NCT00612781|CompletedPhase 4
Yellow Versus White Study
YeWhi
Influence of Blue-Light-Filter IOLs on Color Perception and Contrast Acuity. A Randomized, Double-Masked Study With Intraindividual Comparison.
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YeWhi
Influence of Blue-Light-Filter IOLs on Color Perception and Contrast Acuity. A Randomized, Double-Masked Study With Intraindividual Comparison.
Sponsor study identifier
interventional
24
1 country
1
Study Start
December 2005
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
February 2007
Actual (reported)Study Completion
May 2007
Actual (reported)Blue-light-filtering IOLs are implanted increasingly often in cataract surgery. Several studies examined the effect of blue-light-filters on contrast and colour vision. However, the study outcomes were varying. The present study investigated the effect of a blue-light-filtering IOL on colour perception and contrast acuity using highly sensitive measurement methods.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
May 2007
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
December 2005
Date type not reportedThis date has not been verified as actual or estimated.
February 2007
Actual (reported)May 2007
Actual (reported)January 29, 2008
Actual (reported)February 12, 2008
Actual (reported)contrast sensitivity
3 month after surgery
color vision
3 month after surgery
visual acuity
3 month after surgery
implantation of a yellow Hoya AF-1 (UY) YA-60BB intraocular lens
implantation of an uncoloured Hoya AF-1 (UV) VA-60BB
Department of Ophthalmology, Hietzing Hospital
Vienna, 1130, Austria
Matthias G Wirtitsch, MD
Dept of Ophthalmology, Hietzing Hospital, Vienna, Austria
24 participants (actual enrollment reported by the registry).
First Submitted
January 29, 2008
First Posted
February 12, 2008
Study Start
December 2005
Date type not reportedThis date has not been verified as actual or estimated.
Efficacy of Honan Balloon in Intraocular Pressure Reduction Before Phacoemulsification
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Primary Completion
February 2007
Actual (reported)Study Completion
May 2007
Actual (reported)Last Updated
February 12, 2008
Record last verified: 2008-01
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Source: ClinicalTrials.gov.
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