Comparison of Lens Care Regimens With a Silicone Hydrogel Lens (Emerald)
20. august 2010 opdateret af: University of Waterloo
The purpose of the study is to evaluate and compare, on a daily wear basis, the performance of two contact lens care solutions when used with silicone hydrogel soft contact lenses with regards to comfort and dryness symptoms.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
The purpose of the study is to evaluate and compare, on a daily wear basis, the performance of two contact lens care solutions when used with silicone hydrogel soft contact lenses with regards to comfort and dryness symptoms by observing changes within the cornea and collecting subjective ratings
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
30
Fase
- Fase 3
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
-
Ontario
-
Waterloo, Ontario, Canada, N2L3G1
- Centre for Contact Lens Research, School of Optometry, University of Waterloo.
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
17 år og ældre (Barn, Voksen, Ældre voksen)
Tager imod sunde frivillige
Ja
Køn, der er berettiget til at studere
Alle
Beskrivelse
Inclusion Criteria:
A person is eligible for inclusion in the study if he/she:
- Is at least 17 years of age and has full legal capacity to volunteer.
- Has read, understood and signed an information consent letter.
- Is willing and able to follow instructions and maintain the appointment schedule.
- Is presently using either bi-weekly or monthly replacement lenses.
- Has symptoms of ocular dryness as determined by specific pre-screening criteria.
- Is correctable to a visual acuity of 6/9 or better (in each eye) with their habitual vision correction.
- Has clear corneas and no active ocular disease.
- Has had an ocular examination in the last two years.
Exclusion Criteria:
A person will be excluded from the study if he/she:
- Is an asymptomatic lens wearer.
- Is a daily disposable contact lens wearer.
- Is a current extended wear contact lens wearer.
- Currently uses one of the study lens care regimens.
- Has any clinically significant blepharitis.
- Has undergone corneal refractive surgery.
- Is aphakic.
- Has any active ocular disease.
- Has any systemic disease affecting ocular health.
- Is using any systemic or topical medications that may affect ocular health.
- Has known sensitivity to the diagnostic pharmaceuticals to be used in the study.
- Is participating in any other type of clinical or research study.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Dobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: 2
|
contact lens care system
|
|
Aktiv komparator: 1
|
contact lens care system
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
High Contrast Visual Acuity
Tidsramme: 2 weeks
|
High Contrast Visual Acuity with contact lenses, was measured using standardized and computer generated logMAR chart. 10 Sloan letters adopted. VA chart's target size varied from logMAR 1.0 to -0.40 in 0.1 logMAR step. |
2 weeks
|
|
Low Contrast Visual Acuity
Tidsramme: 2 weeks
|
Low Contrast Visual Acuity with contact lenses, was measured using standardized and computer generated logMAR chart. 10 Sloan letters adopted. VA chart's target size varied from logMAR 1.0 to -0.40 in 0.1 logMAR step. |
2 weeks
|
|
In-vivo Wettability
Tidsramme: 2 weeks
|
Pre-lens non-invasive tear breakup time
|
2 weeks
|
|
Subjective Comfort Rating
Tidsramme: 2 weeks
|
Numeric rating scale was administered.
Comfort ratings (0 - 100), 0 = Very poor comfort and 100 = Excellent comfort.
|
2 weeks
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Desmond Fonn, M. Optom, University of Waterloo
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. august 2007
Primær færdiggørelse (Faktiske)
1. december 2008
Studieafslutning (Faktiske)
1. december 2008
Datoer for studieregistrering
Først indsendt
21. august 2007
Først indsendt, der opfyldte QC-kriterier
23. august 2007
Først opslået (Skøn)
24. august 2007
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
16. september 2010
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
20. august 2010
Sidst verificeret
1. august 2010
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- P/265/07/L
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .
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