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AstigmatismNCT00584831

Effect of Eye Movement on Toric Lens Orientation and Visual Acuity

A study testing senofilcon A, balafilcon A and omafilcon A in people with Astigmatism, run by Johnson & Johnson Vision Care, Inc. at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The relative performance of a new toric soft contact lens against toric contact lenses currently available in market, specifically for visual acuity and lens orientation. The study will be conducted in a staged approach (2 stages). Read more about this study

Who is it for?
Ages 18 to 39 years
Conditions the study is for
Astigmatism
What is being tested?
senofilcon A, balafilcon A and omafilcon A
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
40 participants
Where
1 siteUnited Kingdom
Study dates
Oct 2007to Feb 2008
Phase
Interventional
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 18 to 39 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • They are aged between 18-39 years.
  • They understand their rights as a research subject and are willing to sign a Statement of Informed Consent.
  • They are willing and able to follow the protocol.
  • They can attain at least 6/9 in each eye with their spectacle refraction.
  • They have successfully worn contact lenses within six months of starting the study.
  • They can be fitted with toric soft contact lenses to match the available power range.

Who cannot join

  • They have an ocular disorder which would normally contra-indicate contact lens wear.
  • They have a systemic disorder which would normally contra-indicate contact lens wear.
  • They are using any topical medication such as eye drops or ointment.
  • They are aphakic.
  • They have had corneal refractive surgery.
  • They have any corneal distortion resulting from previous hard or rigid lens wear or have keratoconus.
Show all 9Show fewer
  • They are pregnant or lactating.
  • They have grade 2 or greater of any of the following ocular surface signs: corneal oedema, corneal vascularisation, corneal staining, tarsal conjunctival changes or any other abnormality which would normally contraindicate contact lens wear.
  • They have taken part in any other clinical trial or research, within two weeks prior to starting this study.

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Eurolens Research, The University of Manchester Dpt. of Optometry & Neuroscience

    Manchester, M60 1QD

Other trials in United Kingdom

About this study

Official title: Development and Implementation of a Clinical Test to Investigate the Change in Vision With Soft Toric Contact Lenses During Eye Movements

The relative performance of a new toric soft contact lens against toric contact lenses currently available in market, specifically for visual acuity and lens orientation. The study will be conducted in a staged approach (2 stages).

Read the detailed description

Non-dispensing, single-masked (subject-masked), randomised, controlled study. Two visits.

Conditions
Astigmatism
Being tested
senofilcon A, balafilcon A, omafilcon A, lotrafilcon B
Keywords
astigmatism, visual acuity, orientation, contact lenses
Medical subject headings
Astigmatism, Orientation, Spatial

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • senofilcon ADevice

    toric contact lens

  • balafilcon ADevice

    toric contact lens

  • omafilcon ADevice

    toric contact lens

  • lotrafilcon BDevice

    toric contact lens

Study groups in NCT00584831
Study groupRoleWhat they receive
Group 2 LSBOActive comparatorcontact lenses worn in this order: lotrafilcon B toric, senofilcon A toric, balafilcon A toric, omafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 3 LOSBActive comparatorcontact lenses worn in this order: lotrafilcon B toric, omafilcon A toric, senofilcon A toric, balafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 4 LBSOActive comparatorcontact lenses worn in this order: lotrafilcon B toric, balafilcon A toric, senofilcon A toric, omafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 5 LBOSActive comparatorcontact lenses worn in this order: lotrafilcon B toric, balafilcon A toric, omafilcon A toric, senofilcon A
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 6 SLOBActive comparatorcontact lenses worn in this order: senofilcon A toric, lotrafilcon B toric, omafilcon A toric, balafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 7 SLBOActive comparatorcontact lenses worn in this order: senofilcon A toric, lotrafilcon B toric, balafilcon A toric, omafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 8 SOLBActive comparatorcontact lenses worn in this order: senofilcon A toric, omafilcon A toric, lotrafilcon B toric, balafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 9 SBLOActive comparatorcontact lenses worn in this order: senofilcon A toric, balafilcon A toric, lotrafilcon B toric, omafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 10 SBOLActive comparatorcontact lenses worn in this order: senofilcon A toric, balafilcon A toric, omafilcon A toric, lotrafilcon B toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 11 OSLBActive comparatorcontact lenses worn in this order: omafilcon A toric, senofilcon A toric, lotrafilcon B toric, balafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 12 OSBLActive comparatorcontact lenses worn in this order: omafilcon A toric, senofilcon A toric, balafilcon A toric, lotrafilcon B toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 13 OBLSActive comparatorcontact lenses worn in this order: omafilcon A toric, balafilcon A toric, lotrafilcon B toric, senofilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 14 OBSLActive comparatorcontact lenses worn in this order: omafilcon A toric, balafilcon A toric, senofilcon A toric, lotrafilcon B toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 15 BLSOActive comparatorcontact lenses worn in this order: balafilcon A toric, lotrafilcon B toric, senofilcon A toric, omafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 16 BLOSActive comparatorcontact lenses worn in this order: balafilcon A toric, lotrafilcon B toric, omafilcon A toric, senofilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 17 BSOLActive comparatorcontact lenses worn in this order: balafilcon A toric, senofilcon A toric, omafilcon A toric, lotrafilcon B toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 18 BOLSActive comparatorcontact lenses worn in this order: balafilcon A toric, omafilcon A toric, lotrafilcon B toric, senofilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 19 BOSLActive comparatorcontact lenses worn in this order: balafilcon A toric, omafilcon A toric, senofilcon A toric, lotrafilcon B toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B
Group 1 LSOBActive comparatorcontact lenses worn in this order: lotrafilcon B toric/senofilcon A toric/omafilconA toric/balafilcon A toric
Receives: Device: senofilcon A; Device: balafilcon A; Device: omafilcon A; Device: lotrafilcon B

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Visual Acuity After Infero-temporal Version Movement.

    logarithm of the minimum angle of resolution (logMar) ideal is 0.0 and represents 20/20 Snellen acuity. logMar values > 0.00 indicate vision poorer than the ideal and values <0.00 indicate vision greater than the ideal.

    Measured: 10 minutes after insertion

  2. Visual Acuity After Infero-nasal Version Movement.

    logarithm of the minimum angle of resolution (logMar) ideal is 0.0 and represents 20/20 Snellen acuity. logMar values > 0.00 indicate vision poorer than the ideal and values <0.00 indicate vision greater than the ideal.

    Measured: 10 minutes after lens insertion

  3. Visual Acuity After Superior-temporal Version Movement

    logarithm of the minimum angle of resolution (logMar) ideal is 0.0 and represents 20/20 Snellen acuity. logMar values > 0.00 indicate vision poorer than the ideal and values <0.00 indicate vision greater than the ideal.

    Measured: 10 minutes after lens insertion

  4. Visual Acuity After Superior-nasal Version Movement.

    logarithm of the minimum angle of resolution (logMar) ideal is 0.0 and represents 20/20 Snellen acuity. logMar values > 0.00 indicate vision poorer than the ideal and values <0.00 indicate vision greater than the ideal.

    Measured: 10 minutes after lens insertion

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Jan 2008 (estimated)
  2. Study startOct 2007
  3. Primary completionFeb 2008
  4. Study completionFeb 2008

Resources

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
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Participant
Enrolment
40 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00584831
Sponsor's protocol ID
CR-0725
Other IDs
J07-416
Status last verified
May 2015
First submitted
20 Dec 2007
Last updated
21 May 2015
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A study testing senofilcon A, balafilcon A and omafilcon A in people with Astigmatism, run by Johnson & Johnson Vision Care, Inc. at 1 site in United Kingdom.

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 6 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 21 May 2015. 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 United Kingdom. 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?

Yes. Results are posted in the registry (first posted 1 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?

Visual Acuity After Infero-temporal Version Movement. (time frame: 10 minutes after insertion). The study lists 4 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 21 May 2015.

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