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.
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
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
30
contact lens care system
contact lens care system
Centre for Contact Lens Research, School of Optometry, University of Waterloo.
Waterloo, Ontario, Canada
High Contrast Visual Acuity
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.
Time frame: 2 weeks
Low Contrast Visual Acuity
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.
Time frame: 2 weeks
In-vivo Wettability
Pre-lens non-invasive tear breakup time
Time frame: 2 weeks
Subjective Comfort Rating
Numeric rating scale was administered. Comfort ratings (0 - 100), 0 = Very poor comfort and 100 = Excellent comfort.
Time frame: 2 weeks
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