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More info
You can access this
clinical trial
if you have
Comparison of Visual Acuity Tests. or ETDRS. FrACT. Landolt Rings.
and you are
over 18
years old
This is an observational trial.
You are contributing to medical knowledge about your condition.
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The purpose

Purpose of this study is to investigate the agreement, the test-retest reliability of three established and widely used visual acuity tests, to develop a mathematical transformation routine between the results from these three tests, to assess the examinees´ and examiners´ acceptance and to compare the test durations.

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01312662. The sponsor of the trial is University Hospital Tuebingen and it is looking for 84 volunteers for the current phase.
Official trial title:
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