What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActive

LOINC Code 55978-1: Left corrective lens Visual acuity near by Lensmeter

Name: LOINC Code 55978-1: Left corrective lens Visual acuity near by Lensmeter
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:37.766Z

55978-1 is a LOINC code used to identify Left corrective lens Visual acuity near by Lensmeter 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 acuity.near. It is commonly used with the system or sample type Corrective lens.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 acuity.near. It is commonly used with the system or sample type Corrective lens.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
Method: Lensmeter

What it does not mean

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

Key facts

Left corrective lens Visual acuity near by Lensmeter
Visual acuity.near
by LM; Corr lens; EYE; EYE.GLASSES; Focimeter; L; L corr lens; Length Ratio; Lensometer; LM; LT; Near VA; Ophthalmology; Ophtho; Ophthy; Point in time; QNT; Quan; Quant; Quantitative; Random; Refraction; VA

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

Left corrective lens Visual acuity near by LensmeterL corr lens Near VA by LMVisual acuity.nearEYE.GLASSESLenRtoPtCorrective lens.left

Frequently asked questions

Code details

Code55978-1

SystemLOINC

Display nameLeft corrective lens Visual acuity near by Lensmeter

DescriptionVisual acuity.near

Short nameL corr lens Near VA by LM

ComponentVisual acuity.near

PropertyLenRto

TimingPt

System (specimen)Corrective lens.left

ScaleQn

MethodLensmeter

ClassEYE.GLASSES

Example unitsft/ft

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.72

Part names

Visual acuity.nearLenRtoPtCorrective lens.leftQnLensmeterVisual acuity nearLength RatioPoint in time (spot)Left corrective lens

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.