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Humphrey® Glaucoma Progression Analysis™ (GPA ™ ) Software for the Humphrey® Field Analyzer
[object Object],[object Object],[object Object],[object Object],[object Object],Need for Glaucoma Progression Analysis Using Visual Fields
Introducing Humphrey® Glaucoma Progression Analysis™ Software ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1. Heijl, Leske,Bengtsson, Bengtsson,Hussein, and the Early Manifest Glaucoma Trial Group. Measuring Visual Field Progression in the Early Manifest Glaucoma Trial. Acta Ophthalmol Scand. 2003; 81:286-293
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Tested Threshold Retested Threshold Impaired Vision Not  Progressing Perfect Test Resul t Test-Retest Variability Normal Vision Identifying Progression in Visual Fields Progressing Impaired Normal ,[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],Criteria For Identifying Progression in Visual Fields = Progression at 95% significance level = Progressing point repeated in two consecutive exams = Progressing point repeated in three consecutive exams
Applying GPA To Your Practice: Setting Up An Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Applying GPA To Your Practice: Selecting GPA ,[object Object]
Applying GPA To Your Practice: Selecting Your GPA Print Options ,[object Object],[object Object],[object Object]
Applying GPA To Your Practice: Baseline and Follow-Up Exam Selection ,[object Object],[object Object],[object Object],[object Object],Baseline Follow-up Exam with High False Positive Rate
Typical GPA Result 11/27/97 4/18/01 12/15/98 4/18/02 11/20/02 Baseline Follow-up Multiple Exams Rate of Progression Plot
GPA Follow-Up Printout Overview ,  , and  identify change and repeatable change Gray Scale Plot Pattern Deviation Probability Plot Deviation from Baseline (Pattern Deviation dB) Plain Language Interpretation of Analysis:  “ Possible Progression ” or “ Likely Progression ” Reliability Indices  for each exam **Low Test Reliability** Sample warning:  Check reliability indices
Single Field Analysis with GPA Results ,[object Object],[object Object],[object Object],GPA on Single Field Printout
Case Study 1: Finding Progression GPA confirms repeatable, consistent change is seen at five points in the field Pattern Deviation Probability Plot appears variable or even improving
Case Study 2: Sorting Out Variability GPA Identifies Changes, but not at consistent points in the field and therefore not Confirmed Progression Pattern Deviation shows variability, but maybe some consistency between Follow-up #1 and #3
Availability ,[object Object],[object Object],[object Object],[object Object],[object Object]

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Humphrey GPA Software Detects Glaucoma Progression

  • 1. Humphrey® Glaucoma Progression Analysis™ (GPA ™ ) Software for the Humphrey® Field Analyzer
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  • 10. Typical GPA Result 11/27/97 4/18/01 12/15/98 4/18/02 11/20/02 Baseline Follow-up Multiple Exams Rate of Progression Plot
  • 11. GPA Follow-Up Printout Overview , , and identify change and repeatable change Gray Scale Plot Pattern Deviation Probability Plot Deviation from Baseline (Pattern Deviation dB) Plain Language Interpretation of Analysis: “ Possible Progression ” or “ Likely Progression ” Reliability Indices for each exam **Low Test Reliability** Sample warning: Check reliability indices
  • 12.
  • 13. Case Study 1: Finding Progression GPA confirms repeatable, consistent change is seen at five points in the field Pattern Deviation Probability Plot appears variable or even improving
  • 14. Case Study 2: Sorting Out Variability GPA Identifies Changes, but not at consistent points in the field and therefore not Confirmed Progression Pattern Deviation shows variability, but maybe some consistency between Follow-up #1 and #3
  • 15.