Definitions for achromatopsia
achro·matop·si·a

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1. achromatopsianoun

   achromatopia

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1. Achromatopsia

   Achromatopsia is a medical syndrome that exhibits symptoms relating to at least five separate individual disorders. Although the term may refer to acquired disorders such as cerebral achromatopsia also known as color agnosia, it typically refers to an autosomal recessive congenital color vision disorder, the inability to perceive color and to achieve satisfactory visual acuity at high light levels. The syndrome is also present in an incomplete form which is more properly defined as dyschromatopsia. The only estimate of its relative occurrence of 1:33,000 in the general population dates from the 1960s or earlier. There is some discussion as to whether achromats can see color or not. As illustrated in The Island of the Colorblind by Oliver Sacks, some achromats cannot see color, only black, white, and shades of grey. With five different genes currently known to cause similar symptoms, it may be that some do see marginal levels of color differentiation due to different gene characteristics. With such small sample sizes and low response rates, it is difficult to accurately diagnose the 'typical achromatic conditions'. If the light level during testing is optimized for them, they may achieve corrected visual acuity of 20/100 to 20/150 at lower light levels, regardless of the absence of color. One common trait is hemeralopia or blindness in full sun. In patients with achromatopsia, the cone system and fibres carrying colour information remain intact. This indicates that the mechanism used to construct colours is defective.

Anagrams for achromatopsia »

1. achromatopias

How to pronounce achromatopsia?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say achromatopsia in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of achromatopsia in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of achromatopsia in Pythagorean Numerology is: 4

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Achromatopsia
2. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=achromatopsia