Comparative In-Vivo Wetting Characteristics of Silicone Hydrogel Materials With Selected Lens Care Systems
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Texas
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Fort Worth, Texas, Forenede Stater, 76134
- Contact Alcon Call Center at 1-888-451-3937 for Trial Locations
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Read and understand the Participant Information Sheet;
- Read, sign, and date the Informed Consent;
- Be a current silicone hydrogel contact lens wearer using the contact lenses under a frequent replacement (bi-weekly or monthly) daily wear modality;
- Be classified as symptomatic and a depositor at the end of the replacement period according to protocol-specified criteria;
- Agree to wear study contact lenses as directed for the duration of the study and maintain the appointment schedule;
- Best corrected visual acuity of 6/9 or better in each eye;
- Normal eyes with the exception of the need for visual correction;
- Other protocol-defined inclusion criteria may apply.
Exclusion Criteria:
- Known sensitivity or intolerance to any of the contact lenses or contact lens care products to be used;
- Monocular vision (only one eye with functional vision or only one eye fitted with contact lenses);
- Use of systemic medication which might interfere with contact lens wear or produce dry eye side effects;
- Systemic disease which might interfere with contact lens wear or produce dry eye side effects;
- Systemic or ocular allergies which might interfere with contact lens wear;
- Ocular disease which might interfere with contact lens wear;
- Active ocular infection;
- Use of any concomitant topical ocular medications during the study period;
- Previous ocular surgery;
- Pregnant, planning to become pregnant, or lactating at the time of enrollment;
- Participation in an investigational drug or device study within 30 days of entering this study;
- Other protocol-defined exclusion criteria may apply.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Enkelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: Air Optix Aqua
Lotrafilcon B contact lenses with OFPM and BIOTRUE for 30 days each
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Silicone hydrogel contact lenses, Phase 2
Andre navne:
Contact lens care system, Phase 2
Andre navne:
Contact lens care system, Phase 2
Silicone hydrogel contact lenses worn for 30 days, Phase 1
Andre navne:
Contact lens care system used for 30 days, Phase 1
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Aktiv komparator: Acuvue Oasys
Senofilcon A contact lenses with OFPM and BIOTRUE for 30 days each
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Contact lens care system, Phase 2
Andre navne:
Contact lens care system, Phase 2
Silicone hydrogel contact lenses worn for 30 days, Phase 1
Andre navne:
Contact lens care system used for 30 days, Phase 1
Silicone hydrogel contact lenses, Phase 2
Andre navne:
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Mean Ex-Vivo Total Lipid Uptake Per Lens
Tidsramme: Day 30
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The contact lens was aseptically removed from the eye.
Lipids were extracted and analyzed using a proprietary High Performance Liquid Chromatography technique.
A lower value indicates a cleaner lens surface.
One eye (study eye) contributed to the mean.
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Day 30
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Mean Non-Invasive Pre-Lens Tear Film Break Up Time (NIBUT)
Tidsramme: Day 30
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The pre-lens tear film is the layer of tears located on top of the contact lens between the eyelid and the contact lens.
NIBUT (i.e., the time elapsed between eye opening after a blink and the appearance of the first dark spot within the tear film) was measured using a diffuse illumination source (Tearscope) and videotography.
A longer NIBUT indicates a more stable tear film and greater on-eye lens wettability.
One eye (study eye) contributed to the mean.
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Day 30
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LogMAR Time-Controlled Visual Acuity (TCVA)
Tidsramme: Day 30
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Visual performance was measured binocularly (both eyes together) at two contrast levels using a validated Time Controlled Visual Acuity test (TCVA).
TCVA was recorded in VA units (1 VA unit=1 VA line=0.1 logMAR), with positive (+) values corresponding with VA better than 20/20 and negative (-) values worse than 20/20.
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Day 30
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Overall Comfort Measured With Visual Analog Scale (VAS)
Tidsramme: Day 30
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The participant rated overall comfort on a 100-millimeter analog scale by marking a line that best corresponds to their eye comfort (0=very poor, 100=excellent).
Both eyes were rated together as a single, retrospective evaluation of the previous 3 days of wear.
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Day 30
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Overall Dryness Measured With Visual Analog Scale (VAS)
Tidsramme: Day 30
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The participant rated overall dryness on a 100-millimeter analog scale by marking a line that best describes how dry their eyes feel (0=not at all dry, 100=very dry).
Both eyes were rated together as a single, retrospective evaluation of the previous 3 days of wear.
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Day 30
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Average Exposure Speed
Tidsramme: Day 30
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Exposure speed (rate of increase in exposed lens surface % (areas not protected by tear film) after the first tear film break and before the second blink) was measured with a diffuse illumination source (Tearscope) and videotography.
Higher speeds indicate worse tear film dynamics.
One eye (study eye) contributed to the mean.
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Day 30
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Minimum Protected Area
Tidsramme: Day 30
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Minimum protected area (i.e., minimum area of the lens (%) covered by the tear film during the interblink period) was measured using a diffuse illumination source (Tearscope) and videotography.
A higher value indicates a larger area of the tearfilm spread evenly over the lens (i.e., less area of tear film breakage).
One eye (study eye) contributed to the mean.
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Day 30
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- M-12-043 / ID11-59
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