different between astigmatism vs anatropia

English

Etymology

From a- (negative prefix) + stem of Ancient Greek ?????? (stígma, “mark, point”) + -ism. Coined by English polymath William Whewell in 1846.

Pronunciation

• (US) IPA^(key): /??st??m?t?zm?/

Noun

astigmatism (countable and uncountable, plural astigmatisms)

1. (optics) A defect of a lens such that light rays coming from a point do not meet at a focal point so that the image is blurred.
2. (pathology) A disorder of the vision, usually due to a misshapen cornea, such that light does not focus correctly on the retina causing a blurred image.

Synonyms

• astigmia

Derived terms

• astigmatic
• astigmatically

Related terms

• stigma
• stigmatize

Translations

See also

• emmetropia
• hyperopia
• myopia

Further reading

• astigmatism on Wikipedia.Wikipedia

Romanian

Etymology

From French astigmatisme

Noun

astigmatism n (uncountable)

1. astigmatism

Declension

English

Noun

anatropia (uncountable)

1. (medicine) A disorder of the vision. Deviation of the visual axis of one eye upwards when the other eye is fixing; anaphoria.
2. (medicine) A tendency for both eyes to look upward.

Derived terms

• anatropal
• anatropic
• anatropous

See also

• astigmatism
• emmetropia
• myopia

Anagrams

• paratonia