AstigmatismNCT01857102
Toric Eye Strain and Stability Study
A study testing etafilcon A and etafilcon A for Astigmatism in people with Astigmatism, run by Johnson & Johnson Vision Care, Inc. at 1 site in United States.
Trial summary
The purpose of this study is to determine the benefits of fitting low astigmats with soft toric contact lenses versus spherical contact lenses with regard to visual comfort, eyestrain, fitting efficiency, and visual performance. Read more about this study
- Who is it for?
- Ages 18 to 45 yearsHealthy volunteers can take part
- Conditions the study is for
- Astigmatism
- What is being tested?
- etafilcon A and etafilcon A for Astigmatism
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 159 participants
- Where
- 1 siteUnited States
- Study dates
- Sep 2013to Jun 2014
- 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 45 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- The subject must have read, understand, and sign the statement of informed consent and receive a fully executed copy of the Informed Consent Form.
- The subject must appear able and willing to adhere to the instructions set forth in this protocol.
- The subject must be between 18 years and 45 years of age (inclusive).
- The subject must have best-corrected Snellen visual acuity of 20/30 or better in each eye.
- If the subject has ever worn contact lenses, the subject must be a current wearer of soft spherical contact lenses for at least 5 days/week and at least 8 hours/day during the month prior to enrollment.
- Subjective refraction must result in a vertex-corrected astigmatic contact lens prescription requiring at least -0.75 DC but not more than -1.75 DC cylindrical contact lens correction in each eye.
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- Subjective refraction must result in a vertex-corrected spherical contact lens prescription between +0.25D to +4.00D or between-0.50D to -9.00D in each eye.
- The subject must not have the need for presbyopic correction (i.e., they must not be using as add in spectacles or wearing multifocal or monofocal contact lenses).
- The subject must have normal eyes with no evidence of abnormality or disease that in the opinion of the investigator would contraindicate contact lens wear.
- The subject must have access to the internet throughout the day (either desktop and/or smartphone) and be willing to answer a web-based survey within 1 hour of receiving a text message based notification throughout the day for up to 8 days, throughout the study duration.
Who cannot join
- Self-reported current pregnancy or lactation or plans to become pregnant during the study period (subjects who report becoming pregnant during the study will be discontinued)
- Any previous ocular or intra-ocular surgery (e.g. radial keratotomy, PRK, LASIK, etc.)
- Any clinically meaningful slit lamp findings contraindicating contact lens wear (e.g. greater than or equal to grade 3 finding of edema, corneal neovascularization, corneal staining, conjunctival injection, blepharitis/meibomian gland dysfunction) on the FDA classification scale or any other ocular abnormality that in the opinion of the investigator may contraindicate contact lens wear.
- Any ocular infection
- Current use of topical ophthalmic medications other than artificial tears/rewetting drops.
- History of binocular vision abnormality or strabismus.
Show all 10Show fewer
- Any infectious disease (e.g. hepatitis, tuberculosis) or a contagious immunosuppressive disease (e.g. HIV) by self-report.
- Other active ocular disease that in the opinion of the investigator would contraindicate contact lens wear.
- Employee of the investigational clinic (e.g. investigator, coordinator, technician)
- Subject does not have a wearable pair of spectacles.
Trial locations and contacts
1 site in 1 country.
About this study
The purpose of this study is to determine the benefits of fitting low astigmats with soft toric contact lenses versus spherical contact lenses with regard to visual comfort, eyestrain, fitting efficiency, and visual performance.
- Conditions
- Astigmatism
- Being tested
- etafilcon A, etafilcon A for Astigmatism
- Medical subject headings
- Astigmatism
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
etafilcon ADevice
Soft contact lens to be worn in a daily wear, daily disposable modality for one week
etafilcon A for AstigmatismDevice
Soft contact lens to be worn by participants in a daily wear, daily disposable modality for one week.
| Study group | Role | What they receive |
|---|---|---|
| etafilcon A/etafilcon A for Astigmatism | Active comparator | Subjects were randomized to one of two sequences of lens wear. Receives: Device: etafilcon A; Device: etafilcon A for Astigmatism |
| etafilcon A for Astigmatism/etafilcon A | Experimental | Subjects were randomized to one of two sequences of lens wear. Receives: Device: etafilcon A; Device: etafilcon A for Astigmatism |
What is being measured
The primary outcome is the main question the study is designed to answer.
Objective Comfort Assessed by Electromyography(EMG)
Electromyography (EMG) utilizes electrodes affixed to the skin below the eyelid, which measures activity of the orbital portion of the orbicularis oculi muscle. The orbital portion of the orbicularis oculi muscle pulls on the skin of the forehead, temple and cheek and draws it toward a point at the edge of the orbit. This part of the muscle is mainly under voluntary control, and it what is contracted during the process of squinting. The palpebral portion of this muscle closes the eyelids. The EMG reading was performed while the subject was wearing contact lenses in order to objectively assess eyestrain.The higher the EMG reading indicated the more the eyestrain. The original EMG data collected from a 40-second recording consisted of approximately 40,000 observations; the machine read about 1000 observations per second consecutively during 40-second recording. The original EMG reading was converted to a single data point and entered in the EDC for the analysis purpose.
Measured: 1 week
Visual Comfort
The Visual comfort (diurnal fluctuation[DF]) scores were derived from the National Eye Institute Refractive Error Quality of Life (NEI-RQL) instruments- specifically the diurnal fluctuations sub-scale, by following the instruction given in the NEI-RQL-42 User Manual, Version 1.0. The NEI-RQL is a validated patient reported outcome questionnaire to assess the impact of refractive correction on vision specifically to quality of life. This survey consisted of 42 items used to develop 13 subscales: clarity of vision, expectations, near vision, far vision, diurnal fluctuations, activity limitations, glare, symptoms, dependence on correction, worry, suboptimal correction, appearance, and satisfaction with correction. An overall score is calculated by averaging the subscales. The overall scores can take on values of 0 to 100. Higher scores indicate better outcomes
Measured: 1-week follow-up
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 May 2013 (estimated)
- Study startSep 2013
- Primary completionJun 2014
- Study completionJun 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for AstigmatismStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- 159 participants (actual)
Sponsor and investigators
- Lead sponsor
- Johnson & Johnson Vision Care, Inc.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01857102
- Sponsor's protocol ID
- CR-5363
- Status last verified
- May 2017
- First submitted
- 8 May 2013
- Last updated
- 19 Jun 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 Jun 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Toric Eye Strain and Stability Study
- ClinicalTrials.gov ID
- NCT01857102
- Acronym / sponsor ID
- CR-5363
- Conditions
- Astigmatism
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 159 participants (actual)
- Lead sponsor
- Johnson & Johnson Vision Care, Inc.Industry (pharma, biotech, devices)
- Study start
- Sep 2013
- Primary completion
- Jun 2014 (actual)
- Study completion
- Jun 2014 (actual)
- First posted
- 20 May 2013 (estimated)
- Results
- Posted 15 May 2017
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to determine the benefits of fitting low astigmats with soft toric contact lenses versus spherical contact lenses with regard to visual comfort, eyestrain, fitting efficiency, and visual performance.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| etafilcon A/etafilcon A for Astigmatism | Active comparator | Device: etafilcon A, Device: etafilcon A for AstigmatismSubjects were randomized to one of two sequences of lens wear. |
| etafilcon A for Astigmatism/etafilcon A | Experimental | Device: etafilcon A, Device: etafilcon A for AstigmatismSubjects were randomized to one of two sequences of lens wear. |
Who may qualify
- Ages
- 18 to 45 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (10 listed)
- The subject must have read, understand, and sign the statement of informed consent and receive a fully executed copy of the Informed Consent Form.
- The subject must appear able and willing to adhere to the instructions set forth in this protocol.
- The subject must be between 18 years and 45 years of age (inclusive).
- The subject must have best-corrected Snellen visual acuity of 20/30 or better in each eye.
- If the subject has ever worn contact lenses, the subject must be a current wearer of soft spherical contact lenses for at least 5 days/week and at least 8 hours/day during the month prior to enrollment.
Key exclusion criteria (10 listed)
- Self-reported current pregnancy or lactation or plans to become pregnant during the study period (subjects who report becoming pregnant during the study will be discontinued)
- Any previous ocular or intra-ocular surgery (e.g. radial keratotomy, PRK, LASIK, etc.)
- Any clinically meaningful slit lamp findings contraindicating contact lens wear (e.g. greater than or equal to grade 3 finding of edema, corneal neovascularization, corneal staining, conjunctival injection, blepharitis/meibomian gland dysfunction) on the FDA classification scale or any other ocular abnormality that in the opinion of the investigator may contraindicate contact lens wear.
- Any ocular infection
- Current use of topical ophthalmic medications other than artificial tears/rewetting drops.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| etafilcon ASoft contact lens to be worn in a daily wear, daily disposable modality for one week | Device | etafilcon A for Astigmatism/etafilcon A, etafilcon A/etafilcon A for Astigmatism |
| etafilcon A for AstigmatismSoft contact lens to be worn by participants in a daily wear, daily disposable modality for one week. | Device | etafilcon A for Astigmatism/etafilcon A, etafilcon A/etafilcon A for Astigmatism |
Primary outcome
Objective Comfort Assessed by Electromyography(EMG)
Time frame: 1 week
Electromyography (EMG) utilizes electrodes affixed to the skin below the eyelid, which measures activity of the orbital portion of the orbicularis oculi muscle. The orbital portion of the orbicularis oculi muscle pulls on the skin of the forehead, temple and cheek and draws it toward a point at the edge of the orbit. This part of the muscle is mainly under voluntary control, and it what is contracted during the process of squinting. The palpebral portion of this muscle closes the eyelids. The EMG reading was performed while the subject was wearing contact lenses in order to objectively assess eyestrain.The higher the EMG reading indicated the more the eyestrain. The original EMG data collected from a 40-second recording consisted of approximately 40,000 observations; the machine read about 1000 observations per second consecutively during 40-second recording. The original EMG reading was converted to a single data point and entered in the EDC for the analysis purpose.
Visual Comfort
Time frame: 1-week follow-up
The Visual comfort (diurnal fluctuation[DF]) scores were derived from the National Eye Institute Refractive Error Quality of Life (NEI-RQL) instruments- specifically the diurnal fluctuations sub-scale, by following the instruction given in the NEI-RQL-42 User Manual, Version 1.0. The NEI-RQL is a validated patient reported outcome questionnaire to assess the impact of refractive correction on vision specifically to quality of life. This survey consisted of 42 items used to develop 13 subscales: clarity of vision, expectations, near vision, far vision, diurnal fluctuations, activity limitations, glare, symptoms, dependence on correction, worry, suboptimal correction, appearance, and satisfaction with correction. An overall score is calculated by averaging the subscales. The overall scores can take on values of 0 to 100. Higher scores indicate better outcomes
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Jun 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing etafilcon A and etafilcon A for Astigmatism in people with Astigmatism, 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 10 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 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 15 May 2017). 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?
Objective Comfort Assessed by Electromyography(EMG) (time frame: 1 week). The study lists 2 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.