=1320096217

Key claims and bibliography are generated from the same tracked claims and sources as the article page.