{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.ora-serrata","code":"thing-q2027917","url":"https://ver.cy/models/thing/q2027917/","name":"ora serrata","alternateNames":["right ora serrata","left ora serrata"],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The ora serrata is the serrated anterior boundary of the photosensitive retina, where its neural layers terminate and the retinal epithelium continues into the nonphotosensitive epithelium covering the ciliary body.","purpose":"Enable an agent to identify the ora serrata, record its local anatomy and observed integrity, and determine when findings require specialist interpretation.","scope":{"in":["Identification of the anterior retinal boundary in a specified eye","Circumferential contour, dentate processes and intervening ora bays","Transition between peripheral neural retina and pars plana epithelium","Spatial relationships with the vitreous base and adjacent ocular structures","Sector-specific observations of boundary integrity and examination coverage"],"out":["The retina as a whole, including macular and optic-disc anatomy","The complete ciliary body and its aqueous-production function","The vitreous body and posterior vitreous detachment as independent entities","Retinal dialysis and retinal detachment as disease models","Ophthalmic examination devices and surgical procedures","Patient-wide diagnosis, prognosis and treatment selection"],"boundaries":[]},"distinguishingFeatures":["Identifies the anterior termination of photosensitive retina, rather than an arbitrary line within peripheral retina.","Separates peripheral retinal tissue posteriorly from the pars plana epithelial region anteriorly; it is not the entire pars plana.","Its characteristic contour includes retinal dentate processes projecting anteriorly and intervening bays, although local serration may be inconspicuous.","Is a retinal boundary related to the vitreous base, whereas the vitreous base is an attachment region with spatial extent.","An intact ora serrata is an anatomical landmark; separation of retina at this boundary is a pathological finding rather than its defining identity."],"structure":{"bundles":[{"id":"retinal-boundary-identity","name":"Retinal boundary identity","description":"Establish which anatomical transition is being represented and which eye contains it.","layers":[{"id":"eye-and-sector","name":"Eye and sector","description":"Anchor the boundary to an anatomical instance and an explicit orientation.","findings":[{"id":"localized-ora-observation","name":"Localized ora observation","description":"Each observation should identify species, eye and circumferential sector before it is compared with another observation.","questions":[{"text":"Which subject or specimen, species and eye does this ora serrata observation belong to?","id":"localized-ora-observation-q01","kind":"provenance"},{"text":"Which clock-hour interval or angular sector is represented, and how is image orientation mapped to the eye?","id":"localized-ora-observation-q02","kind":"measurement"}]}]},{"id":"epithelial-transition","name":"Epithelial transition","description":"Establish the retinal and ciliary sides of the boundary.","findings":[{"id":"transition-evidence","name":"Transition evidence","description":"Identification should distinguish the retinal side from pars plana epithelium. Fine-structural work documents differences across this transition in primate eyes: [Some Fine Structural Features of the Ora Serrata Region in Primate Eyes](https://iovs.arvojournals.org/article.aspx?articleid=2203537).","questions":[{"text":"What visible or histological evidence identifies the retinal side and the pars plana side?","id":"transition-evidence-q01","kind":"definition"},{"text":"Is the transition directly demonstrated, inferred from landmarks, or unresolved in this observation?","id":"transition-evidence-q02","kind":"boundary"}]}]}]},{"id":"ora-contour-and-position","name":"Ora contour and position","description":"Represent the local shape and measured location of the anterior retinal margin.","layers":[{"id":"dentate-processes-and-bays","name":"Dentate processes and bays","description":"Describe the alternating projections and recesses without imposing uniform serration.","findings":[{"id":"local-contour-map","name":"Local contour map","description":"Record identified dentate processes, intervening bays and less clearly serrated segments separately from uncertain contours.","questions":[{"text":"Which local features can be identified as dentate processes or ora bays, and what establishes their anterior-posterior orientation?","id":"local-contour-map-q01","kind":"definition"},{"text":"What are the observed extent and shape of each mapped feature, and is the image calibrated for physical measurement?","id":"local-contour-map-q02","kind":"measurement"}]}]},{"id":"landmark-relative-position","name":"Landmark-relative position","description":"Locate the ora using explicit anatomical references and measurement geometry.","findings":[{"id":"meridian-specific-localization","name":"Meridian-specific localization","description":"Any distance assigned to the ora should retain its reference landmark, meridian and measurement method instead of becoming a universal anatomical constant.","questions":[{"text":"Which landmark defines the measured position of this ora segment, and along which meridian?","id":"meridian-specific-localization-q01","kind":"measurement"},{"text":"Was the distance obtained in vivo, from imaging, or from a prepared specimen, and what distortion or uncertainty was recorded?","id":"meridian-specific-localization-q02","kind":"provenance"}]}]}]},{"id":"vitreoretinal-interface-and-integrity","name":"Vitreoretinal interface and integrity","description":"Record the relationship between the ora, vitreous attachment and any local retinal separation.","layers":[{"id":"vitreous-base-relationship","name":"Vitreous-base relationship","description":"Keep vitreous attachment observations spatially distinct from the retinal margin.","findings":[{"id":"attachment-versus-boundary","name":"Attachment versus boundary","description":"A defect near the ora should not automatically be assigned to one vitreous-base relationship; published observations distinguish intrabasal and juxtabasal forms: [Juxta-basal retinal dialysis near the ora serrata](https://pubmed.ncbi.nlm.nih.gov/2811181/).","questions":[{"text":"Where are the observed vitreous attachment boundaries relative to the identified ora segment?","id":"attachment-versus-boundary-q01","kind":"boundary"},{"text":"Which examination evidence supports the attachment relationship, and which parts remain inferred?","id":"attachment-versus-boundary-q02","kind":"provenance"}]}]},{"id":"boundary-continuity","name":"Boundary continuity","description":"Describe intact appearance or suspected disinsertion at the ora.","findings":[{"id":"ora-associated-disinsertion","name":"Ora-associated disinsertion","description":"Retinal dialysis is a circumferential retinal break at the ora serrata. Record the local finding here and link its clinical interpretation to the disease model: [Clinical Characteristics and Management Outcomes of Rhegmatogenous Retinal Detachments Due to Retinal Dialysis](https://pmc.ncbi.nlm.nih.gov/articles/PMC9976130/).","questions":[{"text":"Does the observed separation reach the ora, or is it a distinct break posterior to the boundary?","id":"ora-associated-disinsertion-q01","kind":"boundary"},{"text":"What circumferential extent is involved, and which portions of the margin were directly assessed?","id":"ora-associated-disinsertion-q02","kind":"measurement"},{"text":"Does the finding require qualified review and a linked retinal-dialysis or retinal-detachment assessment?","id":"ora-associated-disinsertion-q03","kind":"action"}]}]}]},{"id":"ora-observation-and-interpretation","name":"Ora observation and interpretation","description":"Track whether the anterior retinal boundary was adequately observed and how confidently its appearance can be interpreted.","layers":[{"id":"sector-visibility","name":"Sector visibility","description":"Separate visible, obscured and unexamined portions of the ora.","findings":[{"id":"coverage-qualified-assessment","name":"Coverage-qualified assessment","description":"An integrity statement applies only to the ora sectors actually assessed, with method and visibility retained.","questions":[{"text":"Which ora sectors were directly visualized, and which were obscured or outside the examination field?","id":"coverage-qualified-assessment-q01","kind":"measurement"},{"text":"What examination or specimen method produced the observation, and what evidence shows that the ora itself was reached?","id":"coverage-qualified-assessment-q02","kind":"provenance"}]}]},{"id":"variant-and-change-interpretation","name":"Variant and change interpretation","description":"Distinguish a documented contour feature from an unresolved abnormality or a change between observations.","findings":[{"id":"qualified-contour-interpretation","name":"Qualified contour interpretation","description":"Unusual projections, recesses or apparent interruptions require evidence before being classified as normal variation, tissue disruption or examination artifact.","questions":[{"text":"What evidence supports interpreting the unusual ora contour as a variant, disruption or artifact?","id":"qualified-contour-interpretation-q01","kind":"boundary"},{"text":"If the contour appears changed, were the same eye, sector, orientation and observation conditions compared?","id":"qualified-contour-interpretation-q02","kind":"provenance"},{"text":"What additional observation or specialist interpretation would resolve the remaining uncertainty?","id":"qualified-contour-interpretation-q03","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of ora serrata this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of ora serrata this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of ora serrata this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of ora serrata this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these regional variation hold for the sense of ora serrata this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of ora serrata this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe the ora serrata and its place in the anatomy of the eye from reliable sources.","Label the ora serrata on anatomical diagrams and educational images."],"mustNot":["Diagnose retinal tears or detachments at the ora serrata in a particular person.","Suggest that sudden flashes, floaters or a shadow in vision can wait instead of prompting urgent eye care.","Present eye images of identifiable patients without consent."],"requiresHuman":["Any decision about treatment of the peripheral retina in a patient."]},"ethics":{"considerations":["Delayed care for retinal detachment can cost a person their sight.","Patient eye images are health data and need consent for reuse."],"affectedParties":["Patients with eye conditions","Eye clinicians","Students of anatomy"]},"owners":{"steward":"Nobody owns it; it is part of each person's body, and the treating clinician answers for its care.","roles":[],"masterSystems":[]},"relations":[{"target":"Q66554765","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.ora-serrata","Wikidata: Q2027917 (https://www.wikidata.org/wiki/Q2027917)"]},"properties":{"applicability":"required","items":["Specimen and eye identity: Subject or specimen identifier; species; right or left eye","Circumferential location: Clock-hour interval or degrees, with orientation convention and laterality","Local contour: Dentate process; ora bay; relatively smooth segment; other described contour; indeterminate","Landmark separation: Millimetres, with named reference landmark, meridian and measurement method","Retina-to-ciliary-epithelium transition: Demonstrated; partially demonstrated; inferred; not assessable","Vitreous-base relationship: Observed attachment-region boundaries relative to the ora; method; uncertainty","Local boundary integrity: Appears continuous; suspected disinsertion; confirmed disinsertion; altered by intervention; not assessable","Observed circumferential coverage: Degrees or clock-hour intervals directly assessed, with obscured intervals recorded"]},"recognition":{"applicability":"required","items":["A scalloped, saw-toothed line at the front edge of the retina seen on dissection or wide-field eye imaging.","Marks the junction between the thin retina and the smoother epithelium over the ciliary body."]},"capabilities":{"applicability":"required","items":["Annotate the ora serrata and its observed sectors on an oriented ocular image or specimen map.","Describe dentate processes, bays and unusual contours without automatically labelling them pathological.","Compare observations of the same sector across examinations while preserving differences in visibility and method.","Link suspected boundary disinsertion to a retinal-dialysis assessment record.","Request qualified review when tissue identity, continuity or a suspected break cannot be resolved."]},"hazards":{"applicability":"required","items":["Tears at or near the ora serrata, often after trauma, can lead to retinal detachment.","Its peripheral position makes changes there easy to miss on routine examination."]},"interfaces":{"applicability":"required","items":["Terminologia Anatomica, maintained by the Federative International Programme for Anatomical Terminology under the International Federation of Associations of Anatomists, standardizes the anatomical name ora serrata."]},"context":{"applicability":"required","items":["The ora serrata is encountered in ocular anatomy, peripheral retinal examination and ophthalmic surgery.","It serves as a landmark separating the photosensitive retina from the nonphotosensitive epithelial continuation over the ciliary body.","Its location helps clinicians describe peripheral retinal findings and their anatomical relationships."]}},"sources":[{"title":"Wikidata item Q2027917: ora serrata","url":"https://www.wikidata.org/wiki/Q2027917","note":"identity and sense of the item"},{"title":"Wikipedia: Ora serrata","url":"https://en.wikipedia.org/wiki/Ora_serrata","note":"general description of the item"}],"openQuestions":["Should this registry entry formally cover nonhuman ora serrata anatomy, and which species require different identifying criteria?","Which reference datasets establish normal contour and landmark-distance variation by age, meridian and ocular dimensions?","Which named ora variants should receive explicit recognition criteria, and what evidence reliably distinguishes them from retinal breaks?","What examination-specific criteria are sufficient to declare a sector fully assessed rather than merely visible in peripheral imaging?","How should developmental differences and prior ocular interventions modify interpretation of an apparent ora displacement or interruption?"],"resources":{"spec":"/models/things/publications/thing-q2027917/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q2027917/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T11:46:24Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:28+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}