{
  "abstract": "Optic nerve head avulsion (ONA) is a rare and devastating complication of ocular trauma, typically involving the retraction of the optic nerve behind the ocular wall. While posterior ONA is well-documented, cases occurring anterior to the lamina cribrosa have not been previously reported. We present a unique case of anterior ONA associated with total retinal detachment (RD). A 4-year-old boy presented with no light perception (NLP) in his left eye after blunt ocular trauma in a fall down a staircase. Initial B-scan ultrasonography and orbital computed tomography (CT) scans revealed vitreous hemorrhage and RD but no obvious retrobulbar optic nerve discontinuity. During pars plana vitrectomy, a total RD with a large peripheral retinal tear was identified. The optic nerve head was absent from its expected anatomical position, with no recognizable prelaminar optic nerve tissue overlying the exposed, intact-appearing lamina cribrosa, supporting complete ONA anterior to the lamina cribrosa. Partial retinal reattachment was achieved using endolaser photocoagulation and silicone oil tamponade. The patient's vision remained NLP on postoperative day 1, and no longer-term follow-up was available. This case illustrates that ONA at the prelaminar level may not be definitively identified by preoperative ultrasonography or CT, particularly with dense vitreous hemorrhage and associated RD. ONA should therefore be considered in the differential diagnosis of profound visual loss after blunt ocular trauma even when preoperative imaging shows no retrobulbar optic nerve discontinuity.",
  "abstract_shown": true,
  "affiliations": [
    "State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.",
    "Department of Ophthalmology, Shenzhen Nanshan People's Hospital, Shenzhen, China.",
    "School of Optometry, The Hong Kong Polytechnic University, Hong Kong, China."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Mingge Li"
    },
    {
      "affs": [
        2
      ],
      "name": "Yanxian Chen"
    },
    {
      "affs": [
        0
      ],
      "name": "Liwen He"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/88c86nykbvp9g.bib",
  "cited_by": 0,
  "doi": "10.21037/tp-2026-0722",
  "fulltext_url": "https://europepmc.org/articles/PMC13739848",
  "id": "88c86nykbvp9g",
  "issns": [
    "2224-4336",
    "2224-4344"
  ],
  "landing_url": "https://europepmc.org/article/MED/42996414",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2731|Traumatic Ocular and Foreign Body Injuries"
    ]
  ],
  "openalex": "W7223274051",
  "pdf_url": "https://europepmc.org/articles/PMC13739848?pdf=render",
  "pmcid": "PMC13739848",
  "pmid": "42996414",
  "published": "2026-10-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/88c86nykbvp9g.ris",
  "sources": [
    {
      "first_seen": "2026-11-09T15:20:41Z",
      "native_id": "MED:42996414",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42996414"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2731|Traumatic Ocular and Foreign Body Injuries",
      "subfield": "general"
    }
  ],
  "title": "Traumatic optic nerve head avulsion anterior to the lamina cribrosa in a child: a case report.",
  "title_text": "Traumatic optic nerve head avulsion anterior to the lamina cribrosa in a child: a case report.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T15:20:41Z",
  "url": "https://research.draconitic.com/paper/88c86nykbvp9g",
  "venue": "Translational pediatrics",
  "versions": []
}