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

Name: Light projection test
License: http://creativecommons.org/licenses/by-sa/4.0/

ARCHETYPE ID	openEHR-EHR-OBSERVATION.light_projection_test.v0
Concept	Light projection test
Description	The assessment of a patient's ability to identify the direction from which light is shone into en eye.
Use	Use to record the patient's ability to perceive the direction of a light source, typically performed when visual acuity is limited to light perception.
Misuse	Not to be used for recording formal visual field testing (perimetry).
Purpose	To record the results of a light projection test for a single eye per event.
References
Copyright	© openEHR Foundation
Authors	Author name: Lars Fuhrmann Organisation: German Society of Ophthalmology, Germany Email: lars.fuhrmann@dog.org Date originally authored: 2026-03-22
Other Details Language	Author 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 Original Namespace: org.openehr Original Publisher: openEHR Foundation Custodian Namespace: org.openehr MD5-CAM-1.0.1: A918D06CCA39F6E665E4E2F68ECC55D0 Build Uid: 3168617f-c287-4793-98da-b61655f35755 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
Keywords	light projection
Lifecycle	in_development
UID	d575b7fa-b711-451b-a42e-dbbe13a93b30
Language used	en
Citeable Identifier	1013.1.8236
Revision Number	0.0.1-alpha
events
Any event	Any event: Default, unspecified point in time or interval event which may be explicitly defined in a template or at run-time.
data
Eye examined	Eye examined: Identification of the eye under examination. at0006::Right eye [The right eye was examined.] at0007::Left eye [The left eye was examined.]
Result by light source position	Result by light source position: The result for a specific light source orientation. This cluster has multiple occurrences to allow recording of results across different quadrants. Typically, only 4 diretions/quadrants are being tested. Local clinical conventions may determine whether this is done from diagonal directions (such as superior-temporal) or vertical/horizontal directions.
Position of light source	Position of light source: The direction from which the light source was presented to the eye. at0011::Superior [The light source was directed at the eye from above.] at0012::Inferior [The light source was directed at the eye from below.] at0013::Temporal [The light source was directed from the temporal side.] at0014::Nasal [The light source was directed from the nasal side.] at0015::Superior-temporal [The light source was directed from the upper-temporal quadrant.] at0016::Superior-nasal [The light source was directed from the upper-nasal quadrant.] at0017::Inferior-temporal [The light source was directed from the lower-temporal quadrant.] at0018::Inferior-nasal [The light source was directed from the lower-nasal quadrant.] at0034::Axial [The light was presented directly along the visual axis.]
Patient answer	Patient answer: The direction or state reported by the patient. at0023::Superior [The individual reported the light was coming from above.] at0024::Inferior [The individual reported the light was coming from below.] at0025::Temporal [The individual reported the light was coming from the temporal side.] at0026::Nasal [The individual reported the light was coming from the nasal side.] at0027::Superior-temporal [The individual reported the light was coming from the upper-temporal quadrant.] at0028::Superior-nasal [The individual reported the light was coming from the upper-nasal quadrant.] at0029::Inferior-temporal [The individual reported the light was coming from the lower-temporal quadrant.] at0030::Inferior-nasal [The individual reported the light was coming from the lower-nasal quadrant.] at0031::Not visible [The individual could not see the light source.] at0032::Visible, but direction not identifiable [The individual could see the light but could not determine its direction.] at0033::Central [The individual reported the light as being in the central field of vision.]
Correctness of answer	Correctness of answer: Indication of whether the patient's response matched the light source position. at0020::Correct [The individual accurately identified the direction.] at0021::Incorrect [The individual failed to identify the direction accurately.]
Overall result	Overall result: The total clinical assessment of the light projection ability. at0036::Accurate [The light projection was accurate in all tested directions.] at0037::Inaccurate [The light projection was inaccurate in one or more directions.]
Clinical interpretation	Clinical interpretation: Single word, phrase or brief description that represents the clinical meaning and significance of the findings.
Comment	Comment: Additional narrative about the test results and interpretation not captured in other fields.
state
Confounding factors	Confounding factors: Description of any incidental factors related to the state of the subject which may affect clinical interpretation of the measurement. For example: 'reduced cooperation'
protocol
Extension	Extension: Additional information required to extend the model with local content or to align with other reference models or formalisms. Include: All not explicitly excluded archetypes
Other contributors	Lars Fuhrmann, German Society of Ophthalmology
Translators