May 2004
Volume 45, Issue 13
ARVO Annual Meeting Abstract  |   May 2004
A Comprehensive System for Pterygium Classification
Author Affiliations & Notes
  • S.C. Johnston
    Ophthalmology, Eastern Virginia Med Sch, Norfolk, VA
  • P.B. Williams
    EyeRx Research Inc., Norfolk, VA
  • J.D. Sheppard
    Ophthalmology, Eastern Virginia Med Sch, Norfolk, VA
  • Jr
    EyeRx Research Inc., Norfolk, VA
  • Footnotes
    Commercial Relationships  S.C. Johnston, None; P.B. Williams, None; J.D. Sheppard, Jr, None.
  • Footnotes
    Support  none
Investigative Ophthalmology & Visual Science May 2004, Vol.45, 2940. doi:
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      S.C. Johnston, P.B. Williams, J.D. Sheppard, Jr; A Comprehensive System for Pterygium Classification . Invest. Ophthalmol. Vis. Sci. 2004;45(13):2940.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract: : Introduction:An adequate standardized classification systemfor pterygium has not been identified. Clinicians currentlymeasure radial and limbal dimensions of corneal involvementand assess serial progression. Other characteristics, however,may better predict future behavior and response to treatmentssuch as topical steroids, topical anti–metabolites, betairradiation, anti–VEGF drugs, laser and photodynamic therapy,and surgical excision.Methods: 

 Results:A typical pterygium was described as Stage II, V2, C2,K2, P2, or an irritated red pingeuculum described as Stage O,V3, C3 from standardized photographs and slit lamp. Reproducibilitywas assessed by three knowledgeable graders. Results over athree month period were compared to the standard length, measurementgrading system. This system was used to analyze progressionor response to treatment and descriptive accuracy.Conclusions: This unique semiquantitative approach providesuniform standards that provide an overall rating based uponthe progression (or in the case of therapy, regression) of thepterygium as well as a more detailed description of importantcharacteristics of each pterygium. The detailed descriptorsmay be important predictors of response to a specific therapy.

Keywords: Pterygium • clinical (human) or epidemiologic studies: systems/equipment/techniques • conjunctiva 

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