loading...| Preferred Name |
Achromatopsia |
|
| Synonyms |
Rod monochromatism Rod monochromacy |
|
| Definitions |
A condition where the retina contains no functional cone cells, so that in addition to the absence of color discrimination, vision in lights of normal intensity is difficult. The end stage of cone degeneration is rod monochromacy, also called achromatopsia, in which vision is mediated exclusively by rod photoreceptors. Rod monochromacy can also be manifest from birth and can be due to congenitally absent or dysfunctional cone photoreceptors. There is no rod counterpart to cone degeneration; all rod photoreceptor degenerations have a secondary loss of cones and are categorized as retinitis pigmentosa. |
|
| ID |
http://purl.obolibrary.org/obo/HP_0011516 |
|
| comment |
The end stage of cone degeneration is rod monochromacy, also called achromatopsia, in which vision is mediated exclusively by rod photoreceptors. Rod monochromacy can also be manifest from birth and can be due to congenitally absent or dysfunctional cone photoreceptors. There is no rod counterpart to cone degeneration; all rod photoreceptor degenerations have a secondary loss of cones and are categorized as retinitis pigmentosa. |
|
| creation date |
2012-04-06T06:40:03Z |
|
| creator | ||
| database_cross_reference |
SNOMEDCT_US:102450007 UMLS:C0302129 MSH:C536021 |
|
| definition |
A condition where the retina contains no functional cone cells, so that in addition to the absence of color discrimination, vision in lights of normal intensity is difficult. |
|
| has exact synonym |
Rod monochromatism Rod monochromacy |
|
| id |
HP:0011516 |
|
| label |
Achromatopsia |
|
| notation |
HP:0011516 |
|
| prefLabel |
Achromatopsia |
|
| subClassOf |