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PubMed This is a summary of 19 peer-reviewed journal articles Updated
Ophthalmology

Vision, Hearing, Respiratory, and Anesthesia Safety

At a Glance

Spondyloepiphyseal dysplasia congenita (SEDC) affects type II collagen throughout the body. Patients need regular monitoring for retinal detachment, hearing loss, and sleep apnea. Due to neck instability, any surgery requires specialized anesthesia with neutral neck positioning.

While the name Spondyloepiphyseal Dysplasia Congenita (SEDC) highlights bone and spine issues, the condition also affects other parts of the body that rely on Type II collagen. This protein is essential for the structure of the eyes, the inner ear, the roof of the mouth, and even impacts respiratory development. Comprehensive care must include regular screenings for vision, hearing, respiratory health, and highly specialized planning for medical procedures [1][2].

Vision Care and the Risk of Retinal Detachment

In individuals with SEDC, the clear gel (vitreous) inside the eye may be less stable. This often leads to high myopia (severe nearsightedness) and a significant risk of retinal detachment [1][3]. A retinal detachment occurs when the light-sensitive layer at the back of the eye pulls away from its supporting tissue. If not treated quickly, it can lead to permanent vision loss [4].

Because young children may not be able to describe “flashes” or “floaters,” watch for:

  • Sudden squinting or sitting much closer to screens.
  • Bumping into furniture or appearing “clumsy” in ways that are new.
  • An eye that seems to wander or cross (strabismus).
  • Any unusual gray or dark “curtain” appearing in the field of vision [5].

Recommendation: Regular exams with an ophthalmologist familiar with COL2A1 disorders are essential. Some specialists may recommend prophylactic retinopexy (a laser treatment) to help secure the retina and reduce the risk of future detachment [6][7].

Hearing and Cleft Palate

Type II collagen is found in the cartilage of the inner ear and the tiny bones (ossicles) that transmit sound [8].

  • Hearing Loss: Individuals with SEDC can experience sensorineural hearing loss (damage to the inner ear) or conductive hearing loss (often due to fluid in the ear) [9]. Regular audiologic tests are a standard part of care [10].
  • Cleft Palate: Some infants with SEDC are born with a cleft palate (an opening in the roof of the mouth) [1][11]. This can affect feeding and speech and is typically managed by a multidisciplinary craniofacial team [12].

Respiratory Health: Beyond Sleep Apnea

Respiratory monitoring is crucial in SEDC. Because of how the ribs and spine develop, individuals often have a short, barrel-shaped chest (such as pectus carinatum or pectus excavatum). This altered chest wall shape can prevent the lungs from expanding fully, leading to restrictive lung disease [13].

Additionally, due to differences in facial and airway structure, obstructive sleep apnea (OSA) is common. A pulmonologist should be involved to monitor both lung capacity and sleep health, ensuring that breathing issues are proactively managed [14].

Crucial Anesthesia Safety

If surgery is required for any reason—whether for ear tubes, cleft palate repair, or orthopedics—the anesthesia plan must be highly specialized. Because of atlantoaxial instability (potential weakness in the upper neck), traditional methods of placing a breathing tube (intubation) could put dangerous pressure on the spinal cord [15][16].

To ensure safety, anesthesiologists should:

  • Use Video Laryngoscopy: This technology allows the doctor to see the airway on a screen, reducing the need to tilt the head back [15].
  • Ensure Neutral Positioning: The neck must be kept in a “neutral” (straight) position throughout the procedure to avoid strain [15][17].
  • Individualized Planning: Every procedure should involve a pre-operative discussion about the specific spinal stability [15].

By coordinating with specialists in ophthalmology, audiology, pulmonology, and anesthesiology, you can proactively manage these systemic risks and provide the safest possible care environment [18][19].

Common questions in this guide

Why do children with SEDC need regular eye exams?
Children with SEDC have a high risk of severe nearsightedness and retinal detachment because the condition affects the collagen in the eye. Regular exams with a specialist can catch issues early and may involve preventive laser treatments to secure the retina.
How does SEDC affect hearing?
SEDC can cause both sensorineural hearing loss from inner ear damage and conductive hearing loss due to fluid in the ears. Because type II collagen is essential for inner ear structure, regular hearing tests are a vital part of ongoing care.
What breathing problems are common in SEDC?
The barrel-shaped chest common in SEDC can prevent lungs from expanding fully, leading to restrictive lung disease. Differences in facial and airway structure also make obstructive sleep apnea common, requiring regular monitoring by a pulmonologist.
Why is anesthesia potentially dangerous for someone with SEDC?
Many individuals with SEDC have atlantoaxial instability, meaning the upper neck is weak. Traditional methods of placing a breathing tube require tilting the head back, which could dangerously compress the spinal cord.
How can anesthesia be administered safely to a patient with SEDC?
To protect the spinal cord, anesthesiologists should keep the patient's neck in a strict neutral position. They should also use video laryngoscopy, which allows them to see the airway on a screen without needing to tilt the head back.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Who is a pediatric ophthalmologist in our area with experience in COL2A1 disorders or retinal detachment risk?
  2. 2.What is the exact schedule for hearing tests, and what type of hearing loss are we monitoring for?
  3. 3.If surgery is needed, how will the anesthesia team ensure the neck is kept stable during the procedure?
  4. 4.Will the anesthesiologist use a video laryngoscope to help protect the airway and spine?
  5. 5.Should we be monitoring lung capacity and chest wall development, given the risk of restrictive lung disease?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (19)
  1. 1

    Novel COL2A1 variants in Japanese patients with spondyloepiphyseal dysplasia congenita.

    Akahira-Azuma M, Enomoto Y, Nakamura N, et al.

    Human genome variation 2022; (9(1)):16 doi:10.1038/s41439-022-00193-x.

    PMID: 35581182
  2. 2

    Radiologic Features of Type II and Type XI Collagenopathies.

    Handa A, Grigelioniene G, Nishimura G

    Radiographics : a review publication of the Radiological Society of North America, Inc 2021; (41(1)):192-209 doi:10.1148/rg.2021200075.

    PMID: 33186059
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    Genetic and clinical profile of high myopia patients with rhegmatogenous retinal detachment.

    Zhou L, Boboev F, Chen H, et al.

    Frontiers in genetics 2025; (16()):1485874 doi:10.3389/fgene.2025.1485874.

    PMID: 40270540
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    [Primary Diseases of 393 Cases of Pediatric Retinal Detachment and the Distribution of Clinical Characteristics].

    Wang PP, Liu LQ

    Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition 2021; (52(6)):1016-1021 doi:10.12182/20211160305.

    PMID: 34841771
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    Time to Treatment of Pediatric Retinal Detachments: A US Claims-based Analysis.

    Archambault C, Azad AD, Al-Moujahed A, et al.

    Ophthalmology. Retina 2023; (7(3)):221-226 doi:10.1016/j.oret.2022.08.017.

    PMID: 36002094
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    Prevention of Blindness in Stickler Syndrome.

    Alexander P, Snead MP

    Genes 2022; (13(7)) doi:10.3390/genes13071150.

    PMID: 35885933
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    Stickler syndrome: exploring prophylaxis for retinal detachment.

    Coussa RG, Sears J, Traboulsi EI

    Current opinion in ophthalmology 2019; (30(5)):306-313 doi:10.1097/ICU.0000000000000599.

    PMID: 31313752
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    COL2A1 Gene Mutations: Mechanisms of Spondyloepiphyseal Dysplasia Congenita.

    Nenna R, Turchetti A, Mastrogiorgio G, Midulla F

    The application of clinical genetics 2019; (12()):235-238 doi:10.2147/TACG.S197205.

    PMID: 31824186
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    Discovery of sensorineural hearing loss and ossicle deformity in a Chinese Li nationality family with spondyloepiphyseal dysplasia congenita caused by p.G504S mutation of COL2A1.

    Wu K, Li Z, Zhu Y, et al.

    BMC medical genomics 2021; (14(1)):170 doi:10.1186/s12920-021-01020-y.

    PMID: 34182999
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    A study of the clinical and radiological features in a cohort of 93 patients with a COL2A1 mutation causing spondyloepiphyseal dysplasia congenita or a related phenotype.

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    American journal of medical genetics. Part A 2015; (167A(3)):461-75 doi:10.1002/ajmg.a.36922.

    PMID: 25604898
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    A novel COL2A1 mutation causing spondyloepiphyseal dysplasia congenita in a Chinese family.

    Zhou T, Yang X, Chen Z, et al.

    Journal of clinical laboratory analysis 2021; (35(4)):e23728 doi:10.1002/jcla.23728.

    PMID: 33590889
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    Feeding difficulty in an infant: an unusual cause.

    Qadri SK, Logarajah V, Nah SA, Jamuar SS

    BMJ case reports 2018; (2018()) doi:10.1136/bcr-2018-225289.

    PMID: 30139785
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    Surgical treatment of atlantoaxial dysplasia and scoliosis in spondyloepiphyseal dysplasia congenita: A case report.

    Jiao Y, Zhao JD, Huang XA, et al.

    World journal of orthopedics 2023; (14(11)):827-835 doi:10.5312/wjo.v14.i11.827.

    PMID: 38075470
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    Evaluation of polysomnography findings in children with genetic skeletal disorders.

    Nayır Büyükşahin H, Emiralioglu N, Simşek Kiper PÖ, et al.

    Journal of sleep research 2023; (32(5)):e13914 doi:10.1111/jsr.13914.

    PMID: 37128177
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    General Anesthetic Management of a Patient With Spondyloepiphyseal Dysplasia Congenita Undergoing Palatoplasty Revision.

    Hattori H, Sato Boku A, Kanazawa M, et al.

    Anesthesia progress 2024; (71(1)):19-23 doi:10.2344/23-0005.

    PMID: 39503126
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    The Managment of cervical spine abnormalities in children with spondyloepiphyseal dysplasia congenita: Observational study.

    Al Kaissi A, Ryabykh S, Pavlova OM, et al.

    Medicine 2019; (98(1)):e13780 doi:10.1097/MD.0000000000013780.

    PMID: 30608389
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    Cervical Spine Injury From Unrecognized Craniocervical Instability in Severe Pierre Robin Sequence Associated With Skeletal Dysplasia.

    Zhu X, Evans KN, El-Gharbawy A, et al.

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    PMID: 29489401
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    Challenges and solutions in the treatment of spinal disorders in patients with skeletal dysplasia: A comprehensive review.

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This page provides general safety and care guidelines for SEDC for educational purposes only. Always consult your child's multidisciplinary medical team for individualized care and prior to any surgical procedures.

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