LOINCActive

LOINC Code 28710-2: Left eye Visual acuity far by Phoropter

28710-2 is a LOINC code used to identify Left eye Visual acuity far by Phoropter 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.far. 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 acuity.far. 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
  • Method: Phoropter

What it does not mean

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

Key facts

  • Left eye Visual acuity far by Phoropter
  • Visual acuity.far
  • by Phoropter; Distance; Eye; EYE.REFRACTION; Eyeball; Far VA; L; L eye; Length Ratio; LT; Occular; Oculis; Ophthalmologic; Ophthalmology; Ophtho; Ophthy; Optic globe; Point in time; QNT; Quan; Quant; Quantitative; Random; Refraction; VA; 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

Left eye Visual acuity far by PhoropterL eye Far VA by PhoropterVisual acuity.farEYE.REFRACTIONLenRtoPtEye.left

Frequently asked questions

Code details

Code28710-2
SystemLOINC
Display nameLeft eye Visual acuity far by Phoropter
DescriptionVisual acuity.far
Short nameL eye Far VA by Phoropter
ComponentVisual acuity.far
PropertyLenRto
TimingPt
System (specimen)Eye.left
ScaleQn
MethodPhoropter
ClassEYE.REFRACTION
Example unitsft/ft
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.00
Last changed2.71

Part names

Visual acuity.farLenRtoPtEye.leftQnPhoropterVisual acuity farLength RatioPoint 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 28710-2 | HealthAssure