The objective of this study is to evaluate the subjective acceptance of comfilcon A toric contact lens, compared to samfilcon A toric lens.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
49
Contact lens
Contact lens
University of Waterloo
Waterloo, Ontario, Canada
Comfort at Insertion
Subjective ratings of comfort for each pair of lenses (scale: 0-10; 0=painful,10=can't feel lens)
Time frame: Dispense
Comfort
Subjective ratings of comfort for each pair of lenses (scale: 0-10; 0=painful,10=can't feel lens)
Time frame: 2 weeks
Comfort
Subjective ratings of comfort for each pair of lenses (scale: 0-10; 0=painful,10=can't feel lens)
Time frame: 1-month
Lens Preference Based on Overall Comfort
Lens preference with respect to comfort (Prefer pair-1 strongly, Prefer pair-1 slightly, Prefer pair-2 strongly, prefer pair-2 slightly, No preference)
Time frame: 1 month
Lens Preference Based on Overall Dryness
Lens preference with respect to dryness (Prefer pair-1 strongly, Prefer pair-1 slightly, Prefer pair-2 strongly, prefer pair-2 slightly, No preference)
Time frame: 1 month
Dryness
Subjective ratings of dryness for each pair of lenses (scale: 0-10; 0=Extremely dry, 10=No dryness)
Time frame: 2 weeks
Dryness
Subjective ratings of dryness for each pair of lenses (scale: 0-10; 0=Extremely dry, 10=No dryness)
Time frame: 1-month
Ease of Insertion
Subjective rating of ease of inserting the lens onto the eye (scale 0-10; 0=very difficult, 10=very easy)
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Time frame: Dispense
Ease of Insertion
Subjective rating of ease of inserting the lens onto the eye (scale 0-10; 0=very difficult, 10=very easy)
Time frame: 2-weeks
Ease of Insertion
Subjective rating of ease of inserting the lens onto the eye (scale 0-10; 0=very difficult, 10=very easy)
Time frame: 1-month
Ease of Removal
Subjective rating of ease of removing the lens from the eye (scale 0-10; 0=very difficult, 10=very easy)
Time frame: 2-weeks
Ease of Removal
Subjective rating of ease of removing the lens from the eye (scale 0-10; 0=very difficult, 10=very easy)
Time frame: 1 month