Ignite Creation Date:
2024-05-05 @ 11:18 PM
Last Modification Date:
2024-10-26 @ 10:31 AM
Study NCT ID:
NCT01300949
Status:
COMPLETED
Last Update Posted:
2018-12-11
First Post:
2011-02-22
Brief Title:
SpaethRichman Contrast Sensitivity Test
Sponsor:
Wills Eye
Organization:
Wills Eye
Study Overview
Official Title:
Validation and Reproducibility of SpaethRichman Contrast Sensitivity Test
Status:
COMPLETED
Status Verified Date:
2018-11
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
SPARCS
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
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 Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None