Electroretinography
Electroretinography, is used to measure the electrical responses of various cell types in the retina, including the light-sensitive cells (rods and cones) and the ganglion cells. Electrodes are placed on the cornea and the skin near the eye. During a recording, the patient is watching a standardized stimulus and the resulting signal is interpreted in terms of its amplitude (voltage) and time course. Stimuli include flashes (flash ERG) and reversing checkerboard patterns (pattern ERG). Applications are predominantly in ophthalmology, where the electroretinogram (ERG) is used for the diagnosis of various retinal diseases.
- Relevant Specialties
- Ophthalmology
- Paediatric Ophthalmology
- Medical Conditions
- Retinitis pigmentosa
- Retinitis pigmentosa sine pigmento
- Retinitis punctata albescens
- Leber's congenital amaurosis
- Choroideremia
- Gyrate atrophy of the retina and choroid
- Goldman-Favre syndrome
- X-linked juvenile retinoschisis
- Achromatopsia
- Cone dystrophy
- Disorders mimicking retinitis pigmentosa
- Usher syndrome
- Retinal detachment
- Diabetic retinopathy
- Central retinal vein occlusion
