Towards Worldwide Comparability of Visual Acuity Assessment
NCT ID: NCT01312662
Last Updated: 2011-03-11
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
84 participants
OBSERVATIONAL
2011-03-31
Brief Summary
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Detailed Description
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Purpose of this study is to investigate the agreement, the test-retest reliability of three established and widely used visual acuity tests, i.e., the Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity charts, a conventional projected distant visual acuity test according to DIN 58220 part 3, and the Freiburg visual acuity test (FrACT), 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.
Conditions
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Study Design
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CASE_CONTROL
PROSPECTIVE
Study Groups
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normal ophthalmological status
No interventions assigned to this group
opacity of the refractive media
No interventions assigned to this group
maculopathy
No interventions assigned to this group
optic neuropathy
No interventions assigned to this group
chiasmal and postchiasmal visual pathway pathologies
No interventions assigned to this group
amblyopia (deprivation)
No interventions assigned to this group
amblyopia (strabism)
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* normal ophthalmological status,
* opacity of the refractive media,
* maculopathy,
* optic neuropathy
* chiasmal and postchiasmal visual pathway pathologies,
* amblyopia (deprivation),
* amblyopia (strabism)
Exclusion Criteria
* concomitance of different eye-diseases
18 Years
ALL
Yes
Sponsors
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University of Freiburg
OTHER
University Hospital Tuebingen
OTHER
Responsible Party
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Institute for Ophthalmic Research, University of Tübingen
Locations
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Institute for Ophthalmic Research, University of Tuebingen
Tübingen, , Germany
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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VisComp01
Identifier Type: -
Identifier Source: org_study_id
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