Towards Worldwide Comparability of Visual Acuity Assessment (VisComp)
Towards Worldwide Comparability of Visual Acuity Assessment A Pilot Study Comparing ETDRS Visual Acuity Charts, Projected Landolt Charts and the Freiburg Visual Acuity Test (FrACT) With a View to Developing a Mathematical Transformation Routine Between the Results From These Three Tests
Sponsor: University Hospital Tuebingen
This observational or N/A phase trial investigates Comparison of Visual Acuity Tests. and ETDRS. FrACT. Landolt Rings. and is currently ongoing. University Hospital Tuebingen leads this study, which shows 6 recorded versions since 2011 — indicating limited longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.
Status Flow
Change History
6 versions recorded-
Sep 2025 — Present [monthly]
Unknown
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Sep 2024 — Sep 2025 [monthly]
Unknown
-
Jul 2024 — Sep 2024 [monthly]
Unknown
Status: Unknown Status → Unknown
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Jan 2021 — Jul 2024 [monthly]
Unknown Status
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Apr 2018 — Jan 2021 [monthly]
Unknown Status
Phase: NA → None
▶ Show 1 earlier version
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Jan 2017 — Apr 2018 [monthly]
Unknown Status NA
First recorded
Mar 2011
Trial started
Per CT.gov start date — pre-dates our first snapshot
Eligibility Summary
No eligibility information available.
Contact Information
- University Hospital Tuebingen
- University of Freiburg
For direct contact, visit the study record on ClinicalTrials.gov .