Another known cause is a rare genetic condition called Cohen syndrome (aka Pepper syndrome). Cohen syndrome is mostly characterized by obesity, mental retardation and craniofacial dysmorphism due to genetic mutation at locus 8q22–23. Rarely, it may have ocular complications such as hemeralopia, pigmentary chorioretinitis, optic atrophy or retinal/iris coloboma, having a serious effect on the persons vision. Yet another cause of hemeralopia is uni- or bilateral postchiasmatic brain injury. This may also cause concomitant nyctalopia. Management
People with hemeralopia may benefit from sunglasses. Wherever possible, environmental illumination should be adjusted to comfortable level. Light-filtering lenses appear to help in people reporting photophobia.Otherwise, treatment relies on identifying and treating any underlying disorder. See also
Adaptation (eye)


== References ==
Chorditis is the inflammation of vocal cords (vocal folds) usually as a result of voice abuse but sometimes because of cancer. Types
Chorditis fibrinosa
Chorditis nodosa
Chorditis tuberosa

See also
Vocal fold nodule

References


== External links ==