96232-4
Right macula N2 amplitude--light-adapted by mfERG
Active
Part Descriptions
LP200598-3 light-adapted
Electrooculography (EOG) is a technique for measuring the resting potential of the retina. The EOG is used to assess the function of the pigment epithelium. During dark adaptation, the resting potential decreases slightly and reaches a minimum ("dark trough" or "Dt") after several minutes. When the light is switched on, a substantial increase of the resting potential occurs ("light peak" or "Lp"), which drops off after a few minutes when the retina adapts to the light. The ratio of the voltages (i.e., light peak divided by dark trough) is known as the Arden ratio and is normally above 1.80. The Arden ratio is often abnormal in retinitis pigmentosa, diabetic retinopathy, detached retina, Best disease and many other eye disorders.
Source: Regenstrief LOINC
LP420843-7 Electroretinogram.multifocal
A multifocal electroretinogram (mfERG) is a type of ERG. An ERG measures retinal electrical activity using a corneal electrode; an mfERG measures that activity in smaller areas of the retina in order to find local variation and pinpoint areas of dysfunction. PMID: 22038576
Source: Regenstrief LOINC
LP420846-0 N2 amplitude
The waveform found on a multifocal electroretinogram (mfERG) is typically a biphasic wave. The first deflection is negative, the second is positive, and the third is negative, and the three peaks are called N1, P1, and N2, respectively. The amplitude and implicit time can be measured for each, though P1 amplitude and implicit time are the most common measurements. PMID: 22038576
Source: Regenstrief LOINC
Fully-Specified Name
- Component
- N2 amplitude^light-adapted
- Property
- Elpot
- Time
- Pt
- System
- Macula.right
- Scale
- Qn
- Method
- Electroretinogram.multifocal
Additional Names
- Short Name
- R macula N2 amp--light-adapt mfERG
Basic Attributes
- Class
- EYE.ERG
- Type
- Clinical
- First Released
- Version 2.69
- Last Updated
- Version 2.69
- Order vs. Observation
- Observation
Member of these Panels
LOINC | Long Common Name |
---|---|
96227-4 | Multifocal electroretinography (mfERG) panel |
Language Variants Get Info
Tag | Language | Translation |
---|---|---|
es-MX | Spanish (Mexico) | Amplitud N2^ adaptado a la luz: |
it-IT | Italian (Italy) | N2, ampiezza^adattato alla luce: Synonyms: Ampiezza N2 Elettroretinogramma Macula destra Mediante ERG mfERG Occhio Potenziale Elettrico (Voltaggio) Punto nel tempo (episodio) |
zh-CN | Chinese (China) | N2 波振幅^明适应型: Synonyms: N2 波振幅(波幅、 |
Example Units
Unit | Source |
---|---|
mV | Example UCUM Units |
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