CataractPhase 4NCT00710905
Visual Function With Contralateral AcrySof® ReSTOR® Aspheric SN6AD1 and SN6AD3
A Phase 4 study testing AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3 in people with Cataract, run by Alcon Research at 2 sites in Canada.
Trial summary
The objective of this study is to prospectively evaluate the visual parameters in a series of patients after phacoemulsification cataract surgery in a series of patients bilaterally implanted with the AcrySof® ReSTOR® Aspheric Intraocular Lens (IOL) Models SN6AD1 And SN6AD3. Read more about this study
- Who is it for?
- Ages 21 years and older
- Conditions the study is for
- Cataract
- What is being tested?
- AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 50 participants
- Where
- 2 sitesCanada
- Study dates
- Oct 2009to Sep 2010
- Phase
- Phase 4
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 21 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Prospective subjects should be 21 years of age and older, be of any race and gender and meet study entry criteria. Subject must require extraction of cataracts followed by implantation of a posterior chamber intraocular lens (IOL). Subjects must be candidates for bilateral removal of the natural crystalline lens followed by implantation of a multifocal IOL and be willing and able to complete all follow-up visits.
Who cannot join
- Subjects with pre-existing conditions that could skew the results or are contraindications for the AcrySof® ReSTOR® IOL should be excluded from the study. Please consult the AcrySof® ReSTOR® Aspheric product inserts under "Precautions" for subject groups that should be excluded from this study.
- All subjects must have ≤ 0.75 diopters of astigmatism preoperatively as measured by Keratometry (K) readings. If the surgeon determines that a correction of cylinder is necessary postoperatively, this may be performed after the three month evaluations are completed.
Trial locations and contacts
2 sites in 1 country.
Canada2 sites
Dr John Blaylock
Abbotsford British Columbia, British Columbia, V2S 5A1
Dr Dominique Meyer
Québec, Quebec, G1S 1X6
About this study
The objective of this study is to prospectively evaluate the visual parameters in a series of patients after phacoemulsification cataract surgery in a series of patients bilaterally implanted with the AcrySof® ReSTOR® Aspheric Intraocular Lens (IOL) Models SN6AD1 And SN6AD3.
- Conditions
- Cataract
- Being tested
- AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3
- Keywords
- Cataract IOL ReSTOR Aspheric, Bilateral cataract
- Medical subject headings
- Cataract
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3Device
Contralateral implantation of AcrySof ReSTOR +3 Intraocular Lens (IOL) in one eye, AcrySof ReSTOR +4 IOL in the other eye following cataract removal.
| Study group | Role | What they receive |
|---|---|---|
| ReSTOR | Experimental | Contralateral implantation of AcrySof ReSTOR +3 Intraocular Lens (IOL) in one eye, Acrysof ReSTOR +4 IOL in the other eye. Receives: Device: AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Binocular Visual Acuity at Near, Intermediate and Distance
Binocular uncorrected and best corrected visual acuity (VA) was tested at 4 meters (m) (distance), 60 centimeters (cm) (intermediate), and near at preferred distance (distance chosen by each subject and recorded in cm; mean and standard deviation calculated) with a standard ETDRS chart for distance and a hand held chart for near. Scores were calculated using logMAR values. LogMAR is the "logarithm of the minimum angle of resolution". A lower logMAR value indicates better VA.
Measured: 6 months after surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Jul 2008 (estimated)
- Study startOct 2009
- Primary completionSep 2010
- Study completionSep 2010
Why it stopped: Postmarket study terminated as the SN6AD3 is no longer promoted.
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- 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
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 50 participants (actual)
Sponsor and investigators
- Lead sponsor
- Alcon Research
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- John Blaylock, Principal investigator
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00710905
- Sponsor's protocol ID
- ALCONsur002.08
- Status last verified
- Nov 2011
- First submitted
- 3 Jul 2008
- Last updated
- 24 Nov 2011
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 24 Nov 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Visual Function With Contralateral AcrySof® ReSTOR® Aspheric SN6AD1 and SN6AD3
- ClinicalTrials.gov ID
- NCT00710905
- Acronym / sponsor ID
- ALCONsur002.08
- Conditions
- Cataract
- Keywords
- Cataract IOL ReSTOR Aspheric, Bilateral cataract
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Postmarket study terminated as the SN6AD3 is no longer promoted.
- Enrolment
- 50 participants (actual)
- Lead sponsor
- Alcon ResearchIndustry (pharma, biotech, devices)
- Study start
- Oct 2009
- Primary completion
- Sep 2010 (actual)
- Study completion
- Sep 2010 (actual)
- First posted
- 8 Jul 2008 (estimated)
- Results
- Posted 8 Nov 2011
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The objective of this study is to prospectively evaluate the visual parameters in a series of patients after phacoemulsification cataract surgery in a series of patients bilaterally implanted with the AcrySof® ReSTOR® Aspheric Intraocular Lens (IOL) Models SN6AD1 And SN6AD3.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| ReSTOR | Experimental | Device: AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3Contralateral implantation of AcrySof ReSTOR +3 Intraocular Lens (IOL) in one eye, Acrysof ReSTOR +4 IOL in the other eye. |
Who may qualify
- Ages
- 21 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Prospective subjects should be 21 years of age and older, be of any race and gender and meet study entry criteria. Subject must require extraction of cataracts followed by implantation of a posterior chamber intraocular lens (IOL). Subjects must be candidates for bilateral removal of the natural crystalline lens followed by implantation of a multifocal IOL and be willing and able to complete all follow-up visits.
Key exclusion criteria (2 listed)
- Subjects with pre-existing conditions that could skew the results or are contraindications for the AcrySof® ReSTOR® IOL should be excluded from the study. Please consult the AcrySof® ReSTOR® Aspheric product inserts under "Precautions" for subject groups that should be excluded from this study.
- All subjects must have ≤ 0.75 diopters of astigmatism preoperatively as measured by Keratometry (K) readings. If the surgeon determines that a correction of cylinder is necessary postoperatively, this may be performed after the three month evaluations are completed.
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 |
|---|---|---|
| AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3Contralateral implantation of AcrySof ReSTOR +3 Intraocular Lens (IOL) in one eye, AcrySof ReSTOR +4 IOL in the other eye following cataract removal. | Device | ReSTOR |
Primary outcome
Binocular Visual Acuity at Near, Intermediate and Distance
Time frame: 6 months after surgery
Binocular uncorrected and best corrected visual acuity (VA) was tested at 4 meters (m) (distance), 60 centimeters (cm) (intermediate), and near at preferred distance (distance chosen by each subject and recorded in cm; mean and standard deviation calculated) with a standard ETDRS chart for distance and a hand held chart for near. Scores were calculated using logMAR values. LogMAR is the "logarithm of the minimum angle of resolution". A lower logMAR value indicates better VA.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Nov 2011.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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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.
John Blaylock principal investigator
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing AcrySof ReSTOR Aspheric IOL models SN6AD1 and SN6AD3 in people with Cataract, run by Alcon Research at 2 sites in Canada.
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 2 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: stopped early, as of the sponsor's last update on 24 Nov 2011. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Canada. 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?
Yes. Results are posted in the registry (first posted 8 Nov 2011). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Binocular Visual Acuity at Near, Intermediate and Distance (time frame: 6 months after surgery). 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 24 Nov 2011.