title: Refractile superficial retinal crystals and chronic retinal detachment: case report.
abstract: BACKGROUND
  Few previous reports have described the presence of retinal refractile opacities at the macular area in patients presenting with longstanding peripheral retinal detachment. The exact nature of these opacities is unknown.
  
  
  METHODS
  Two patients were referred with an abnormal appearance of refractile opacities in the macular area noted during routine examination. Both were found to have longstanding peripheral retinal detachments. Subretinal fluid analysis of one patient revealed the presence of multiple birefringent crystals. We hypothesise that these crystals are the origin of the refractile macular opacities noted.
  
  
  CONCLUSIONS
  This report describes the rare presentation of asymptomatic peripheral retinal detachment by the detection of refractile macular opacities on routine examination. It highlights the importance of meticulous peripheral retinal examination in these cases. The article also describes the findings of the subretinal fluid analysis and discusses the possible hypothesis behind their appearance.
authors.affiliation: Sunderland Eye Infirmary, Queen Alexandra Road, Sunderland, SR2 9HP, UK. mhabib_jc@yahoo.co.uk
authors.forename: Maged S
authors.initials: MS
authors.lastname: Habib
authors.forename: Sinead
authors.initials: S
authors.lastname: Byrne
authors.forename: John H
authors.initials: JH
authors.lastname: McCarthy
authors.forename: David H W
authors.initials: DH
authors.lastname: Steel
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003460:Crystallization; D005654:Fundus Oculi; D006801:Humans; D008266:Macula Lutea / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D012163:Retinal Detachment / Q000150:complications* / Q000175:diagnosis / Q000378:metabolism*; D012164:Retinal Diseases / Q000150:complications* / Q000175:diagnosis / Q000378:metabolism*; D012542:Scattering, Radiation; D041623:Tomography, Optical Coherence