Contact Lens Adaptation in Neophytes (CLAN)
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
Studietype
Studietype
Inschrijving (Werkelijk)
Inschrijving
Fase
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Ohio
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Columbus, Ohio, Verenigde Staten, 43210
- The Ohio State University
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Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Has had a completed comprehensive eye exam within the past 6 months
- Able to wear spherical senofilcon A contact lenses
- Able to use Opti-Free PureMoist contact lens solution
Exclusion Criteria:
- Any prior contact lens use
- Topical eye drops within the last two hours of the study visit
- Known systemic health conditions known to alter tear film physiology
- History of severe ocular trauma
- Active ocular infection
- Active ocular inflammation
- Known hypersensitivity to diagnostic eye drops
- Pregnant or breast feeding
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Enkel
Aantal wapens
Wapens en interventies
Deelnemersgroep / ArmDeelnemersgroep / Arm |
Interventie / BehandelingInterventie / Behandeling |
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Experimenteel: Full-Time Senofilcon A Contact Lens Wear
This group will start wearing contact lenses 8 or more hours per day on the first day of wear
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Andere namen:
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Experimenteel: Graduated Senofilcon A Contact Lens Wear
This group will start wearing contact lenses on a graduated schedule (day 1 = 2 hours, day 2 = 4 hours, day 3 = 6 hours, day 4 = 8 hours, day 5 = 8 or more hours).
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Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Between-Group Difference in Eye Comfort as Measured by the Ocular Surface Disease Index (OSDI)
Tijdsspanne: 2 weeks
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This is an eye comfort survey.
The Ocular Surface Disease Index (OSDI) is assessed on a scale of 0 to 100, with higher scores representing greater disability.
The index demonstrates sensitivity and specificity in distinguishing between normal subjects and patients with dry eye disease.
The OSDI is a valid and reliable instrument for measuring dry eye disease (normal, mild to moderate, and severe) and effect on vision-related function.
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2 weeks
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Secundaire uitkomstmaten
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Between-Group Difference in Visual Acuity as Measured With the Bailey-Lovie Chart
Tijdsspanne: 2 weeks
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The investigator will measure the subject's visual acuity with a Bailey-Lovie high-contrast paper (logMAR) chart.
logMAR is a method used to observe visual acuity.
Smaller numbers are better scores.
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2 weeks
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Between-Group Difference in Tear Stability as Measured by Non-Invasive Break Up Time (NIBUT)
Tijdsspanne: 2 Weeks
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Non-Invasive Break Up Time (NIBUT) is a measure of tear stability.
The range is 0 to 60 seconds with longer times being better tear stability.
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2 Weeks
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Between-Group Difference in Tear Volume as Measured by Tear Meniscus Height (TMH)
Tijdsspanne: 2 Weeks
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Tear Meniscus Height (TMH) was used at a measure of tear volume.
The range is 0.0 to 2.0 mm with higher values being more tear volume.
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2 Weeks
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Between-Group Difference in Bulbar Conjunctival Redness as Measured With the Keratograph 5M
Tijdsspanne: 2 Weeks
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Eye redness was measured via bulbar conjunctival redness as measured with the Keratograph 5M.
The range is 0 to 4 units with lower numbers being better.
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2 Weeks
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Between-Group Difference in Upper and Lower Eyelid Blepharitis
Tijdsspanne: 2 Weeks
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A slit-lamp biomicroscope was used to document eyelid blepharitis with a 0-3 scale by each eyelid with higher scores being worse blepharitis.
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2 Weeks
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Between-Group Difference in Corneal Sodium Fluorescein Staining
Tijdsspanne: 2 Weeks
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The Brien Holden Vision Institute grading scale was used to evaluate staining by observing the eye after applying sodium fluorescein.
Scores were given for the extent (0-20 units), depth (0-20 units), type (0-20 units) of staining.
Higher scores indicate worse staining.
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2 Weeks
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Between-Group Difference in Tear Volume as Measured by Schirmer's Test I
Tijdsspanne: 2 Weeks
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Tear volume was assessed with Schirmer's Test I test over 5 mins.
This test has a 0-35 mm range with higher values being better tear volume.
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2 Weeks
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Between-Group Difference in End of Day Contact Lens Comfort as Measured With a Visual Analog Scale (VAS)
Tijdsspanne: 2 Weeks
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End of day contact lens comfort was measured with a visual analog scale (1-100 scale).
Higher scores indicate better comfort.
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2 Weeks
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Between-Group Difference in Contact Lens Dry Eye-8 Questionnaire (CLDEQ-8) Scores
Tijdsspanne: 2-Weeks
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Contact lens comfort was measured with a scale (1-37 scale).
Lower scores indicate better comfort.
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2-Weeks
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Medewerkers en onderzoekers
Sponsor
Sponsor
Medewerkers
Medewerkers
Onderzoekers
Onderzoekers
- Hoofdonderzoeker: Andrew D Pucker, OD, MS, Ohio State University
- Hoofdonderzoeker: Jeffrey J Walline, OD, PhD, Ohio State University
Publicaties en nuttige links
Algemene publicaties
- Sullivan BD, Whitmer D, Nichols KK, Tomlinson A, Foulks GN, Geerling G, Pepose JS, Kosheleff V, Porreco A, Lemp MA. An objective approach to dry eye disease severity. Invest Ophthalmol Vis Sci. 2010 Dec;51(12):6125-30. doi: 10.1167/iovs.10-5390. Epub 2010 Jul 14.
- Sullivan BD, Crews LA, Sonmez B, de la Paz MF, Comert E, Charoenrook V, de Araujo AL, Pepose JS, Berg MS, Kosheleff VP, Lemp MA. Clinical utility of objective tests for dry eye disease: variability over time and implications for clinical trials and disease management. Cornea. 2012 Sep;31(9):1000-8. doi: 10.1097/ICO.0b013e318242fd60.
- Bron AJ, Evans VE, Smith JA. Grading of corneal and conjunctival staining in the context of other dry eye tests. Cornea. 2003 Oct;22(7):640-50. doi: 10.1097/00003226-200310000-00008.
- Yang SN, Tai YC, Sheedy JE, Kinoshita B, Lampa M, Kern JR. Comparative effect of lens care solutions on blink rate, ocular discomfort and visual performance. Ophthalmic Physiol Opt. 2012 Sep;32(5):412-20. doi: 10.1111/j.1475-1313.2012.00922.x. Epub 2012 Jul 7.
- Dougherty BE, Nichols JJ, Nichols KK. Rasch analysis of the Ocular Surface Disease Index (OSDI). Invest Ophthalmol Vis Sci. 2011 Nov 7;52(12):8630-5. doi: 10.1167/iovs.11-8027.
- Chalmers RL, Begley CG. Dryness symptoms among an unselected clinical population with and without contact lens wear. Cont Lens Anterior Eye. 2006 Mar;29(1):25-30. doi: 10.1016/j.clae.2005.12.004. Epub 2006 Jan 31.
- Faber E, Golding TR, Lowe R, Brennan NA. Effect of hydrogel lens wear on tear film stability. Optom Vis Sci. 1991 May;68(5):380-4. doi: 10.1097/00006324-199105000-00010.
- Efron N, Morgan PB, Katsara SS. Validation of grading scales for contact lens complications. Ophthalmic Physiol Opt. 2001 Jan;21(1):17-29.
- Pucker AD, Steele K, Rueff E, Franklin QX, McClure K, Savla K, Walline JJ. Contact Lens Adaption in Neophytes. Optom Vis Sci. 2021 Mar 1;98(3):266-271. doi: 10.1097/OPX.0000000000001662.
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Studie start
Primaire voltooiing (Werkelijk)
Primaire voltooiing
Studie voltooiing (Werkelijk)
Studie voltooiing
Studieregistratiedata
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Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
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Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Andere studie-ID-nummers
Andere studie-ID-nummers
- 2014H0074
- K08EY023264 (Subsidie/contract van de Amerikaanse NIH)
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