Rod & Cone Dystrophy

Saturday, 14 November 2009 09:57


Rod & Cone Dystrophy

is the name given to a wide range of eye conditions. These eye conditions are all linked by a problem with the rod and cone photoreceptors. The photoreceptors either do not work from the day a child is born or else slowly stop working over a period of time. Dystrophy is a word for a condition which a child is born with. Some of these conditions do not only affect the eye but may also affect the rest of a child's body.
There are many reasons why children may get a Rod & Cone Dystrophy.

Most Rod & Cone Dystrophies are caused by defect in a child's genes. Genes are a chemical alphabet stored in the body. Genes contain the body's "built-in" code to make sure all the parts of the body work correctly. If a gene has a defect in the code then a part of the body may not work correctly. A patient with a Rod & Cone Dystrophy has often received a gene with a defect in it from one or both parents. Sometimes by chance a new defect occurs in the patient's genes and the parent's genes are normal. 

Leber's Amaurosis, Retinitis Pigmentosa, Usher's Syndrome and Stargardt's Macular Dystrophy are some of the more common conditions where rod and cone photoreceptors do not work properly. 

Details of the various commonly occuring Rod & Cone Dystrophies can be viewed by clicking the appropriate link on the "Eye Disease" page.