Ocular AccommodationNCT00877201
Improvement of Accommodation With Anti-Oxidant Supplementation in Visual Display Terminal Users
A study testing CDR2 in people with Ocular Accommodation, run by Ryogoku Eye Clinic at 1 site in Japan.
Trial summary
The purpose of this study is to determine the antioxidant supplementation effect on accommodation among visual display terminal (VDT) users. Read more about this study
- Who is it for?
- Ages 40 to 49 yearsHealthy volunteers can take part
- Conditions the study is for
- Ocular Accommodation
- What is being tested?
- CDR2
- How many people
- Not given
- Where
- 1 siteJapan
- Study dates
- Mar 2007to not given
- Phase
- Interventional
- 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 40 to 49 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- best corrected visual acuity is over 20/20
Who cannot join
- receiving any medication or supplement that would alter the accommodation status within a week from the commencement of this study
- using multifocal spectacles or contact lenses
- pregnant or lactating mothers
- subjects with a history of drug allergy
Trial locations and contacts
1 site in 1 country.
About this study
The purpose of this study is to determine the antioxidant supplementation effect on accommodation among visual display terminal (VDT) users.
- Conditions
- Ocular Accommodation
- Being tested
- CDR2
- Keywords
- Accommodation, visual display terminal (VDT), antioxidant
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CDR2Drug
What is being measured
The primary outcome is the main question the study is designed to answer.
accommodation changes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Apr 2009 (estimated)
- Study startMar 2007
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Ocular AccommodationStudies 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 N/A
- Primary purpose
- Supportive care
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
Sponsor and investigators
- Lead sponsor
- Ryogoku Eye Clinic
- Sponsor type
- University, hospital or other
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00877201
- Sponsor's protocol ID
- Ryogoku6886
- Status last verified
- Apr 2009
- First submitted
- 6 Apr 2009
- Last updated
- 8 Apr 2009
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Uchino Y, Uchino M, Dogru M, Fukagawa K, Tsubota K. Improvement of accommodation with anti-oxidant supplementation in visual display terminal users. J Nutr Health Aging. 2012 May;16(5):478-81. doi: 10.1007/s12603-012-0059-3.
PubMed 22555795
Study at a glance
From the registry record, last updated by the sponsor on 8 Apr 2009. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Improvement of Accommodation With Anti-Oxidant Supplementation in Visual Display Terminal Users
- ClinicalTrials.gov ID
- NCT00877201
- Acronym / sponsor ID
- Ryogoku6886
- Conditions
- Ocular Accommodation
- Keywords
- Accommodation, visual display terminal (VDT), antioxidant
- Study type
- Interventional
- Recruitment status
- Completed
- Lead sponsor
- Ryogoku Eye ClinicUniversity, hospital or other
- Study start
- Mar 2007
- First posted
- 7 Apr 2009 (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.
The purpose of this study is to determine the antioxidant supplementation effect on accommodation among visual display terminal (VDT) users.
Study design
- Primary purpose
- Supportive care
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
Who may qualify
- Ages
- 40 to 49 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- best corrected visual acuity is over 20/20
Key exclusion criteria (4 listed)
- receiving any medication or supplement that would alter the accommodation status within a week from the commencement of this study
- using multifocal spectacles or contact lenses
- pregnant or lactating mothers
- subjects with a history of drug allergy
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 |
|---|---|---|
| CDR2 | Drug | – |
Primary outcome
accommodation changes
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 8 Apr 2009.
- Derived from this study: PubMed 22555795Uchino Y, Uchino M, Dogru M, Fukagawa K, Tsubota K. Improvement of accommodation with anti-oxidant supplementation in visual display terminal users. J Nutr Health Aging. 2012 May;16(5):478-81. doi: 10.1007/s12603-012-0059-3.
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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing CDR2 in people with Ocular Accommodation, run by Ryogoku Eye Clinic at 1 site in Japan.
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 1 inclusion and 4 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 8 Apr 2009. 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 Japan. 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.
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?
accommodation changes. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00877201, which also lists 1 linked publication.
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 8 Apr 2009; AzTrials last refreshed its copy on 7 Nov 2026.