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AstigmatismNCT00697190

Clinical Performance of Atypical Contact Lens Powers on Subjects With Astigmatism

A study testing senofilcon A toric and galyfilcon A toric 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

This study will evaluate the fitting characteristics and physiological response of two toric lenses manufactured by Vistakon. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Astigmatism
What is being tested?
senofilcon A toric and galyfilcon A toric
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
39 participants
Where
1 siteUnited Kingdom
Study dates
May 2008to Sep 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 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Able to wear study lenses in parameters available.
  • At least 18
  • understand and sign informed consent
  • willing to follow the protocol
  • achieve at least 6/9 Visual Acuity (VA), both eyes (OU) with study lenses
  • hyperopes: +2.00 to +4.00 with -0.75 D cylinder around 180, high myopes: -6.00 to -8.00 with -1.25 D cylinder around 180
  • oblique axis: -2.00 to -4.00 with -0.75 D cyl around 45 or 135, have worn Soft Contact Lenses's within last 6 months

Who cannot join

  • Any ocular or systemic disorder which may contraindicate Contact Lens (CL) wear
  • any topical ocular medication
  • aphakic
  • corneal refractive surgery,
  • corneal distortion from hard CL wear or keratoconus
  • pregnant or lactating
Show all 10Show fewer
  • grade 2 or worse slit lamp signs
  • infectious disease
  • previous clinical study within 2 weeks
  • don't agree to participate

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Eurolens Research

    Manchester

Other trials in United Kingdom

About this study

This study will evaluate the fitting characteristics and physiological response of two toric lenses manufactured by Vistakon.

Conditions
Astigmatism
Being tested
senofilcon A toric, galyfilcon A toric
Medical subject headings
Astigmatism

What participants receive

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

  • senofilcon A toricDevice

    Also called Acuvue Oasys for Astigmatism

    silicone hydrogel contact lens for patients with astigmatism

  • galyfilcon A toricDevice

    Also called Acuvue Advance for Astigmatism

    silicone hydrogel contact lens for patients with astigmatism

Study groups in NCT00697190
Study groupRoleWhat they receive
senofilcon A/galyfilcon AActive comparatorsenofilcon A silicone hydrogel toric contact lenses will be worn first. galyfilcon A silicone hydrogel toric contact lenses will be worn second.
Receives: Device: senofilcon A toric; Device: galyfilcon A toric
galyfilcon A/senofilcon AActive comparatorgalyfilcon A silicone hydrogel toric contact lenses worn first. senofilcon A silicone hydrogel toric contact lenses worn second.
Receives: Device: senofilcon A toric; Device: galyfilcon A toric

What is being measured

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

  1. Assessment of Conjunctival Hyperemia in Subjects That Are High Myopes (Have a High Degree of Nearsightedness)

    Conjunctival hyperemia measures the redness across the white of the eye. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  2. Assessment of Conjunctival Hyperemia in Subjects That Are Hyperopes (Farsighted)

    Conjunctival hyperemia measures the redness across the white of the eye. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  3. Assessment of Conjunctival Hyperemia in Subjects That Are Oblique Astigmats (Have an Abnormally Curved Cornea)

    Conjunctival hyperemia measures the redness across the white of the eye. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  4. Assessment of Limbal Hyperemia in Subjects That Are High Myopes (Have a High Degree of Nearsightedness)

    Limbal hyperemia measures the redness around the edge of the cornea. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  5. Assessment of Limbal Hyperemia in Subjects That Are Hyperopes (Farsighted)

    Limbal hyperemia measures the redness around the edge of the cornea. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  6. Assessment of Limbal Hyperemia in Subjects That Are Oblique Astigmats (Have an Abnormally Curved Cornea)

    Limbal hyperemia measures the redness around the edge of the cornea. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  7. Assessment of Corneal Staining in Subjects That Are High Myopes (Have a High Degree of Nearsightedness)

    Corneal staining measures changes to the surface of the cornea, as evaluated by the degree of staining with sodium fluorescein solution. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  8. Assessment of Corneal Staining in Subjects That Are Hyperopes (Farsighted)

    Corneal staining measures changes to the surface of the cornea, as evaluated by the degree of staining with sodium fluorescein solution. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  9. Assessment of Corneal Staining in Subjects That Are Oblique Astigmats (Have an Abnormally Curved Cornea)

    Corneal staining measures changes to the surface of the cornea, as evaluated by the degree of staining with sodium fluorescein solution. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  10. Assessment of Conjunctival Staining in Subjects That Are High Myopes (Have a High Degree of Nearsightedness)

    Conjunctival staining measures the changes to the conjunctival surface as evaluated by the degree of staining with sodium fluorescein solution. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  11. Assessment of Conjunctival Staining in Subjects That Are Hyperopes (Farsighted)

    Conjunctival staining measures the changes to the conjunctival surface as evaluated by the degree of staining with sodium fluorescein solution. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  12. Assessment of Conjunctival Staining in Subjects That Are Oblique Astigmats (Have an Abnormally Curved Cornea)

    Conjunctival staining measures the changes to the conjunctival surface as evaluated by the degree of staining with sodium fluorescein solution. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  13. Assessment of Papillary Conjunctivitis in Subjects That Are High Myopes (Have a High Degree of Nearsightedness)

    Papillary conjunctivitis measures the changes to the conjunctival surface on the underside of the upper eyelid. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  14. Assessment of Papillary Conjunctivitis in Subjects That Are Hyperopes (Farsighted)

    Papillary conjunctivitis measures the changes to the conjunctival surface on the underside of the upper eyelid. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

  15. Assessment of Papillary Conjunctivitis in Subjects That Are Oblique Astigmats (Have an Abnormally Curved Cornea)

    Papillary conjunctivitis measures the changes to the conjunctival surface on the underside of the upper eyelid. The investigator used a grading scale of 0=none, 1=slight, 2=moderate, 3=severe.

    Measured: after 6 hours of wear

Timeline

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

  1. First posted13 Jun 2008 (estimated)
  2. Study startMay 2008
  3. Primary completionSep 2008
  4. Study completionSep 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
39 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00697190
Sponsor's protocol ID
CR-4523
Status last verified
May 2015
First submitted
10 Jun 2008
Last updated
22 May 2015
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A study testing senofilcon A toric and galyfilcon A toric 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 7 inclusion and 10 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 22 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 Oct 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?

Assessment of Conjunctival Hyperemia in Subjects That Are High Myopes (Have a High Degree of Nearsightedness) (time frame: after 6 hours of wear). The study lists 15 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 22 May 2015.

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