Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Yellow Versus White Study (YeWhi)

This study has been completed.
Information provided by:
Hospital Hietzing Identifier:
First received: January 29, 2008
Last updated: NA
Last verified: January 2008
History: No changes posted

January 29, 2008
January 29, 2008
December 2005
February 2007   (Final data collection date for primary outcome measure)
  • contrast sensitivity [ Time Frame: 3 month after surgery ]
  • color vision [ Time Frame: 3 month after surgery ]
Same as current
No Changes Posted
visual acuity [ Time Frame: 3 month after surgery ]
Same as current
Not Provided
Not Provided
Yellow Versus White Study
Influence of Blue-Light-Filter IOLs on Color Perception and Contrast Acuity. A Randomized, Double-Masked Study With Intraindividual Comparison.
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.
Not Provided
Phase 4
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
  • Procedure: cataract surgery (Hoya AF-1 [UY] YA-60BB)
    implantation of a yellow Hoya AF-1 (UY) YA-60BB intraocular lens
    Other Name: Hoya AF-1 (UY) YA-60BB
  • Procedure: cataract surgery (Hoya AF-1 [UV] VA-60BB lens)
    implantation of an uncoloured Hoya AF-1 (UV) VA-60BB
    Other Name: Hoya AF-1 (UV) VA-60BB
  • A
    Intervention: Procedure: cataract surgery (Hoya AF-1 [UY] YA-60BB)
  • B
    Intervention: Procedure: cataract surgery (Hoya AF-1 [UV] VA-60BB lens)
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
May 2007
February 2007   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • bilateral age-related cataract
  • age 55 to 80 years
  • expected postoperative visual acuity of at least 1.0

Exclusion Criteria:

  • amblyopia
  • corneal scars
  • diabetes
  • arterial hypertonia
  • pseudoexfoliation-syndrome
  • earlier ocular surgeries or laser treatments
  • intraocular tumors
  • color abnormalities
  • expected postoperative visual acuity lower 1.0
Sexes Eligible for Study: All
55 Years to 80 Years   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
Ye-Whi 2006
Not Provided
Not Provided
Not Provided
Matthias Wirtitsch MD, Dept. of Ophthalmology, Hospital Hietzing, Vienna, Austria
Hospital Hietzing
Not Provided
Principal Investigator: Matthias G Wirtitsch, MD Dept of Ophthalmology, Hietzing Hospital, Vienna, Austria
Hospital Hietzing
January 2008

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP