Electrooculography
Electrooculography (pronunciation: e-lek-tro-oc-u-log-ra-phy) is a technique used to measure the corneo-retinal standing potential that exists between the front and the back of the human eye. The resulting signal is called the electrooculogram. Primary applications are in ophthalmological diagnosis and in recording eye movements. Unlike Electroretinography which measures the electrical response of the retina, Electrooculography measures the resting potential of the retina.
Etymology
The term "Electrooculography" is derived from three words: "Electro", referring to electrical activity, "oculo", referring to the eye, and "graphy", which means to write or record.
Procedure
The procedure of Electrooculography involves placing electrodes on the skin around the eyes. The electrodes measure the electrical potential between the front (cornea) and back (retina) of the eye, which changes as the eyes move. This allows the recording of eye movements, and can be used to diagnose a variety of eye conditions.
Applications
Electrooculography has several applications in the field of ophthalmology. It is used to diagnose and monitor diseases such as Retinitis Pigmentosa, Best's Disease, and other disorders affecting the pigment epithelium of the retina. It can also be used to record eye movements in research and in the diagnosis of eye movement disorders.
Related Terms
- Electroretinography: A diagnostic test that measures the electrical responses of various cell types in the retina.
- Cornea: The clear front surface of the eye.
- Retina: The light-sensitive layer of tissue at the back of the inner eye.
- Ophthalmology: The branch of medicine that deals with the diagnosis and treatment of eye disorders.
External links
- Medical encyclopedia article on Electrooculography
- Wikipedia's article - Electrooculography
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