LOINCActiveObservation

LOINC Code 79805-8: Visual field defects Left eye

79805-8 is a LOINC code used to identify Visual field defects Left eye in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Visual field defects. It is commonly used with the system or sample type Eye.left.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Visual field defects. It is commonly used with the system or sample type Eye.left.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Observation

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Visual field defects Left eye
  • Visual field defects
  • 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).
  • Eye; EYE.VISUAL_FIELD; EYE.VISUAL_FIELD.NEI; Eyeball; Finding; Findings; L; L eye; LT; Nominal; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Point in time; Random; Vision; Visual

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Visual field defects Left eyeVisual field defects Eye-LVisual field defectsEYE.VISUAL_FIELD.NEIFindPtEye.left

Frequently asked questions

Code details

Code79805-8
SystemLOINC
Display nameVisual field defects Left eye
DescriptionVisual field defects
Short nameVisual field defects Eye-L
ComponentVisual field defects
PropertyFind
TimingPt
System (specimen)Eye.left
ScaleNom
ClassEYE.VISUAL_FIELD.NEI
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.54

Part names

Visual field defectsFindPtEye.leftNomFindingPoint in time (spot)Left eye

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 79805-8 | HealthAssure