title: Asymmetric canthaxanthin retinopathy.
abstract: OBJECTIVE
  We studied a case of crystalline retinopathy occurring after prolonged use of oral canthaxanthin. The patient was followed up for 38 months during which time she sustained a branch retinal vein occlusion in her left eye.
  
  
  CONCLUSIONS
  An asymmetric appearance to the crystalline deposition was noted with increased sedimentation seen in the left eye. Vascular alterations after a branch retinal vein occlusion may lead to local stasis that may exacerbate the development of canthaxanthin retinopathy.
authors.affiliation: Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami, USA.
authors.forename: T S
authors.initials: TS
authors.lastname: Chang
authors.forename: W
authors.initials: W
authors.lastname: Aylward
authors.forename: J G
authors.initials: JG
authors.lastname: Clarkson
authors.forename: J D
authors.initials: JD
authors.lastname: Gass
mesh_terms: D016644:Canthaxanthin / Q000009:adverse effects*; D003460:Crystallization; D005260:Female; D005500:Follow-Up Studies; D005654:Fundus Oculi; D006801:Humans; D008875:Middle Aged; D012160:Retina / Q000473:pathology; D012164:Retinal Diseases / Q000139:chemically induced* / Q000473:pathology; D012170:Retinal Vein Occlusion / Q000139:chemically induced / Q000473:pathology; D014792:Visual Acuity
chemical_list: D016644:Canthaxanthin