79783-7

b-wave amplitude Right retina light-adapted by ERG

Active

Term Description

This term was developed in collaboration with the National Institute of Health's National Eye Institute (NEI) as part of an effort to standardize the data elements collected by the National Ophthalmic Disease Genotyping and Phenotyping Network (eyeGENE).

Part Descriptions

LP200586-8 b-wave amplitude
The b-wave is an electroretinographic (ERG) measurement of the corneal-positive deflection, derived from the inner retina (predominantly Muller and ON-bipolar cells). The hyperpolarization of the photoreceptor cells results in a decrease in the amount of neurotransmitter released, which subsequently leads to a depolarization of the post-synaptic bipolar cells. The bipolar-cell depolarization increases the level of extracellular potassium, subsequently generating a transretinal current. It is this transretinal current that depolarizes the radially oriented Muller cells and generates the corneal-positive deflection. The b-wave amplitude is generally measured from the trough of the a-wave to the peak of the b-wave. This wave is the most common component of the ERG used in clinical and experimental analysis of human retinal function. Source: Regenstrief LOINC

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

LP203648-3 EYE.ERG.NEI
Developed in collaboration with the National Institute of Health's National Eye Institute (NEI) as part of an effort to standardize the data elements collected by the National Ophthalmic Disease Genotyping and Phenotyping Network (eyeGENE). Source: Regenstrief LOINC

LOINC Names Get Info

Fully-Specified Name: b-wave amplitude^light-adapted:Elpot:Pt:Retina.right:Qn:Electroretinogram
Long Common Name: b-wave amplitude Right retina light-adapted by ERG
Short Name: b-wave amp R ret lght-adpt ERG

Part Model Get Info

Component
b-wave amplitude^light-adapted
LP308068-8
- Analyte
  b-wave amplitude
  LP200586-8
  - Component Numerator
    b-wave amplitude
    LP200586-8
    - Component Numerator Core
      b-wave amplitude
      LP200586-8
    - Component Numerator Core Suffix
      NULL
  - Component Denominator
    NULL
    - Component Denominator Core
      NULL
    - Component Denominator Core Suffix
      NULL
- Challenge
  light-adapted
  LP200598-3
- Adjustment
  NULL
- Count
  NULL
Property
Elpot
LP6802-5
Time
Pt
LP6960-1
- Time Core
  Pt
  LP6960-1
- Time Modifier
  NULL
System
Retina.right
LP30247-8
- System Core
  Retina.right
  LP30247-8
- Super System
  NULL
Scale
Qn
LP7753-9
Method
Electroretinogram
LP190652-0

Basic Attributes

Class: EYE.ERG.NEI
Type: Clinical
First Released: Version 2.54
Last Updated: Version 2.83 (MIN)
Order vs. Observation: Observation

Member of these Panels

LOINC	Long Common Name
79894-2	Electroretinography (ERG) panel

Language Variants Get Info

Tag	Language	Translation
el-GR	Greek (Greece)	εύρος κύματος b^προσαρμογή στο φως:Elpot:Pt:Αμφιβληστροειδής.δεξιά:Qn:Ηλεκτροαμφιβληστροειδογράφημα Synonyms: B Elpot EYE EYE.ERG EYE.ERG.NEI Pt Qn Αμφιβληστροειδής Αμφιβληστροειδής.δεξιά εύρος κύματος b Ηλεκτροαμφιβληστροειδογράφημα προσαρμογή στο φως
es-MX	Spanish (Mexico)	amplitud de onda b ^ adaptada a la luz:Elpot:Punto temporal:Retina derecha:Cuantitativo:Electroretinogram
it-IT	Italian (Italy)	onda B ampiezza^adattato alla luce:Elpot:Pt:Retina.destra:Qn:Elettroretinografia Synonyms: ampiezza dell''onda B Concetti di elettroretinografia NEI eyeGENE Elettroretinogramma Mediante ERG Occhio Potenziale Elettrico (Voltaggio) Punto nel tempo (episodio) Retina Destra
zh-CN	Chinese (China)	b-波振幅^明适应型:电势:时间点:视网膜.右侧:定量型:视网膜电图 Synonyms: B 型 b-波振幅（波幅、波幅度、幅度） R RT 伏特;伏特数;电位(伏特数);电位(电压);电势(伏特数);电压;电势(电压) 可用数量表示的;定量性;数值型;数量型;连续数值型标尺右右侧（Right，R，RT）右侧的右侧视网膜右向右向的右边右边的向右向右的时刻;随机;随意;瞬间明适应;光明适应型;光明适应;光适应型;光适应;亮适应型;亮适应眼;眼睛;眼科;眼科学与验光变量;眼科学与验光指标眼科学与视力测定变量.视网膜电图（视网膜电位图、视网膜电图描记术、视网膜电图描记法、视网膜电流描记、视网膜电流描记法、视网膜电流描记术、网膜电图学、视网膜电图描记、视网膜电能检验、视网膜电图学、ERG）.NEI;NEI eyeGENE''s electroretinogram concepts;NEI eyeGENE 视网膜电图描记术概念;Electroretinography;ERG 眼科学与视力测定变量.视网膜电图描记术（视网膜电图描记、视网膜电图描记法、视网膜电流描记、视网膜电流描记法、视网膜电流描记术、网膜电图学、视网膜电图、视网膜电能检验、视网膜电图学、ERG）;眼科学与视力测定变量.ERG;Electroretinography;ERG 视网膜电位图;眼电图;视网膜电图描记术;视网膜电图描记法;视网膜电流描记;视网膜电流描记法;视网膜电流描记术;网膜电图学;视网膜电图描记;视网膜电能检验;视网膜电图学;Electroretinogram;ERG 视衣

Example Units

Unit	Source
mV	Example UCUM Units

LOINC Terminology Service (API) using HL7^® FHIR^® Get Info

CodeSystem lookup: https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=79783-7

LOINC Copyright

Copyright © Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.