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- Klinische proef NCT01699750
Comparative In-Vivo Wetting Characteristics of Silicone Hydrogel Materials With Selected Lens Care Systems
3 december 2014 bijgewerkt door: Alcon Research
The purpose of this study is to evaluate the lipid uptake, wetting characteristics, and visual performance of AIR OPTIX® AQUA and ACUVUE® OASYS® with HYDRACLEAR® contact lenses when used in conjunction with two contact lens care systems.
Studie Overzicht
Toestand
Voltooid
Conditie
Gedetailleerde beschrijving
This study will be divided into two phases.
In the Pre-Investigational Phase (Phase 1), participants will wear PureVision contact lenses for 30 days and use ReNu® Multiplus® for contact lens care.
Eligible participants will continue into the Investigational Phase (Phase 2) and be randomly assigned to wear AIR OPTIX® AQUA contact lenses or ACUVUE® OASYS® with HYDRACLEAR® contact lenses for a total of two months.
For contact lens care, participants will use OPTI-FREE® PUREMOIST® MPDS and BIOTRUE® for 30 days each.
Studietype
Ingrijpend
Inschrijving (Werkelijk)
109
Fase
- Niet toepasbaar
Contacten en locaties
In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.
Studie Locaties
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Texas
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Fort Worth, Texas, Verenigde Staten, 76134
- Contact Alcon Call Center at 1-888-451-3937 for Trial Locations
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Deelname Criteria
Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
18 jaar en ouder (Volwassen, Oudere volwassene)
Accepteert gezonde vrijwilligers
Nee
Geslachten die in aanmerking komen voor studie
Allemaal
Beschrijving
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.
Studie plan
Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.
Hoe is de studie opgezet?
Ontwerpdetails
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Enkel
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: 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
Andere namen:
Contact lens care system, Phase 2
Andere namen:
Contact lens care system, Phase 2
Silicone hydrogel contact lenses worn for 30 days, Phase 1
Andere namen:
Contact lens care system used for 30 days, Phase 1
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Actieve vergelijker: Acuvue Oasys
Senofilcon A contact lenses with OFPM and BIOTRUE for 30 days each
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Contact lens care system, Phase 2
Andere namen:
Contact lens care system, Phase 2
Silicone hydrogel contact lenses worn for 30 days, Phase 1
Andere namen:
Contact lens care system used for 30 days, Phase 1
Silicone hydrogel contact lenses, Phase 2
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Mean Ex-Vivo Total Lipid Uptake Per Lens
Tijdsspanne: 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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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Mean Non-Invasive Pre-Lens Tear Film Break Up Time (NIBUT)
Tijdsspanne: 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)
Tijdsspanne: 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)
Tijdsspanne: 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)
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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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Medewerkers en onderzoekers
Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.
Sponsor
Studie record data
Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.
Bestudeer belangrijke data
Studie start
1 december 2012
Primaire voltooiing (Werkelijk)
1 november 2013
Studie voltooiing (Werkelijk)
1 november 2013
Studieregistratiedata
Eerst ingediend
2 oktober 2012
Eerst ingediend dat voldeed aan de QC-criteria
2 oktober 2012
Eerst geplaatst (Schatting)
4 oktober 2012
Updates van studierecords
Laatste update geplaatst (Schatting)
8 december 2014
Laatste update ingediend die voldeed aan QC-criteria
3 december 2014
Laatst geverifieerd
1 december 2014
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- M-12-043 / ID11-59
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