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Toxic amblyopia associated with Crohn's disease

J G Douglas, A Douglas, R S Bartholomew

    Ophthalmologica. Journal International D'Ophtalmologie. International Journal of Ophthalmology. Zeitschrift Fur Augenheilkunde
    |January 1, 1982
    PubMed
    Summary

    Toxic amblyopia, a form of vision loss, should be suspected in patients with Crohn's disease and visual impairment. This condition is linked to vitamin B12 malabsorption, often seen in patients with terminal ileal disease.

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    Area of Science:

    • Ophthalmology
    • Gastroenterology
    • Neurology

    Background:

    • Crohn's disease is a chronic inflammatory condition impacting the gastrointestinal tract.
    • Vitamin B12 malabsorption is a known complication, particularly with terminal ileal involvement.
    • Smoking is a significant risk factor for various health issues, including potential ocular complications.

    Observation:

    • A 71-year-old female lifelong smoker with a 13-year history of Crohn's disease presented with progressive vision failure.
    • The patient exhibited vitamin B12 malabsorption refractory to intrinsic factor supplementation.
    • This clinical presentation suggests a potential link between the patient's underlying conditions and visual impairment.

    Findings:

    • The patient's failing vision, in the context of Crohn's disease and vitamin B12 deficiency, points towards toxic amblyopia.

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  • Toxic amblyopia is a plausible diagnosis when visual impairment is observed in conjunction with terminal ileal disease.
  • This case highlights the importance of considering neurological and ophthalmological etiologies in patients with complex gastrointestinal disorders.

    • Implications:

    • Ophthalmologists and gastroenterologists should consider toxic amblyopia in patients presenting with visual disturbances and a history of Crohn's disease, especially with terminal ileal involvement.
    • Further research is warranted to elucidate the precise mechanisms linking Crohn's disease, vitamin B12 malabsorption, and toxic amblyopia.
    • Early recognition and management of toxic amblyopia may help prevent irreversible vision loss in affected individuals.