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PresbyopiaNCT00808340

Comparison of Three Soft Bifocal Contact Lenses

A study testing balafilcon A, senofilcon A production and senofilcon A test in people with Presbyopia, run by Johnson & Johnson Vision Care, Inc. at 1 site in United States.

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 primary purpose of the study is to compare the performance of three soft bifocal contact lenses in terms of the vision provided by the lenses. Read more about this study

Who is it for?
Ages 35 to 70 years
Conditions the study is for
Presbyopia
What is being tested?
balafilcon A, senofilcon A production and senofilcon A test
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
37 participants
Where
1 siteUnited States
Study dates
1 Nov 2008to 1 Dec 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 35 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • The subject must between 35 and 70 years of age.
  • The subject must respond positively to at least one symptom on the "Presbyopic Symptoms Questionnaire" or be already wearing presbyopic contact lens correction ( e.g. reading spectacles over contact lenses, multifocal or monovision contact lenses etc.).
  • The subject's spherical equivalent distance refraction must be in the range of -1.00 to -6.00 in each eye.
  • Refractive cylinder must be less than or equal to -0.75 D in each eye.
  • The subject must have an add power of +0.75D to +2.50D in each eye.
  • The subject must have best corrected visual acuity of 20/20-3 or better in each eye.
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  • The subject's must have at least 20/30-distance vision with the study contact lenses.
  • The subject must agree that they are comfortable with their vision prior to being dispensed the study lenses.
  • The subject must be an adapted soft contact lens wearer in both eyes.
  • The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
  • The subject must read and sign the STATEMENT OF INFORMED CONSENT and be provided a copy of the form.

Who cannot join

  • Ocular or systemic allergies or disease that may interfere with contact lens wear.
  • Systemic disease, autoimmune disease or use of medication, which may interfere with contact lens wear.
  • Clinically significant (grade 3 or 4) corneal edema, corneal vascularization, corneal staining or any other abnormality of the cornea, which may contraindicate contact lens wear.
  • Clinically significant (grade 3 or 4) tarsal abnormalities that might interfere with contact lens wear.
  • Any ocular infection.
  • Any corneal distortion resulting from previous hard or rigid gas permeable contact lens wear.
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  • Pregnancy or lactation
  • Any infectious disease (e.g., hepatitis, tuberculosis) or a contagious immunosuppressive disease (e.g., HIV).
  • History of diabetes. History of binocular vision abnormality or strabismus.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Study site

    Roanoke, Virginia, 24153

Other trials in United States

About this study

The primary purpose of the study is to compare the performance of three soft bifocal contact lenses in terms of the vision provided by the lenses.

Conditions
Presbyopia
Being tested
balafilcon A, senofilcon A production, senofilcon A test
Medical subject headings
Presbyopia

What participants receive

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

  • balafilcon ADevice

    multifocal contact lens

  • senofilcon A productionDevice

    multifocal contact lens

  • senofilcon A testDevice

    multifocal contact lens

Study groups in NCT00808340
Study groupRoleWhat they receive
senofilA test/senofilA prod/balafilconAActive comparatorSubjects wear 3 multifocal contact lenses: senofilcon A test worn first, senofilcon A production worn second, and balafilcon A worn third.
Receives: Device: balafilcon A; Device: senofilcon A production; Device: senofilcon A test
senofilcon A test/balafilcon A/senofilcon A prodActive comparatorSubjects wear 3 multifocal contact lenses: senofilcon A test worn first, balafilcon A worn second, and senofilcon A production worn third.
Receives: Device: balafilcon A; Device: senofilcon A production; Device: senofilcon A test
senofilcon A prod/senofilcon A test/balafilcon AActive comparatorSubjects wear 3 multifocal contact lenses: senofilcon A production worn first, senofilcon A test worn second, and balafilcon A worn third.
Receives: Device: balafilcon A; Device: senofilcon A production; Device: senofilcon A test
senofilcon A prod/ balifilcon A/ senofilcon A testActive comparatorSubjects wear 3 multifocal contact lenses: senofilcon A production worn first, balafilcon A worn second, and senofilcon A test worn third.
Receives: Device: balafilcon A; Device: senofilcon A production; Device: senofilcon A test
balafilcon A/senofilcon A test/senofilcon A prodActive comparatorSubjects wear 3 multifocal contact lenses: balafilcon A worn first, senofilcon A test worn second, and senofilcon A production worn third.
Receives: Device: balafilcon A; Device: senofilcon A production; Device: senofilcon A test
balafilcon A/senofilcon A prod/senofilcon A testActive comparatorSubjects wear 3 multifocal contact lenses: balafilcon A worn first, senofilcon A production worn second, senofilcon A test worn third.
Receives: Device: balafilcon A; Device: senofilcon A production; Device: senofilcon A test

What is being measured

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

  1. Distance Bright Illumination Binocular Visual Performance Reported as Visual Acuity

    Tested with both eyes together in bright lighting, reading charts distant to the subject. This outcome is measured in logMAR units.LogMAR stands for the logarithm of the minimum angle of resolution. 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: 5 minutes after insertion

  2. Near Bright Illumination Binocular Visual Performance Reported as Visual Acuity

    Tested with both eyes together in bright lighting reading charts near to the subject. This outcome is measured in logMAR units.LogMAR stands for the logarithm of the minimum angle of resolution. 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: 5 minutes after insertion

  3. Type of Corneal Staining

    Investigator rated type of corneal staining as either 0=none, 1=micropunctate, 2=macropunctate, 3=coalesced, or 4=patch(> or = to mm).

    Measured: after 1 week of lens wear, for each lens type

  4. Overall Subjective Vision

    Subject rated the overall quality of vision with the study contact lenses. 5=excellent, 4=very good, 3=good, 2=fair, 1=poor.

    Measured: after 1 week of lens wear, for each lens type

Timeline

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

  1. First posted15 Dec 2008 (estimated)
  2. Study start1 Nov 2008
  3. Primary completion1 Dec 2008
  4. Study completion1 Dec 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
Crossover
Masking
Single blind
Who is masked
Participant
Enrolment
37 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00808340
Sponsor's protocol ID
CR-1485FA
Status last verified
Aug 2017
First submitted
12 Dec 2008
Last updated
19 Jun 2018

Questions about this trial

What is this clinical trial studying?

A study testing balafilcon A, senofilcon A production and senofilcon A test in people with Presbyopia, run by Johnson & Johnson Vision Care, Inc. at 1 site in United States.

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 11 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 19 Jun 2018. 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 States. 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 26 Aug 2010). 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?

Distance Bright Illumination Binocular Visual Performance Reported as Visual Acuity (time frame: 5 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 19 Jun 2018.

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