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Part Descriptions

LP97035-7   OCT
Optical coherence tomography (OCT) is a non-invasive imaging technique that provides an in vivo, cross-sectional view of the retina. There are 6 retinal layers viewable with OCT: the nerve fiber layer (NFL), the inner plexiform layer and ganglion cell layer (IPL+GCL), the inner nuclear layer (INL), the outer plexiform layer (OPL), the outer nuclear layer and photoreceptor inner segments (ONL+PIS), and photoreceptor outer segments (POS). OCT uses low-coherence interferometry to provide very accurate cross-sectional images. Two forms of OCT are time domain and spectral domain. Spectral domain has replaced the former because of its speed (20,000+ scans per second to avoid motion artifacts) and high resolution, and it can both visualize and measure the thickness of the retinal pigment epithelium and the nerve fiber layer adjacent to the optic disc. Source: Regenstrief LOINC

LP248912-0   Retinal nerve fiber layer
The RNFL is formed from expansion of the fibers of the optic nerve and extends to the interior surface of the retina. The RNFL is divided into 4 quadrants when measured in each eye - temporal, superior, nasal, and inferior. Each 90 degree quadrant is further divided into three 30 degree sectors ("clock hours"). RNFL measurements include the thickness of each quadrant and the thickness of each sector. The mean thickness of the entire RNFL for each eye is calculated based on the individual measurements. In patients with glaucoma, RNFL changes in the inferior quadrant are most closely associated with glaucoma status. In addition, superior visual field defects, which correspond to the inferior RNFL quadrant, are usually the first to appear. PMID: 10636409 Source: Regenstrief LOINC

LOINC Names Get Info

Fully-Specified Name
Retinal nerve fiber layer.clock hour 4 thickness:Len:Pt:Retina.left:Qn:OCT
Long Common Name
Left retina Retinal nerve fiber layer.clock hour 4 thickness by OCT
Short Name
L ret RNFL 4 o'clock thickness OCT

Part Model Get Info

  • Component
    Retinal nerve fiber layer.clock hour 4 thickness
    LP250899-4
    • Analyte
      Retinal nerve fiber layer.clock hour 4 thickness
      LP250899-4
      • Component Numerator
        Retinal nerve fiber layer.clock hour 4 thickness
        LP250899-4
        • Component Numerator Core
          Retinal nerve fiber layer.clock hour 4 thickness
          LP250899-4
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    Len
    LP6822-3
  • Time
    Pt
    LP6960-1
  • System
    Retina.left
    LP30246-0
    • System Core
      Retina.left
      LP30246-0
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    OCT
    LP97035-7

Basic Attributes

Class
EYE.OCT
Type
Clinical
First Released
Version 2.61
Last Updated
Version 2.68 (MIN)
Order vs. Observation
Observation

Member of these Panels

LOINCLong Common Name
86291-2Retina Retinal nerve fiber layer panel by OCT

Language Variants Get Info

TagLanguageTranslation
el-GRGreek (Greece)Στιβάδα νευρικών ινών αμφιβληστροειδούς.πάχος στην 4η ώρα:Len:Pt:Αμφιβληστροειδής.αριστερά:Qn:OCT
Synonyms: EYE EYE.OCT Len OCT Pt Qn Αμφιβληστροειδής Αμφιβληστροειδής.αριστερά Πάχος Στιβάδα νευρικών ινών αμφιβληστροειδούς.πάχος στην 4η ώρα
es-MXSpanish (Mexico)Capa de fibras nerviosas de la retina. Hora 4 de espesor.:Len:Punto temporal:Retina izquierda:Cuantitativo:OCT
it-ITItalian (Italy)Strato delle fibre nervose della retina.spessore ore 4:Len:Pt:Retina.sinistra:Qn:OCT,Tomografia a coerenza ottica,TCO
Synonyms: Lunghezza Occhio Oftalmologia - Tomografia ottica a coerenza di f Punto nel tempo (episodio) Retina Sinistra
zh-CNChinese (China)视网膜神经纤维层.4点钟位厚度:长度:时间点:视网膜.左侧:定量型:光学相干断层扫描术
Synonyms: L LT 光学相干层析成像术;optical coherence tomography;OCT;光学相干断层成像术;光學相干斷層掃瞄;光学相干断层扫描;光学相干断层扫描成像术;光学相干断层扫描分析 厚 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 向左 向左侧 左 左侧（Left，LT，L） 左侧视网膜 左向 左边 时刻;随机;随意;瞬间 瑞叮醛;维生素 A 醛;维生素 A1 醛;视杆视色素;视醛;视黄素 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（眼科、眼）.光学相干断层扫描术（光学相干断层扫描、光学相干断层成像、光学同调断层扫描术、OCT） 视衣 长;长短

Example Units

UnitSource
umExample UCUM Units

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=86296-1