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AstigmatismNCT03418064

Performance of Toric Silicone Hydrogel Contact Lenses Following One Month of Daily Wear

A study testing Fanfilcon A toric lens and Lotrafilcon B toric lens in people with Astigmatism, run by CooperVision, Inc. at 1 site in Mexico.

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 aim of this prospective study is to evaluate the clinical performance of fanfilcon A toric and lotrafilcon B toric contact lenses after 1 month of wear in each pair. Read more about this study

Who is it for?
Ages 18 to 40 years
Conditions the study is for
Astigmatism
What is being tested?
Fanfilcon A toric lens and Lotrafilcon B toric lens
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
42 participants
Where
1 siteMexico
Study dates
10 Feb 2018to 16 May 2018
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 40 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • Is between 18 and 40 years of age (inclusive)
  • Has had a self-reported visual exam in the last two years
  • Is an adapted soft contact lens wearer
  • Has a contact lens spherical prescription between +6.00 to - 9.00 (inclusive)
  • Have no less than -0.75D of astigmatism and no more than -2.25 D in both eyes.
  • Can achieve best corrected spectacle distance visual acuity of 20/25 (0.10 logMAR) or better in each eye.
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  • Can achieve a distance visual acuity of 20/30 (0.18 logMAR) or better in each eye with the study contact lenses.
  • Has clear corneas and no active ocular disease
  • Has read, understood and signed the information consent letter.
  • Patient contact lens refraction should fit within the available parameters of the study lenses.
  • Is willing to comply with the wear schedule (at least 5 days per week, > 8 hours/day assuming there are no contraindications for doing so).
  • Is willing to comply with the visit schedule

Who cannot join

  • A person will be excluded from the study if he/she:
  • Has a CL prescription outside the range of the available parameters of the study lenses.
  • Has a spectacle cylinder less than -0.75D or more than -2.50 D of cylinder in either eye.
  • Has a history of not achieving comfortable CL wear (5 days per week; > 8 hours/day)
  • Has contact lens best corrected distance vision worse than 20/25 (0.10 logMAR) in either eye.
  • Presence of clinically significant (grade 2-4) anterior segment abnormalities
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  • Presence of ocular or systemic disease or need of medications which might interfere with contact lens wear.
  • Slit lamp findings that would contraindicate contact lens wear such as:
  • Pathological dry eye or associated findings
  • Pterygium, pinguecula, or corneal scars within the visual axis
  • Neovascularization > 0.75 mm in from of the limbus
  • Giant papillary conjunctivitis (GCP) worse than grade 1
  • Anterior uveitis or iritis (past or present)
  • Seborrheic eczema, Seborrheic conjunctivitis
  • History of corneal ulcers or fungal infections
  • Poor personal hygiene
  • Has a known history of corneal hypoesthesia (reduced corneal sensitivity)
  • Has aphakia, keratoconus or a highly irregular cornea.
  • Has Presbyopia or has dependence on spectacles for near work over the contact lenses.
  • Has undergone corneal refractive surgery.
  • Is participating in any other type of eye related clinical or research study.

Trial locations and contacts

1 site in 1 country.

Mexico1 site
  • Optometry Clinic, National Autonomous University

    Mexico City

Other trials in Mexico

About this study

The aim of this prospective study is to evaluate the clinical performance of fanfilcon A toric and lotrafilcon B toric contact lenses after 1 month of wear in each pair.

Read the detailed description

The aim of this prospective study is to evaluate the clinical performance of Avaira Vitality toric (fanfilcon A) and AIR OPTIX for Astigmatism (lotrafilcon B) contact lenses after 1 month of wear in each pair.

Conditions
Astigmatism
Being tested
Fanfilcon A toric lens, Lotrafilcon B toric lens
Medical subject headings
Astigmatism

What participants receive

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

  • Fanfilcon A toric lensDevice

    Also called Avaira Vitality toric lens

    Contact lens

  • Lotrafilcon B toric lensDevice

    Also called AIR OPTIX for Astigmatism

    Contact lens

Study groups in NCT03418064
Study groupRoleWhat they receive
fanfilcon A toricExperimentalSubjects who wore fanfilcon A toric contact lens, either as the first or second lens in this cross-over study.
Receives: Device: Fanfilcon A toric lens
lotrafilcon BActive comparatorSubjects who wore lotrafilcon B toric contact lens, either as the first or second lens in this cross-over study.
Receives: Device: Lotrafilcon B toric lens

What is being measured

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

  1. Lens Centration

    Centration of lens on eye in primary gaze (1-3 scale; 1=optimal centration, 2=Decentration acceptable, slightly, 3 = decentration unacceptable)

    Measured: Baseline

  2. Lens Centration

    Centration of lens on eye in primary gaze (1-3 scale; 1=optimal centration, 2=Decentration acceptable, slightly, 3 = decentration unacceptable)

    Measured: Dispense

  3. Lens Centration

    Centration of lens on eye in primary gaze (1-3 scale; 1=optimal centration, 2=Decentration acceptable, slightly, 3 = decentration unacceptable)

    Measured: 1 Month

  4. Corneal Coverage

    Evaluate corneal coverage of contact lens (Yes=Full, No=Incomplete)

    Measured: Baseline

  5. Corneal Coverage

    Evaluate corneal coverage of contact lens (Yes=Full, No=Incomplete)

    Measured: Dispense

  6. Corneal Coverage

    Evaluate corneal coverage of contact lens (Yes=Full, No=Incomplete)

    Measured: 1 Month

  7. Post-blink Movement

    Amount of lens movement after blink (0-4 scale, 0=insufficient, unacceptable movement, 2=optimal movement, 3=moderate, but acceptable movement 4=excessive, unacceptable movement)

    Measured: Baseline

  8. Post-blink Movement

    Amount of lens movement after blink (0-4 scale, 0=insufficient, unacceptable movement, 2=optimal movement, 3=moderate, but acceptable movement 4=excessive, unacceptable movement)

    Measured: Dispense

  9. Post-blink Movement

    Amount of lens movement after blink (0-4 scale, 0=insufficient, unacceptable movement, 2=optimal movement, 3=moderate, but acceptable movement 4=excessive, unacceptable movement)

    Measured: 1 Month

  10. Overall Fit Acceptance

    Assessed by investigator based on lens fit alone (0-4 scale; 0=should not be worn, 4=perfect)

    Measured: Dispense

  11. Overall Fit Acceptance

    Assessed by investigator based on lens fit alone (0-4 scale; 0=should not be worn, 4=perfect)

    Measured: 1 Month

Secondary outcomes (4)
  1. Average Hours of Wear Per Day

    Number of hours lenses are worn per day

    Measured: Baseline

  2. Average Hours of Wear Per Day

    Number of hours lenses are worn per day

    Measured: 1 month

  3. Average Comfortable Wearing Time

    Typical time of day when subject first experiences lens awareness or irritation.

    Measured: Baseline

  4. Average Comfortable Wearing Time

    Typical time of day when subject first experiences lens awareness or irritation

    Measured: 1 Month

Timeline

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

  1. First posted1 Feb 2018
  2. Study start10 Feb 2018
  3. Primary completion16 May 2018
  4. Study completion16 May 2018

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
Double blind
Who is masked
Participant, Investigator
Enrolment
42 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03418064
Sponsor's protocol ID
EX-MKTG-90
Status last verified
Oct 2019
First submitted
25 Jan 2018
Last updated
13 Nov 2019
FDA-regulated drug
No
FDA-regulated device
Yes

Questions about this trial

What is this clinical trial studying?

A study testing Fanfilcon A toric lens and Lotrafilcon B toric lens in people with Astigmatism, run by CooperVision, Inc. at 1 site in Mexico.

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 12 inclusion and 21 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 13 Nov 2019. 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 Mexico. 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 13 Nov 2019). 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?

Lens Centration (time frame: Baseline). The study lists 11 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 13 Nov 2019.

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