Spaeth/Richman Contrast Sensitivity Test

NCT01300949

Last updated date
Study Location
Wills Eye Institute
Philadelphia, Pennsylvania, 19107, United States
Contact
1-800-718-1021

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Eligibility Criteria
condition
The disease, disorder, syndrome, illness, or injury that is being studied.
Glaucoma
Sex
Females and Males
Age
Pediatric Trials: 0-17 Years
Adult Trials: 18+ Years
18 + years
Inclusion Criteria
The factors, or reasons, that allow a person to participate in a clinical study.
Show details

- 18 yrs of age and older

- able to provide fully informed consent

70 controls (patients with no ocular disease affecting visual acuity or visual function), 10 from each decade of life: 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80+.

105 patients with ocular hypertension or any type of glaucoma (15 subjects per age decade). Glaucoma patients will not have macular degeneration or visual acuity affected by any function other than glaucoma.

40 patients with macular degeneration: 10 with visual acuity 20/40 or better, 10 with visual acuity between 20/40 and 20/60, 10between 20/100 and 20/400, and 10 with 20/400 or worse.

40 patients with cataracts: 10 with lens opacity 1+nuclear sclerosis, 10 with 2 + nuclear sclerosis, 10 with 3 + nuclear sclerosis, 10 with 4 + nuclear sclerosis.

60 patients with refractive error: 10 with myopia -5 diopters or greater, 10 with myopia between -5 and -2.5, 10 with myopia between -2.5 and -0.5, 10 with myopia between -0.5 and 0.5, 10 with myopia between 0.5 and 2.5, and 10 with myopia > 2.5.

Exclusion Criteria
The factors, or reasons, that prevent a person from participating in a clinical study.
Show details


- any other diseases affecting visual acuity

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Advanced Information
Descriptive Information
Brief Title  ICMJE Spaeth/Richman Contrast Sensitivity Test
Official Title  ICMJE Validation and Reproducibility of Spaeth/Richman Contrast Sensitivity Test
Brief Summary The Spaeth-Richman Contrast Sensitivity (SPARCS) test is a new method of assessing contrast sensitivity. The test, another way to measure vision, is performed on any standard computer with internet access. Patients will be tested with SPARCS and with the standard Pelli-Robson contrast test.
Detailed Description

Contrast Sensitivity is another way to test vision. It uses black on a white background and minimally decreases the black (grey) until it blends with the white. The least amount of contrast (faint grey) seen translates into amount of vision. This new method of determining contrast sensitivity uses black and white vertical bars and does not require recognizing letters in the alphabet. It tests various areas of the visual field and central vision. The test takes approximately 3 minutes per eye.

Pelli-Robson is a commonly used contrast sensitivity test that uses black letters on a white background. The letter size stays the same, only the amount of black changes, becoming greyer, making letters hard to see. The test takes approximately 1 minute per eye.

Hypothesis: A method of determining contrast sensitivity that does not require letter recognition (as does the Pelli-Robson test) eliminates the barriers of literacy and pattern recognition, to permit a more valid determination of contrast sensitivity.

Patients will perform SPARCS and Pelli-Robson twice; once each with two separate observers for reproducibility and intra-observer reliability. The order of testing will be randomized to SPARCS, Pelli, Pelli, SPARCS or Pelli, SPARCS, SPARCS, Pelli.

Study Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description:
Contrast sensitivity, another means of testing vision, will be measured two ways for each participant. One method uses the Pelli-Robson Contrast Sensitivity Chart which is mounted on the wall, the other method uses a new computerized program called Spaeth/Richman Contrast Sensitivity Test also known as SPARCS.
Masking: None (Open Label)
Primary Purpose: Diagnostic
Condition  ICMJE Glaucoma
Intervention  ICMJE
  • Diagnostic Test: Spaeth/Richman Contrast Sensitivity Test
    internet based computerized contrast sensitivity test measuring central and peripheral vision using black and white stripes that decrease in contrast by fading to a white background.
    Other Name: SPARCS
  • Diagnostic Test: Pelli-Robson Contrast Sensitivity Chart
    wall chart contrast sensitivity test measuring central vision using black letters that decrease in contrast by fading to a white background.
Study Arms  ICMJE
  • Active Comparator: Glaucoma
    154 glaucoma, ocular hypertension and glaucoma suspect patients will have contrast sensitivity measured by Spaeth/Richman Contrast Sensitivity Test (SPARCS) and Pelli-Robson Contrast Sensitivity Chart.
    Interventions:
    • Diagnostic Test: Spaeth/Richman Contrast Sensitivity Test
    • Diagnostic Test: Pelli-Robson Contrast Sensitivity Chart
  • Active Comparator: Controls
    125 patients with no eye diseases will have contrast sensitivity measured by Spaeth/Richman Contrast Sensitivity Test (SPARCS) and Pelli-Robson Contrast Sensitivity Chart. This included patients with refractive errors (needing glasses) and nuclear sclerosis (cataract).
    Interventions:
    • Diagnostic Test: Spaeth/Richman Contrast Sensitivity Test
    • Diagnostic Test: Pelli-Robson Contrast Sensitivity Chart
  • Active Comparator: Age-Related Macular Degeneration (ARMD)
    35 retina patients with age-related macular degeneration (ARMD) will have contrast sensitivity measured by Spaeth/Richman Contrast Sensitivity Test (SPARCS) and Pelli-Robson Contrast Sensitivity Chart.
    Interventions:
    • Diagnostic Test: Spaeth/Richman Contrast Sensitivity Test
    • Diagnostic Test: Pelli-Robson Contrast Sensitivity Chart
Publications *

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Actual Enrollment  ICMJE
 (submitted: October 11, 2018)
314
Original Estimated Enrollment  ICMJE
 (submitted: February 22, 2011)
315
Actual Study Completion Date  ICMJE April 2014
Actual Primary Completion Date April 2014   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • 18 yrs of age and older
  • able to provide fully informed consent

    70 controls (patients with no ocular disease affecting visual acuity or visual function), 10 from each decade of life: 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80+.

    105 patients with ocular hypertension or any type of glaucoma (15 subjects per age decade). Glaucoma patients will not have macular degeneration or visual acuity affected by any function other than glaucoma.

    40 patients with macular degeneration: 10 with visual acuity 20/40 or better, 10 with visual acuity between 20/40 and 20/60, 10between 20/100 and 20/400, and 10 with 20/400 or worse.

    40 patients with cataracts: 10 with lens opacity 1+nuclear sclerosis, 10 with 2 + nuclear sclerosis, 10 with 3 + nuclear sclerosis, 10 with 4 + nuclear sclerosis.

    60 patients with refractive error: 10 with myopia -5 diopters or greater, 10 with myopia between -5 and -2.5, 10 with myopia between -2.5 and -0.5, 10 with myopia between -0.5 and 0.5, 10 with myopia between 0.5 and 2.5, and 10 with myopia > 2.5.

Exclusion Criteria:

  • any other diseases affecting visual acuity
Sex/Gender  ICMJE
Sexes Eligible for Study:All
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE Yes
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT01300949
Other Study ID Numbers  ICMJE 10-998
Has Data Monitoring Committee No
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE
Plan to Share IPD:No
Plan Description:Multiple manuscripts have been published.
Responsible Party George L. Spaeth MD, Wills Eye
Study Sponsor  ICMJE Wills Eye
Collaborators  ICMJE Pfizer
Investigators  ICMJE
Principal Investigator:George L Spaeth, MDGlaucoma Service, Wills Eye Institute
PRS Account Wills Eye
Verification Date November 2018

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP