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Related Experiment Videos

Asymmetric canthaxanthin retinopathy

T S Chang1, W Aylward, J G Clarkson

  • 1Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami, USA.

American Journal of Ophthalmology
|June 1, 1995
PubMed
Summary

Prolonged oral canthaxanthin use can cause crystalline retinopathy. A patient with this condition also developed a branch retinal vein occlusion, potentially worsening the retinopathy due to local stasis.

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Area of Science:

  • Ophthalmology
  • Toxicology
  • Retinal Diseases

Background:

  • Canthaxanthin is a carotenoid used orally as a tanning agent and food colorant.
  • Crystalline retinopathy is a rare condition characterized by the deposition of crystals in the retina.

Observation:

  • A case study of a patient with crystalline retinopathy following prolonged oral canthaxanthin intake.
  • The patient experienced a branch retinal vein occlusion in the left eye during a 38-month follow-up period.

Findings:

  • Asymmetric crystalline deposition was observed, with greater sedimentation in the left eye.
  • Vascular changes associated with branch retinal vein occlusion may contribute to local stasis, exacerbating canthaxanthin retinopathy.

Implications:

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  • This case highlights a potential interaction between vascular events and drug-induced retinopathy.
  • Understanding these interactions is crucial for managing patients with crystalline retinopathy and co-existing vascular conditions.