The aim of this prospective study is to evaluate the clinical performance of fanfilcon A toric and lotrafilcon B toric contact lenses after 1 month of wear in each pair.
The aim of this prospective study is to evaluate the clinical performance of Avaira Vitality toric (fanfilcon A) and AIR OPTIX for Astigmatism (lotrafilcon B) contact lenses after 1 month of wear in each pair.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
42
Contact lens
Contact lens
Optometry Clinic, National Autonomous University
Mexico City, Mexico
Lens Centration
Centration of lens on eye in primary gaze (1-3 scale; 1=optimal centration, 2=Decentration acceptable, slightly, 3 = decentration unacceptable)
Time frame: Baseline
Lens Centration
Centration of lens on eye in primary gaze (1-3 scale; 1=optimal centration, 2=Decentration acceptable, slightly, 3 = decentration unacceptable)
Time frame: Dispense
Lens Centration
Centration of lens on eye in primary gaze (1-3 scale; 1=optimal centration, 2=Decentration acceptable, slightly, 3 = decentration unacceptable)
Time frame: 1 Month
Corneal Coverage
Evaluate corneal coverage of contact lens (Yes=Full, No=Incomplete)
Time frame: Baseline
Corneal Coverage
Evaluate corneal coverage of contact lens (Yes=Full, No=Incomplete)
Time frame: Dispense
Corneal Coverage
Evaluate corneal coverage of contact lens (Yes=Full, No=Incomplete)
Time frame: 1 Month
Post-blink Movement
Amount of lens movement after blink (0-4 scale, 0=insufficient, unacceptable movement, 2=optimal movement, 3=moderate, but acceptable movement 4=excessive, unacceptable movement)
Time frame: Baseline
Post-blink Movement
Amount of lens movement after blink (0-4 scale, 0=insufficient, unacceptable movement, 2=optimal movement, 3=moderate, but acceptable movement 4=excessive, unacceptable movement)
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Time frame: Dispense
Post-blink Movement
Amount of lens movement after blink (0-4 scale, 0=insufficient, unacceptable movement, 2=optimal movement, 3=moderate, but acceptable movement 4=excessive, unacceptable movement)
Time frame: 1 Month
Overall Fit Acceptance
Assessed by investigator based on lens fit alone (0-4 scale; 0=should not be worn, 4=perfect)
Time frame: Dispense
Overall Fit Acceptance
Assessed by investigator based on lens fit alone (0-4 scale; 0=should not be worn, 4=perfect)
Time frame: 1 Month
Average Hours of Wear Per Day
Number of hours lenses are worn per day
Time frame: Baseline
Average Hours of Wear Per Day
Number of hours lenses are worn per day
Time frame: 1 month
Average Comfortable Wearing Time
Typical time of day when subject first experiences lens awareness or irritation.
Time frame: Baseline
Average Comfortable Wearing Time
Typical time of day when subject first experiences lens awareness or irritation
Time frame: 1 Month