ARCHETYPE Light projection test (openEHR-EHR-OBSERVATION.light_projection_test.v0)

ARCHETYPE IDopenEHR-EHR-OBSERVATION.light_projection_test.v0
ConceptLight projection test
DescriptionThe assessment of an individual's ability to discriminate the directions of a light stimulus presented from different positions relative to a single eye.
UseUse to record an individual's ability to perceive the direction of a light source, typically performed when visual acuity is limited to light perception.
MisuseNot to be used for recording the results of a visual acuity test result. Use the OBSERVATION.visual_acuity archetype for this purpose. Not to be used for recording visual field testing. The need for a specific archetype for this purpose is acknowledged but had not yet been developed at the time of the publication of this archetype.
PurposeTo record the results of a light projection test for a single eye.
ReferencesParis J, Macri C, Lee YM, Agrawal S, Chan WO. Utility of the light projection test in detecting and localising retinal detachment. Hong Kong J Emerg Med. 2025;32:e70064. doi: 10.1002/hkj2.70064.
Copyright© openEHR Foundation
AuthorsAuthor name: Lars Fuhrmann
Organisation: German Society of Ophthalmology, Germany
Email: lars.fuhrmann@dog.org
Date originally authored: 2026-03-22
Other Details LanguageAuthor name: Lars Fuhrmann
Organisation: German Society of Ophthalmology, Germany
Email: lars.fuhrmann@dog.org
Date originally authored: 2026-03-22
Other Details (Language Independent)
  • Licence: This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/.
  • Custodian Organisation: openEHR Foundation
  • References: Paris J, Macri C, Lee YM, Agrawal S, Chan WO. Utility of the light projection test in detecting and localising retinal detachment. Hong Kong J Emerg Med. 2025;32:e70064. doi: 10.1002/hkj2.70064.
  • Original Namespace: org.openehr
  • Original Publisher: openEHR Foundation
  • Custodian Namespace: org.openehr
  • MD5-CAM-1.0.1: 28FCB315FFCC5A5DD8472C009532EE71
  • Build Uid: fbc257b1-02c9-4565-812d-7dc02f3830bf
  • Ip Acknowledgements: This artefact includes content from SNOMED Clinical Terms® (SNOMED CT®) which is copyrighted material of the International Health Terminology Standards Development Organisation (IHTSDO).
  • Revision: 0.0.1-alpha
Keywordslight projection, low vision,
Lifecyclein_development
UIDd575b7fa-b711-451b-a42e-dbbe13a93b30
Language useden
Citeable Identifier1013.1.8236
Revision Number0.0.1-alpha
events
Any eventAny event: Default, unspecified point-in-time event which may be explicitly defined in a template or at run-time.
data
Eye examinedEye examined: Identification of the eye under examination.
  • Right eye [The right eye was examined.]
  • Left eye [The left eye was examined.]
Per light positionPer light position: The assessment of an individual's ability to discriminate the direction of a light stimulus presented from a single defined position relative to the eye.
A typical test involves four directions which are separated by 90°.
Light positionLight position: The position of the light source relative to the eye.
Coding with a terminology is recommended. Free text entry should only be permitted if no appropriate coded value is available.
Choice of:
  •  Coded Text
    • Superior [The light source was directed at the eye from above.]
    • Inferior [The light source was directed at the eye from below.]
    • Temporal [The light source was directed from the temporal side.]
    • Nasal [The light source was directed from the nasal side.]
    • Superior-temporal [The light source was directed from the upper-temporal quadrant.]
    • Superior-nasal [The light source was directed from the upper-nasal quadrant.]
    • Inferior-temporal [The light source was directed from the lower-temporal quadrant.]
    • Inferior-nasal [The light source was directed from the lower-nasal quadrant.]
  •  Text
ResponseResponse: The response given by the individual.
Coding with a terminology is recommended. Free text entry should only be permitted if no appropriate coded value is available.
Choice of:
  •  Coded Text
    • Superior [The individual reported the light was coming from above.]
    • Inferior [The individual reported the light was coming from below.]
    • Temporal [The individual reported the light was coming from the temporal side.]
    • Nasal [The individual reported the light was coming from the nasal side.]
    • Superior-temporal [The individual reported the light was coming from the upper-temporal quadrant.]
    • Superior-nasal [The individual reported the light was coming from the upper-nasal quadrant.]
    • Inferior-temporal [The individual reported the light was coming from the lower-temporal quadrant.]
    • Inferior-nasal [The individual reported the light was coming from the lower-nasal quadrant.]
    • Not visible [The individual could not see the light source.]
    • Visible, but direction not identifiable [The individual could see the light but could not determine its direction.]
    • Central [The individual reported the light as being in the central field of vision.]
  •  Text
CorrectnessCorrectness: Evaluation of whether the individual's response was correct.
  • Correct [The individual accurately identified the direction.]
  • Incorrect [The individual failed to identify the direction accurately.]
Overall resultOverall result: The overall assessment of light projection results in the examined eye.
  • Accurate [The light projection was accurate in all tested directions.]
  • Inaccurate [The light projection was inaccurate in one or more directions.]
Clinical interpretationClinical interpretation: Single word, phrase or brief description that represents the clinical meaning and significance of the findings.
CommentComment: Additional narrative about the test results and interpretation not captured in other fields.
state
Confounding factorsConfounding factors: Identification of any incidental factors related to the state of the subject which may affect clinical interpretation of the measurement.
For example: 'reduced cooperation'. Coding with a terminology is recommended. Free text entry should only be permitted if no appropriate coded value is available.
protocol
ExtensionExtension: Additional information required to extend the model with local content or to align with other reference models or formalisms.
For example: local information requirements; or additional metadata to align with FHIR.
Include:
All not explicitly excluded archetypes
Other contributorsLars Fuhrmann, German Society of Ophthalmology, Germany
Heather Leslie, Atomica Informatics, Australia
Translators