The aim of this study is to compare the subjective performance of the comfilcon A contact lens against lotrafilcon B contact lens after 4 weeks of reusable lens wear.
This will be a 80 subject, randomized, bilateral, double-masked, dispensing, cross-over study comparing comfilcon A versus lotrafilcon B lenses over 4 weeks of daily wear for each lens pair.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
85
contact lens
contact lens
Eyesite
Reading, Berkshire, United Kingdom
Brock and Houlford
Chew Magna, Bristol, United Kingdom
Tempany's Boutique Opticians
Broadstone, Dorset, United Kingdom
Chalmers Opticians
Cardiff, Glamorgan, United Kingdom
Comfort
Comfort (insertion, end of the day, and overall) for habitual lenses assessed at baseline and comfilcon A and lotrafilcon B lenses assessed at 2 weeks and 4 weeks. Scale 0-10, 0=painful, 10=can't feel the lenses.
Time frame: Baseline, 2 weeks, 4 weeks
Comfort During the Day
Comfort during the day for comfilcon A and lotrafilcon B lenses assessed via via SMS (short message service) text message at days 3,12, and 26 at hours 8:00 am, 12:00 pm, 4:00 pm, and 8:00 pm. Scale 0-10, 0=painful, 10=can't feel the lenses.
Time frame: Days 3, 12, 26
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Leightons
St Albans, Hertfordshire, United Kingdom
David Gould Opticians
Rawtenstall, Lancashire, United Kingdom
Harrold Opticians
Uxbridge, Middlesex, United Kingdom
Boots Opticians Ltd
Birmingham, Warwickshire, United Kingdom
Visioncare Research Ltd.
Farnham, United Kingdom