enophthalmos
Enable an agent to recognize enophthalmos, characterize posterior globe displacement, assess its consequences, and support appropriate clinical evaluation and follow-up.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 17 findings · 27 questions
Recognition and boundaries Establish whether the registered positional state is present.
Posterior position
Locate the globe relative to a defensible orbital reference.
Evidence of recession
Record the observation supporting true posterior displacement and the confidence assigned to it.
- What examination or imaging evidence establishes posterior displacement within the orbit? definition
- Which anatomical reference and comparison establish that the position is abnormal? measurement
Apparent recession
Separate the positional state from neighboring explanations of appearance.
Mimics and coexisting malposition
Document globe-size abnormalities, eyelid changes, comparison-eye abnormalities, and non-posterior displacement separately.
- Could reduced globe size, eyelid position, or contralateral proptosis explain the apparent recession? boundary
- Is any inferior or horizontal globe displacement present in addition to posterior recession? measurement
Measurement and comparability Make globe-position measurements interpretable across examinations.
Measurement reference
Record how each position estimate was obtained.
Instrument and landmark validity
Hertel measurements depend on lateral orbital rim integrity; record compromised landmarks. [Measurement limitations](https://www.ncbi.nlm.nih.gov/books/NBK563300/)
- What were the readings for both eyes, instrument type, base setting where applicable, and observer? measurement
- Have trauma, surgery, or anatomical asymmetry altered the landmarks used by this method? boundary
Interpreting differences
Distinguish supported recession from reference error and measurement variation.
Comparator and threshold
Require an explicit comparator and justification for any diagnostic or change threshold, especially in bilateral cases.
- Is interpretation based on the fellow eye, an earlier measurement, or a justified reference population? provenance
- What supports the chosen threshold, and does the observed difference exceed uncertainty for this measurement method? measurement
Orbital mechanism and cause Connect posterior displacement to supported anatomical mechanisms and causal conditions.
Structural mechanism
Describe the anatomical explanation without forcing a single cause.
Space, content, and retraction
Assess orbital cavity enlargement, soft-tissue volume loss, and fibrotic retraction as possible mechanisms. [Mechanism overview](https://www.ncbi.nlm.nih.gov/books/NBK563300/)
- What evidence supports increased orbital space, reduced orbital contents, a retractile process, or a combination? provenance
- Which orbital walls, fat compartments, or other tissues are implicated by the available examination or imaging? measurement
Causal attribution
Link mechanisms to events or diseases at an appropriate confidence level.
Supported causal link
Record evidence for a related injury, procedure, sinus disorder, or other condition without treating temporal association as proof.
- Which preceding event or diagnosed condition is proposed to explain this eye's recession, and what supports that link? provenance
- Which alternative causes remain unresolved, and what additional clinician-directed evaluation could distinguish them? action
Course and clinical burden Represent change over time and its functional and personal consequences.
Onset and evolution
Reconstruct when recession appeared and how it has changed.
Documented position trajectory
Keep reported onset, first documentation, and comparable serial measurements distinct.
- When was recession first noticed, and what earlier photographs or examinations document baseline appearance or position? provenance
- Do comparable observations support stability, progression, or improvement, and what limits that conclusion? measurement
Functional and appearance effects
Record consequences without automatically attributing every ocular symptom to recession.
Attributable burden
Separate observed impairment, reported distress, and the evidence connecting each to globe position.
- Are diplopia, motility restriction, eyelid-closure difficulty, or visual changes documented, and what is their proposed relationship to the orbital abnormality? boundary
- Which appearance changes or activity limitations matter to the person, and how are those concerns recorded over time? measurement
Clinical disposition and outcomes Support clinician-led next steps and evaluation of their results.
Assessment disposition
Make the rationale for further assessment or monitoring explicit.
Next-step rationale
Record the responsible clinician's disposition and unresolved orbital or visual findings influencing it.
- Are acute visual changes, trauma-related findings, or progressive unexplained recession present for clinician assessment of urgency? action
- What supports observation, additional investigation, or specialist referral, and who owns the next step? action
Response and residual state
Assess outcomes against the original positional and functional objectives.
Multidimensional outcome
Track globe position, associated impairment, personal concerns, and adverse effects separately after management.
- What changed in measured recession and associated symptoms using comparable pre-management and follow-up observations? measurement
- What residual displacement, new symptoms, or unmet personal priorities require reassessment? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of enophthalmos this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these kinds and varieties hold for the sense of enophthalmos this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of enophthalmos this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of enophthalmos this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these typical measurements hold for the sense of enophthalmos this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of enophthalmos this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of enophthalmos this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Cross-cutting context
- Entry kind
- thing
- Plane
- XCT
- Domain
- XCT.STA
- Other names and narrower kinds
- Silent sinus syndrome
What it is Filled
Enophthalmos is posterior displacement of the eyeball within the bony orbit relative to its normal position, resulting from an altered relationship between orbital capacity, orbital contents and their supporting tissues.
In scope
- True posterior globe displacement within the orbit, including laterality and temporal course
- Distinction between measured displacement and an apparently sunken eye
- Reproducible globe-position measurements and their reference frames
- Evidence linking displacement to orbital structural changes
- Associated functional impairment, appearance concerns, and clinical disposition
Out of scope
- Complete models of orbital fractures, sinus disease, tumors, or other underlying causes
- Proptosis as an independently modeled anterior displacement state
- Primary abnormalities of globe size or eyelid position
- Detailed operative techniques, implant specifications, and surgical prescribing
- General ophthalmic disease assessment unrelated to globe displacement
Why it exists Filled
Enable an agent to recognize enophthalmos, characterize posterior globe displacement, assess its consequences, and support appropriate clinical evaluation and follow-up.
Distinguishing features Filled
- Confirm posterior globe displacement relative to an explicit orbital reference, rather than relying only on a sunken appearance. [Clinical definition](https://pubmed.ncbi.nlm.nih.gov/18462475/)
- Record globe size and integrity to distinguish displacement from apparent recession caused by a small or shrunken globe. [Differential assessment](https://www.ncbi.nlm.nih.gov/books/NBK563300/)
- Separate posterior displacement from hypoglobus, which describes inferior globe displacement; both may coexist. [Positional distinctions](https://www.ncbi.nlm.nih.gov/books/NBK563300/)
- Establish whether the comparison eye is itself proptotic before interpreting asymmetry as enophthalmos. [Differential diagnosis](https://www.ophed.com/system/files/2009/07/enophthalmos-article-1795-1795.pdf)
- Do not equate isolated ptosis or a deep superior eyelid sulcus with confirmed posterior globe displacement. [Clinical assessment](https://pmc.ncbi.nlm.nih.gov/articles/PMC11562999/)
What robots and AI may and may not do Filled
Must not
- Diagnose the cause or advise delaying care.
- Infer a disease from photos of a person's face without consent.
- Mock changes in a person's appearance.
Only with a human decision
- Any treatment or surgery on the orbit.
May
- Explain enophthalmos and its causes from medical sources.
- Advise urgent care after facial injury with eye changes.
Moral aspects Filled
- Changes to the face affect dignity and self-image.
- It can signal fractures or tumours that need prompt care.
Who is affected
- Patients
- Trauma victims
- People photographed
Owners Filled
Steward
The person whose body it is; clinicians treat it with consent.
Links to other meta-models Filled
parent
- Q18558098 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.enophthalmos
- Wikidata: Q1343593 (https://www.wikidata.org/wiki/Q1343593)
Direct properties not applicable Not applicable
- Confirmation status: suspected | confirmed | apparent recession without confirmed displacement | indeterminate
- Laterality: right | left | bilateral
- Globe projection: mm for each eye, with instrument, anatomical reference, base setting where applicable, and examination date
- Relative posterior displacement: mm relative to a named comparator, with an explicit sign convention
- Reference validity: usable | compromised | uncertain, with reason
- Temporal course: newly observed | longstanding | progressive | stable | improving | unknown; onset and observation dates
- Additional displacement: vertical and horizontal displacement in mm where measured, with direction and reference
- Mechanism attribution: linked orbital enlargement, tissue-volume loss, retractile process, mixed mechanism, or unresolved cause; supporting evidence and confidence
- Functional and personal burden: documented diplopia, motility limitation, eyelid-closure difficulty, visual change, and patient-reported appearance concern
Plane XCT: no invented physical properties.
Recognition optional Filled
- One eye looks sunken compared with the other.
- A deeper upper eyelid fold on the affected side.
Capabilities and actions required Filled
- Classify a sunken-eye observation as suspected, confirmed, apparent, or unresolved enophthalmos.
- Compare serial globe-position observations when their measurement references are compatible.
- Identify missing evidence needed to distinguish positional change from globe-size or eyelid abnormalities.
- Link supported causal mechanisms to neighboring disease or injury models.
- Summarize symptoms and examination findings for clinician-led assessment of urgency and management.
- Track positional, functional, and patient-reported outcomes after observation or treatment.
Hazards and failure modes required Filled
- Double vision from orbital fractures.
- Missed underlying tumours.
Standards and interfaces required Filled
- The International Classification of Diseases, Tenth Revision, issued by the World Health Organization, classifies enophthalmos under H05.4.
Context of use required Filled
- Enophthalmos is encountered in ophthalmology, orbital surgery and assessments of facial injury or orbital disease.
- The term describes a clinical finding used to document globe position and investigate changes in orbital volume, contents or supporting tissues.
Sources Filled
- Wikidata item Q1343593: enophthalmos - identity and sense of the item
- Wikipedia: Enophthalmos - general description of the item
Open questions
- Which method-specific and population-appropriate reference ranges best support recognition when both eyes are affected or no reliable baseline exists?
- What minimum detectable change should be used for each clinical or imaging measurement method when orbital landmarks are altered?
- How should the model distinguish persistent enophthalmos from gaze-dependent globe retraction without conflating their mechanisms?
- Which evidence best separates the contributions of orbital enlargement, tissue loss, and fibrosis in mixed-mechanism cases?
- Which validated outcome measures and follow-up intervals best capture functional benefit and patient-valued appearance changes across different causes?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1343593/spec.json