title: SPARCS and Pelli-Robson contrast sensitivity testing in normal controls and patients with cataract.
abstract: PurposeTo determine the ability of the newly developed internet-based Spaeth/Richman Contrast Sensitivity (SPARCS) test to assess contrast sensitivity centrally and peripherally in cataract subjects and controls, in comparison with the Pelli-Robson (PR) test.MethodsIn this prospective cross-sectional study, cataract subjects and age-matched normal controls were evaluated using the SPARCS and PR tests. Contrast sensitivity testing was performed in each eye twice in a standardized testing environment in randomized order. SPARCS scores were obtained for central, right upper (RUQ), right lower (RLQ), left upper (LUQ), and left lower quadrants (LLQ). PR scores were obtained for central contrast sensitivity. PR and SPARCS scores in cataract subjects were compared with controls. Intraclass correlation coefficients (ICC) and Bland Altman analysis were used to determine test-retest reliability and correlation.ResultsA total of 162 eyes from 84 subjects were analyzed: 43 eyes from 23 cataract subjects, and 119 eyes from 61 controls. The mean scores for SPARCS centrally were 13.4 and 14.5 in the cataract and control groups, respectively (P=0.001). PR mean scores were 1.31 and 1.45 in cataract and control groups, respectively (P<0.001). ICC values for test-retest reliability for cataract subjects were 0.75 for PR and 0.61 for the SPARCS total. There was acceptable agreement between the ability of PR and SPARCS to detect the effect of cataract on central contrast sensitivity.ConclusionsBoth SPARCS and PR demonstrate a significant influence of cataract on contrast sensitivity. SPARCS offers the advantage of determining contrast sensitivity peripherally and centrally, without being influenced by literacy.
authors.affiliation: George Washington University School of Medicine, Washington, DC, USA.
authors.forename: L
authors.initials: L
authors.lastname: Gupta
authors.affiliation: Instituto de Oftalmologia Tadeu Cvintal, Sao Paulo, Brazil.
authors.forename: V
authors.initials: V
authors.lastname: Cvintal
authors.affiliation: Department of Anesthesiology, George Washington University Hospital, Washington, DC, USA.
authors.forename: R
authors.initials: R
authors.lastname: Delvadia
authors.affiliation: Department of Ophthalmology, The Third People's Hospital of Chengdu, Sichuan, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Faculty of Medicine, Department of Ophthalmology, University of Cukurova, Adana, Turkey.
authors.forename: E
authors.initials: E
authors.lastname: Erdem
authors.affiliation: Department of Ophthalmology, State University of Campinas, Sao Paulo, Brazil.
authors.forename: C
authors.initials: C
authors.lastname: Zangalli
authors.affiliation: Department of Ophthalmology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
authors.forename: L
authors.initials: L
authors.lastname: Lu
authors.affiliation: Glaucoma Research Center, Wills Eye Hospital, Philadelphia, PA, USA.
authors.forename: S S
authors.initials: SS
authors.lastname: Wizov
authors.affiliation: Glaucoma Research Center, Wills Eye Hospital, Philadelphia, PA, USA.
authors.forename: J
authors.initials: J
authors.lastname: Richman
authors.affiliation: Independent Researcher, Philadelphia, PA, USA.
authors.forename: E
authors.initials: E
authors.lastname: Spaeth
authors.affiliation: Glaucoma Research Center, Wills Eye Hospital, Philadelphia, PA, USA.
authors.forename: G L
authors.initials: GL
authors.lastname: Spaeth
mesh_terms: D000368:Aged; D002386:Cataract / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology*; D015350:Contrast Sensitivity / Q000502:physiology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D020407:Internet; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D014786:Vision Disorders / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D014787:Vision Tests / Q000379:methods*; D014792:Visual Acuity