CataractPhase 4YeWhiNCT00612781
Yellow Versus White Study
A Phase 4 study testing cataract surgery (Hoya AF-1 [UY] YA-60BB) and cataract surgery (Hoya AF-1 [UV] VA-60BB lens) in people with Cataract, run by Hospital Hietzing at 1 site in Austria.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 55 to 80 years
- Conditions the study is for
- Cataract
- What is being tested?
- cataract surgery (Hoya AF-1 [UY] YA-60BB) and cataract surgery (Hoya AF-1 [UV] VA-60BB lens)
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 24 participants
- Where
- 1 siteAustria
- Study dates
- Dec 2005to May 2007
- Phase
- Phase 4
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 55 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- bilateral age-related cataract
- age 55 to 80 years
- expected postoperative visual acuity of at least 1.0
Who cannot join
- amblyopia
- corneal scars
- diabetes
- arterial hypertonia
- pseudoexfoliation-syndrome
- earlier ocular surgeries or laser treatments
Show all 9Show fewer
- intraocular tumors
- color abnormalities
- expected postoperative visual acuity lower 1.0
Trial locations and contacts
1 site in 1 country.
About this study
Official title: 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.
- Conditions
- Cataract
- Being tested
- cataract surgery (Hoya AF-1 [UY] YA-60BB), cataract surgery (Hoya AF-1 [UV] VA-60BB lens)
- Keywords
- intraocular lens, blue-light filtering intraocular lens, contrast acuity, color vision
- Medical subject headings
- Cataract
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
cataract surgery (Hoya AF-1 [UY] YA-60BB)Procedure or surgery
Also called Hoya AF-1 (UY) YA-60BB
implantation of a yellow Hoya AF-1 (UY) YA-60BB intraocular lens
cataract surgery (Hoya AF-1 [UV] VA-60BB lens)Procedure or surgery
Also called Hoya AF-1 (UV) VA-60BB
implantation of an uncoloured Hoya AF-1 (UV) VA-60BB
| Study group | Role | What they receive |
|---|---|---|
| A | Other | Not described Receives: Procedure: cataract surgery (Hoya AF-1 [UY] YA-60BB) |
| B | Other | Not described Receives: Procedure: cataract surgery (Hoya AF-1 [UV] VA-60BB lens) |
What is being measured
The primary outcome is the main question the study is designed to answer.
contrast sensitivity
Measured: 3 month after surgery
color vision
Measured: 3 month after surgery
Secondary outcomes (1)
visual acuity
Measured: 3 month after surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Feb 2008 (estimated)
- Study startDec 2005
- Primary completionFeb 2007
- Study completionMay 2007
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for CataractStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 24 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hospital Hietzing
- Sponsor type
- University, hospital or other
- Investigators
- Matthias G Wirtitsch, MD, Principal investigator, Dept of Ophthalmology, Hietzing Hospital, Vienna, Austria
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00612781
- Sponsor's protocol ID
- Ye-Whi 2006
- Acronym
- YeWhi
- Status last verified
- Jan 2008
- First submitted
- 29 Jan 2008
- Last updated
- 12 Feb 2008
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 12 Feb 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Influence of Blue-Light-Filter IOLs on Color Perception and Contrast Acuity. A Randomized, Double-Masked Study With Intraindividual Comparison.
- ClinicalTrials.gov ID
- NCT00612781
- Acronym / sponsor ID
- YeWhi / Ye-Whi 2006
- Conditions
- Cataract
- Keywords
- intraocular lens, blue-light filtering intraocular lens, contrast acuity, color vision
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 24 participants (actual)
- Lead sponsor
- Hospital HietzingUniversity, hospital or other
- Study start
- Dec 2005
- Primary completion
- Feb 2007 (actual)
- Study completion
- May 2007 (actual)
- First posted
- 12 Feb 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| A | Other | Procedure: cataract surgery (Hoya AF-1 [UY] YA-60BB) |
| B | Other | Procedure: cataract surgery (Hoya AF-1 [UV] VA-60BB lens) |
Who may qualify
- Ages
- 55 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- bilateral age-related cataract
- age 55 to 80 years
- expected postoperative visual acuity of at least 1.0
Key exclusion criteria (9 listed)
- amblyopia
- corneal scars
- diabetes
- arterial hypertonia
- pseudoexfoliation-syndrome
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| cataract surgery (Hoya AF-1 [UY] YA-60BB)Also: Hoya AF-1 (UY) YA-60BBimplantation of a yellow Hoya AF-1 (UY) YA-60BB intraocular lens | Procedure or surgery | A |
| cataract surgery (Hoya AF-1 [UV] VA-60BB lens)Also: Hoya AF-1 (UV) VA-60BBimplantation of an uncoloured Hoya AF-1 (UV) VA-60BB | Procedure or surgery | B |
Primary outcome
contrast sensitivity
Time frame: 3 month after surgery
color vision
Time frame: 3 month after surgery
1 secondary outcome
visual acuity
Time frame: 3 month after surgery
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Feb 2008.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Matthias G Wirtitsch, MD principal investigator
Dept of Ophthalmology, Hietzing Hospital, Vienna, Austria
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing cataract surgery (Hoya AF-1 [UY] YA-60BB) and cataract surgery (Hoya AF-1 [UV] VA-60BB lens) in people with Cataract, run by Hospital Hietzing at 1 site in Austria.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 12 Feb 2008. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Austria. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
contrast sensitivity (time frame: 3 month after surgery). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Feb 2008.