A Comparison of Daily Disposable Contact Lenses.
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Bath, United Kingdom, BA1 1BA
- Ellis & Killpartrick
-
London, United Kingdom, EC3V 1LT
- Hawkes & Wainer
-
London, United Kingdom, WC2A 1AA
- City Opticians
-
Northampton, United Kingdom, NN2 7BL
- Tompkins Knight & Son
-
York, United Kingdom, YO1 8BA
- Viewpoint
-
-
Bedfordshire
-
Bedford, Bedfordshire, United Kingdom, MK40 1NS
- Simon Donne Opticians 3-4
-
-
Bristol
-
Brislington, Bristol, United Kingdom, BS4 3LJ
- Brock & Houlford
-
-
Devon
-
Plymouth, Devon, United Kingdom, PL1 1LB
- The Contact Lens Centre
-
-
Dorset
-
Broadstone, Dorset, United Kingdom, BH18 8DH
- Keith Tempany Opticians
-
-
Essex
-
Ilford, Essex, United Kingdom, IG1 4DU
- Eyecare
-
-
Herts
-
Albans, Herts, United Kingdom, AL1 3LH
- Leightons Opticians
-
-
Isle of Wight
-
Shanklin, Isle of Wight, United Kingdom, PO37 6JZ
- Hazel Smith Opticians
-
-
Kent
-
Gillingham, Kent, United Kingdom, ME7 2YX
- Bowden & Lowe
-
-
Lancashire
-
Rawtenstall, Lancashire, United Kingdom, BB4 7QN
- David Gould Opticians
-
-
London
-
Hendon, London, United Kingdom, NW4 3FB
- Vision Express Optical Lab
-
Tottenham, London, United Kingdom, N17 0EY
- David H Burns BSC, FCOptom
-
-
Middlesex
-
Eastcote Pinner, Middlesex, United Kingdom, HA5 1RJ
- First Contact Opticians
-
-
South Glamorgan
-
Cardiff, South Glamorgan, United Kingdom, CF24 3RQ
- Chalmers & Son (Opticians)
-
-
West Midlands
-
Coventry, West Midlands, United Kingdom, CV4 9DU
- Susan R Bowers Opticians
-
-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- They are of legal age (18 years) and capacity to volunteer.
- They understand their rights as a research subject and are willing to sign a Statement of Informed Consent.
- They are willing and able to follow the protocol.
- They would be expected to attain at least 6/9 (20/30) in each eye with the study lenses.
- They are able to wear contact lenses with a back vertex power of -1.00 to -6.00DS.
- They have a maximum of 1.00D of refractive astigmatism (i.e. ≤ 1.00 DC).
- They have successfully worn contact lenses within six months of starting the study.
Exclusion Criteria:
- They have an ocular disorder which would normally contra-indicate contact lens wear.
- They have a systemic disorder which would normally contra-indicate contact lens wear.
- They are using any topical medication such as eye drops or ointment.
- They are aphakic.
- They have had corneal refractive surgery.
- They have any corneal distortion resulting from previous hard or rigid lens wear or has keratoconus.
- They are pregnant or lactating.
- They have grade 2 or greater of any of the following ocular surface signs: corneal oedema, corneal vascularisation, corneal staining, tarsal conjunctival changes or any other abnormality which would normally contraindicate contact lens wear.
- They have any infectious disease (e.g. hepatitis) or any immunosuppressive disease (e.g. HIV).
- They have diabetes.
- They have taken part in any other clinical trial or research, within two weeks prior to starting this study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Active Comparator: narafilcon A
spherical soft contact lens worn as a daily disposable modality for one week
|
spherical soft contact lens
|
|
Active Comparator: nelfilcon A
spherical soft contact lens worn as a daily disposable modality for one week
|
spherical soft contact lens
spherical soft contact lens
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Overall Comfort
Time Frame: at 1 week of wear.
|
Single question: Comfort scale: 0=N/A, 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent
|
at 1 week of wear.
|
|
Measured Limbal Hyperemia
Time Frame: at 1 week of wear.
|
Measurement of redness of the limbus, graded using half-grade increments using the following scale: 0=none, 1=trace, 2=mild, 3=moderate, 4=severe.
|
at 1 week of wear.
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Overall Handling
Time Frame: at 1 week of wear
|
Rating of overall ease of handling using the following scale: 0=N/A, 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent.
|
at 1 week of wear
|
|
How Comfortable Eyes Feel at the End of the Day
Time Frame: at 1 week wear
|
Rating of "How comfortable did your eyes feel at the end of the day when wearing the contact lenses provided" using the following scale: 1=extremely uncomfortable, 2= very uncomfortable, 3=slightly uncomfortable, 4=comfortable, 5=very comfortable.
|
at 1 week wear
|
|
End of Day Comfort
Time Frame: at 1 week of wear
|
Rating of comfort at the end of the day using the following scale: 0=N/A, 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent
|
at 1 week of wear
|
|
Initial Comfort
Time Frame: at 1 week
|
Rating of "comfort immediately when you first put them on" using the following scale: 0=N/A, 1= Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent.
|
at 1 week
|
|
Inferior Region Corneal Staining
Time Frame: at 1 week of wear
|
National Eye Institute (NEI) 0-3 scale: grade 0=normal, grade 1=mild, grade 2=moderate, grade 3=severe.
|
at 1 week of wear
|
Collaborators and Investigators
Sponsor
Sponsor
Collaborators
Collaborators
Study record dates
Study Major Dates
Study Start
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Estimate)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- CR-0808
- PROD-501
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