title: Ultraviolet fluorescence photography: patterns in established pterygia.
abstract: OBJECTIVE
  To investigate established pterygia using our newly developed ultraviolet fluorescence photography (UVFP) system.
  
  
  METHODS
  Prospective observational case series.
  
  
  METHODS
  setting: Prince of Wales Hospital, Sydney, Australia. study population: Fourteen patients (both eyes) attending the Ophthalmology Clinic at Prince of Wales Hospital for assessment of their established pterygia. There were eight men and six women, with an age range of 26 to 62 years. A total of 15 (75%) of 20 had primary pterygia, and five (25%) of 20 had recurrent pterygia. There were no specific exclusion criteria. observation procedures: Ultraviolet and standard (control) photographs were taken of the nasal and temporal interpalpebral regions bilaterally. main outcome measures: The presence of established pterygia detected by standard photography and the corresponding presence and patterns of areas of fluorescence detected by UVFP.
  
  
  RESULTS
  In the 14 patients, 20 established pterygia were identified on standard photography. On UVFP, four patterns of fluorescence of established pterygia were identified. Of the 20 pterygia, six (30%) of 20 demonstrated fluorescence at the leading edge of the pterygium, seven (35%) of 20 demonstrated fluorescence at the limbus, three (15%) of 20 demonstrated fluorescence at both the leading edge and the limbus, and four (20%) of 20 demonstrated no visible fluorescence.
  
  
  CONCLUSIONS
  In this study, we describe patterns of fluorescence in established pterygia by UVFP. We hypothesize that the areas of fluorescence represent areas of cellular activity within the pterygium. The patterns of fluorescence may be useful to further understand of pterygium growth and pathogenesis.
authors.affiliation: Department of Ophthalmology, Prince of Wales Hospital, Sydney, New South Wales, Australia.
authors.forename: Ju-Lee
authors.initials: JL
authors.lastname: Ooi
authors.forename: Neil S
authors.initials: NS
authors.lastname: Sharma
authors.forename: Shanel
authors.initials: S
authors.lastname: Sharma
authors.forename: Daya
authors.initials: D
authors.lastname: Papalkar
authors.forename: Mike
authors.initials: M
authors.lastname: Oakey
authors.forename: Pamela
authors.initials: P
authors.lastname: Dawes
authors.forename: Minas T
authors.initials: MT
authors.lastname: Coroneo
mesh_terms: D000328:Adult; D005260:Female; D005453:Fluorescence; D006801:Humans; D008297:Male; D008875:Middle Aged; D010781:Photography / Q000379:methods*; D011446:Prospective Studies; D011625:Pterygium / Q000145:classification / Q000473:pathology*; D014466:Ultraviolet Rays