title: Comparison of Peristat Online Perimetry with the Humphrey Perimetry in a Clinic-Based Setting.
abstract: OBJECTIVE
  We determined the receiver operating characteristic (ROC) curves for Peristat online perimetry at detecting varying degrees of glaucoma and the correlation between Peristat online perimetry and Humphrey visual field.
  
  
  METHODS
  A prospective, comparative study of Peristat online perimetry (an achromatic static computer threshold testing program) and Humphrey visual field (HVF) 24-2 SITA standard testing was performed by 63 glaucoma patients and 30 healthy controls in random order. The number of total adjacent abnormal test points were identified for each test, and compared with Spearman correlation. Receive operating characteristic curves were generated for Peristat online perimetry detection of mild and moderate-severe glaucoma patients using contrast sensitivity thresholds of -16.7, -21.7, and -26.7 dB.
  
  
  RESULTS
  The area under the ROC curve for glaucoma detection ranged from 0.77 to 0.81 for mild disease (mean deviation [MD], >-6 dB on HVF) and 0.85 to 0.87 for moderate to severe disease (MD, <-6 dB on HVF) depending on contrast threshold. Peristat online perimetry and Humphrey visual field abnormal points were highly correlated with Spearman rank correlations ranging from 0.55 to 0.77 (allP< 0.001).
  
  
  CONCLUSIONS
  Peristat online perimetry exhibits a reasonable ROC curve without specialized equipment and exhibited significant correlation with the conventional 24° Humphrey visual field test.
  
  
  CONCLUSIONS
  Low cost widely available internet-based visual fields may complement traditional office-based visual field testing.
authors.affiliation: Department of Ophthalmology, University of California-San Francisco, San Francisco, CA, USA.
authors.forename: Eugene A
authors.initials: EA
authors.lastname: Lowry
authors.affiliation: Department of Ophthalmology, Peking University People's Hospital, Beijing, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Hou
authors.affiliation: Department of Ophthalmology, University of California-San Francisco, San Francisco, CA, USA.
authors.forename: Lauren
authors.initials: L
authors.lastname: Hennein
authors.affiliation: Department of Ophthalmology, Stanford University, Stanford, CA, USA.
authors.forename: Robert T
authors.initials: RT
authors.lastname: Chang
authors.affiliation: Department of Ophthalmology, University of California-San Francisco, San Francisco, CA, USA.
authors.forename: Shan
authors.initials: S
authors.lastname: Lin
authors.affiliation: Department of Ophthalmology, University of California-San Francisco, San Francisco, CA, USA.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Keenan
authors.affiliation: Department of Ophthalmology, Stanford University, Stanford, CA, USA.
authors.forename: Sean K
authors.initials: SK
authors.lastname: Wang
authors.affiliation: KeepYourSight Foundation, San Francisco, CA, USA.
authors.forename: Sean
authors.initials: S
authors.lastname: Ianchulev
authors.affiliation: Department of Ophthalmology: Harvard Medical School, Boston, MA, USA ; Division of Network Medicine: Brigham and Women's Hospital, Boston, MA, USA.
authors.forename: Louis R
authors.initials: LR
authors.lastname: Pasquale
authors.affiliation: Department of Ophthalmology, University of California-San Francisco, San Francisco, CA, USA.
authors.forename: Ying
authors.initials: Y
authors.lastname: Han
keywords: glaucoma; online; perimetry; visual field