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AstigmatismNCT00584727

In-office Evaluation of Two Toric Soft Contact Lenses and a Spherical Soft Contact Lens

A study testing senofilcon A toric contact lens, alphafilcon A toric and etafilcon A sphere in people with Astigmatism, run by Johnson & Johnson Vision Care, Inc..

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 purpose of this study is to determine the relative performance of a new toric soft contact lens against a toric and a spherical contact lens currently available in market, specifically with regards to the fit and visual acuity as well as the comfort, vision and satisfaction while in the practitioner's office. 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 toric contact lens, alphafilcon A toric and etafilcon A sphere
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
96 participants
Where
No sites listed yet
Study dates
Sep 2007to Nov 2007
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

  • be at least 18 and less than or equal to 39 years of age and have a need for vision correction in BOTH eyes (monovision or uniocular fitting is NOT allowed).
  • be of Asian descent (Japanese, Chinese, Korean, Polynesian or other Asian ancestry) and have Asian Eye anatomy
  • have successfully worn toric or spherical soft (hydrogel or silicone hydrogel) contact lenses for at least 4-weeks prior to enrollment in the study.
  • be able and willing to adhere to the instructions set forth in the protocol.
  • agree to wear their contact lenses in both eyes on a daily wear schedule for at least 8 hours per day every day during the study.
  • have a distance spherical component between -1.00 D and -5.50 D with cylinder in the range of 0.75 D to 2.25 D and cylinder axis within 10 ° of the vertical and within 20 ° of the horizontal in both eyes
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  • have a best corrected manifest refraction visual acuity of at least 20/25 or better in each eye.
  • be in good general health, based on his/her knowledge.
  • read, be given an explanation of, indicate understanding of, and sign the STATEMENT OF INFORMED CONSENT.

Who cannot join

  • The subject is a rigid gas permeable (RGP) or daily disposable soft lens wearer.
  • The presence of clinically significant (grade 3 or 4) anterior segment abnormalities; inflammations such as iritis; or any infection of the eye, lids, or associated structures.
  • The presence of ocular or systemic disease or need for medication which might interfere with contact lens wear or which would cause the lenses to be removed more than twice a day. (i.e., Sjögren's syndrome, type II diabetes, etc).
  • Slit lamp findings that would contraindicate contact lens wear such as:
  • Pathological dry eye or associated findings
  • Pterygium or corneal scars within the visual axis
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  • Neovascularization >1mm in from the limbus
  • History of giant papillary conjunctivitis (GPC) worse than Grade 2
  • Anterior uveitis or iritis (past or present)
  • Seborrhoeic eczema, seborrhoeic conjunctivitis
  • A history of recurrent erosions, corneal infiltrates, corneal ulcer or fungal infections.
  • A known history of corneal hypoesthesia (reduced corneal sensitivity.)
  • Aphakia, keratoconus or a highly irregular cornea.
  • Current pregnancy or lactation (to the best of the subject's knowledge).
  • Active participation in another clinical study at any time during this study.

About this study

Official title: Evaluation of Fit and Visual Acuity of the Cypress Toric Lens in Two Phases: Part A: A Non-Dispensing Comparison to SofLens66® Toric and Acuvue® 2

The purpose of this study is to determine the relative performance of a new toric soft contact lens against a toric and a spherical contact lens currently available in market, specifically with regards to the fit and visual acuity as well as the comfort, vision and satisfaction while in the practitioner's office. Approximately 2 hours duration.

Read the detailed description

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

Conditions
Astigmatism
Being tested
senofilcon A toric contact lens, alphafilcon A toric, etafilcon A sphere
Keywords
astigmatism, visual acuity, fit, comfort, satisfaction, contact lens
Medical subject headings
Astigmatism, Personal Satisfaction

What participants receive

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

  • senofilcon A toric contact lensDevice

    contact lens

  • alphafilcon A toricDevice

    contact lens

  • etafilcon A sphereDevice

    contact lens

Study groups in NCT00584727
Study groupRoleWhat they receive
senofilcon A/alphafilcon A/etafilcon AActive comparatorFirst intervention:senofilcon A toric contact lenses Second intervention: alphafilcon A toric contact lenses Third intervention: etafilcon A sphere contact lenses
Receives: Device: senofilcon A toric contact lens; Device: alphafilcon A toric; Device: etafilcon A sphere
alphafilcon A/etafilcon A/senofilcon AActive comparatorFirst intervention: alphafilcon A toric contact lenses Second intervention: etafilcon A sphere contact lenses Third intervention: senofilcon A toric contact lenses
Receives: Device: senofilcon A toric contact lens; Device: alphafilcon A toric; Device: etafilcon A sphere
etafilcon A/senofilcon A/alphafilcon AActive comparatorFirst intervention: etafilcon A sphere contact lenses Second intervention:senofilcon A toric contact lenses Third intervention: alphafilcon A toric contact lenses
Receives: Device: senofilcon A toric contact lens; Device: alphafilcon A toric; Device: etafilcon A sphere
senofilcon A/etafilcon A/alphafilcon AActive comparatorFirst intervention: senofilcon A toric contact lenses Second intervention: etafilcon A sphere contact lenses Third intervention: alphafilcon A toric contact lenses
Receives: Device: senofilcon A toric contact lens; Device: alphafilcon A toric; Device: etafilcon A sphere
alphafilcon A/senofilcon A/etafilcon AActive comparatorFirst intervention: alphafilcon A toric contact lenses Second intervention: senofilcon A toric contact lenses Third intervention: etafilcon A sphere contact lenses
Receives: Device: senofilcon A toric contact lens; Device: alphafilcon A toric; Device: etafilcon A sphere
etafilcon A/alphafilcon A/senofilcon AActive comparatorFirst intervention: etafilcon A sphere contact lenses Second intervention: alphafilcon A toric contact lenses Third intervention: senofilcon A toric contact lenses
Receives: Device: senofilcon A toric contact lens; Device: alphafilcon A toric; Device: etafilcon A sphere

What is being measured

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

  1. Visual Acuity

    Number of eyes with Distance Visual Acuity 20/20 or better

    Measured: 15-20 minutes

  2. Patient Reported Vision

    A weighted combined score calculated from individual confort-vision related questions asked on a 1-5 scale, 1=most negative resonse to 5=most positive response, was used to derive vision scores. The analysis shows the difference in outcome between test and control. >0=greater vision, <0=lesser vision.

    Measured: 15-20 minutes

  3. Lens Orientation Within 5 Degrees

    Meaures in what position does the lens sit on the eye at insertion and is measured in degrees of rotation.

    Measured: 1 minute

  4. Lens Stability Within 5 Degrees

    Measures if the lens changes position on the eye as it is worn and is measured in degrees of rotation.

    Measured: 1 minute

  5. Patient Reported Comfort.

    A weighted combined score calculated from individual comfort-related questions asked on a 1-5 scale, 1=most negative response to 5=most positive response, was used to derive comfort outcomes. The analysis shows the difference in outcome between the test and control. >0=comfortable, <0=uncomfortable

    Measured: 15-20 minutes

  6. Patient Preference

    This outcome measures which lens the subjects preferred to wear.

    Measured: end of study

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 startSep 2007
  3. Primary completionNov 2007
  4. Study completionNov 2007

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
96 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00584727
Sponsor's protocol ID
CR-0714A
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 toric contact lens, alphafilcon A toric and etafilcon A sphere in people with Astigmatism, run by Johnson & Johnson Vision Care, Inc..

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 9 inclusion and 15 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.

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 10 Feb 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?

Visual Acuity (time frame: 15-20 minutes). The study lists 6 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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