Clinical Performance of Biofinity Toric Versus Air Optix for Astigmatism

Study Overview
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Brief Summary
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The aim of this study is to compare the clinical performance of the Biofinity Toric (comfilcon A) contact lens, versus Air Optix for Astigmatism (lotrafilcon B) over 1 month of daily wear.

Detailed Description
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Single masked, open label, randomized, bilateral, crossover study design comparing comfilcon A against lotrafilcon B lenses over 1 month of daily wear for each study lens. Each subject will be randomized to wear the test lens (comfilcon A) or the control lens (lotrafilcon B) for one month of daily wear before repeating the schedule for the second pair without a washout period.

Official Title
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A Single-Center Study Comparing the Clinical Performance of Biofinity Toric Versus Air Optix for Astigmatism Over 1 Month of Daily Wear.

Conditions
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Astigmatism

Intervention / Treatment
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* Device: comfilcon A
* Device: lotrafilcon B


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: A person is eligible for inclusion in the study if he/she: Is between 18 and 40 years of age (inclusive) Has had a self-reported visual exam in the last two years Is an adapted soft toric contact lens wearer Has a contact lens spherical prescription between +6.00 to - 10.00 (inclusive) Have no less than 0.75diopter (D) of astigmatism and no more than 2.25D in both eyes. Can achieve best corrected spectacle distance visual acuity of 20/25 (0.10 logMAR) or better in each eye. Can achieve a distance visual acuity of 20/30 (0.18 logMAR) or better in each eye with the study contact lenses. Has clear corneas and no active ocular disease Has read, understood and signed the information consent letter. Patient contact lens refraction should fit within the available parameters of the study lenses. Is willing to comply with the wear schedule (at least 5 days per week, > 8 hours/day assuming there are no contraindications for doing so). Is willing to comply with the visit schedule Exclusion Criteria: A person will be excluded from the study if he/she: Has a contact lens prescription outside the range of the available parameters of the study lenses. Has a spectacle cylinder less than -0.75D or more than -2.25 D of cylinder in either eye. Has a history of not achieving comfortable contact lens wear (5 days per week; > 8 hours/day) Has contact lens best corrected distance vision worse than 20/25 (0.10 logMAR) in either eye. Presence of clinically significant (grade 2-4) anterior segment abnormalities Presence of ocular or systemic disease or need of medications which might interfere with contact lens wear. Slit lamp findings that would contraindicate contact lens wear such as: Pathological dry eye or associated findings Pterygium, pinguecula, or corneal scars within the visual axis Neovascularization > 0.75 mm in from of the limbus Giant papillary conjunctivitis (GCP) worse than grade 1 Anterior uveitis or iritis (past or present) Seborrheic eczema, Seborrheic conjunctivitis History of corneal ulcers or fungal infections Poor personal hygiene Has a known history of corneal hypoesthesia (reduced corneal sensitivity) Has aphakia, keratoconus or a highly irregular cornea. Has Presbyopia or has dependence on spectacles for near work over the contact lenses. Has undergone corneal refractive surgery. Is participating in any other type of eye related clinical or research study.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: comfilcon A<br>Each subject randomized to wear the test lens (comfilcon A) or the control lens (lotrafilcon B) for one month of daily wear before repeating the schedule for the second pair without a washout period. | Device: comfilcon A<br>* test lens Pair(comfilcon A) or the control lens Pair(lotrafilcon B)<br>* Other names: Biofinity Toric;Device: lotrafilcon B<br>* test lens Pair(comfilcon A) or the control lens Pair(lotrafilcon B)<br>* Other names: Air Optix;|
| Active Comparator: lotrafilcon B<br>Each subject randomized to wear the test lens (comfilcon A) or the control lens (lotrafilcon B) for one month of daily wear before repeating the schedule for the second pair without a washout period. | Device: comfilcon A<br>* test lens Pair(comfilcon A) or the control lens Pair(lotrafilcon B)<br>* Other names: Biofinity Toric;Device: lotrafilcon B<br>* test lens Pair(comfilcon A) or the control lens Pair(lotrafilcon B)<br>* Other names: Air Optix;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Daily and Comfortable Wearing Time | Participant rating of lens Daily and Comfortable Wearing Time. Collected at baseline for all habitual lenses. (The hours of average comfortable wearing time and average daily wearing time.) | Baseline | 
| Comfort, Dryness, Handling, Lens Fit Stability, Vision Satisfaction | Participant rating of lens Comfort, Dryness, Handling, Lens Fit Stability and Vision Satisfaction. Collected at baseline for all habitual lenses. (0-10; Comfort, Lens Fit and Satisfaction / 0=very poor,10=excellent; Dryness / 0=very dry, 10=no dryness; Handling / 0=very difficult, 10=very easy for handling) | Baseline | 
| Vision Quality Insertion, During Day, End Day | Participant rating of vision quality on insertion, during the day, end of day. Collected at baseline for all habitual lenses. (0-100; 0=extremely poor vision totally blurred, 100=excellent vision totally sharp) | Baseline | 
| Vision Stability Insertion, During Day, End Day | Participant rating of vision stability on insertion, during the day, end of day. Collected at baseline for all habitual lenses. (0-100; 0=totally unstable fluctuating/changing, 100=perfectly stable not fluctuating/changing) | Baseline | 
| Overall Sensation of Moistness | Participant rating for overall sensation of moistness. Collected at baseline for all habitual lenses. (5-point Likert Scale; Excellent, Good, Average, Below Average) | Baseline | 
| Overall Sensation of Smoothness | Participant rating for overall sensation of smoothness. Collected at baseline for all habitual lenses. (5-point Likert Scale; Excellent, Good, Average, Below Average) | Baseline | 
| Comfort Satisfaction | Participant rating for comfort satisfaction. Collected at baseline for all habitual lenses. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | Baseline | 
| Dryness Satisfaction | Participant rating for dryness satisfaction. Collected at baseline for all habitual lenses. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | Baseline | 
| Handling Satisfaction | Participant rating for handling satisfaction. Collected at baseline for all habitual lenses. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | Baseline | 
| Lens Fit Satisfaction | Participant rating for lens fit satisfaction. Collected at baseline for all habitual lenses. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | Baseline | 
| Vision Satisfaction | Participant rating for vision satisfaction. Collected at baseline for all habitual lenses. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | Baseline | 
| Overall Satisfaction | Participant rating for overall satisfaction. Collected at baseline for all habitual lenses. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | Baseline | 
| Comfort Upon Contact Lens Insertion | Participant rating of comfort upon insertion. Collected at dispense for each lens. (0-10; 10=Can't Feel) | Dispense | 
| Vision Satisfaction Upon Contact Lens Insertion | Participant rating of vision satisfaction upon insertion. Collected at dispense for each lens. (0-10; 10= Very Satisfied) | Dispense | 
| Vision Quality With Contact Lens Prescription | Participant rating of Vision Quality with contact lens prescription. Collected at dispense for each lens. (0-100; 0=extremely poor vision totally blurred, 100=excellent vision totally sharp) | Dispense | 
| Vision Stability Upon Contact Lens Insertion | Participant rating of vision stability on insertion. Collected at dispense for each lens. (0-100; 0=extremely poor vision totally blurred, 100=excellent vision totally sharp) | Dispense | 
| Visual Acuity logMAR | Assessment of monocular and binocular high and low contrast visual acuity (VA). Collected at dispense for each lens. logMAR (VA). | Dispense | 
| Centration | Assessment of Lens Fit Performance for centration. Collected at dispense for each lens. (Biomicroscopy; centered or slightly decentered) | Dispense | 
| Corneal Coverage | Assessment of Lens Fit Performance for corneal coverage. Collected at dispense for each lens. Corneal coverage assessed in primary gaze: (yes=full corneal coverage at all times, no=incomplete corneal coverage) | Dispense | 
| Post Blink Movement | Assessment of Lens Fit Performance for post blink movement. Collected at dispense for each lens. (0-4, 0.5 increments; 0=Insufficient, unacceptable movement, 4= Excessive, unacceptable movement) | Dispense | 
| Lens Orientation Primary Gaze | Assessment of Lens Fit Performance for lens orientation in primary position of gaze. Collected at dispense for each lens. (Degree of mislocation relative to lens axis mark.) | Dispense | 
| Lens Marking Visibility | Assessment of Lens Fit Performance for lens marking visibility. Collected at dispense for each lens. (1-3, 1=excellent, 2=average, 3=poor) | Dispense | 
| Lens Stability on Blink | Assessment of Lens Fit Performance for lens rotational stability on blink. Collected at dispense for each lens. (No rotation and 5-10 degrees rotation from axis location mark) | Dispense | 
| Lens Stability 5-10 Min | Assessment of Lens Fit Performance for lens to stabilize in 5-10 min. Collected at dispense for each lens. (Varied less than 5 degrees from lens marking location between 5-10 min) | Dispense | 
| Lens Overall Stability | Assessment of Lens Fit Performance for overall lens stability. Collected at dispense for each lens. (Excellent or Good) | Dispense | 
| Rotational Recovery 30/45 Deg | Assessment of Lens Fit Performance for lens rotational recovery to original position. Collected at dispense for each lens. Assessed in degree of mislocation relative to original position after manual temporal rotation. (30 deg/10 blinks, 45 deg/60 sec) | Dispense | 
| Overall Fit Acceptance | Assessment of Lens Fit Performance for overall lens fit acceptance. Collected at dispense for each lens. Rated perfect or not perfect based on lens fit alone. (0-4; 0=should not be worn, 3=not perfect but OK to dispense, 4=perfect) | Dispense | 
| Daily and Comfortable Wearing Time | Participant rating of lens Daily and Comfortable Wearing Time. Collected at 2 weeks wear for each lens. (The hours of average comfortable wearing time and average daily wearing time.) | 2 weeks | 
| Daily and Comfortable Wearing Time | Participant rating of lens Daily and Comfortable Wearing Time. Collected at 4 weeks wear for each lens. (The hours of average comfortable wearing time and average daily wearing time.) | 4 weeks | 
| Participants Use of Rewetting Drops | Proportion of subjects using rewetting drops. Collected at 2 weeks for each lens. (Yes, No) | 2 Weeks | 
| Participants Use of Rewetting Drops | Proportion of subjects using rewetting drops. Collected at 4 weeks for each lens. (Yes, No) | 4 Weeks | 
| Comfort, Dryness, Handling, Lens Fit Stability, Vision Satisfaction | Participant rating of lens Comfort, Dryness, Handling, Lens Fit Stability and Vision Satisfaction. Collected at 2 weeks wear for each lens. (0-10; Comfort, Lens Fit and Satisfaction / 0=very poor,10=excellent; Dryness / 0=very dry, 10=no dryness; Handling / 0=very difficult, 10=very easy for handling) | 2 weeks | 
| Comfort, Dryness, Handling, Lens Fit Stability, Vision Satisfaction | Participant rating of lens Comfort, Dryness, Handling, Lens Fit Stability and Vision Satisfaction. Collected at 4 weeks wear for each lens. (0-10; Comfort, Lens Fit and Satisfaction / 0=very poor,10=excellent; Dryness / 0=very dry, 10=no dryness; Handling / 0=very difficult, 10=very easy for handling) | 4 weeks | 
| Vision Quality Insertion, During Day, End Day, Night | Participant rating of vision quality on insertion, during the day, end of day and night. Collected at 2 weeks wear for each lens. (0-100; 0=extremely poor vision totally blurred, 100=excellent vision totally sharp) | 2 weeks | 
| Vision Quality Insertion, During Day, End Day, Night | Participant rating of vision quality on insertion, during the day, end of day and night. Collected at 4 weeks wear for each lens. (0-100; 0=extremely poor vision totally blurred, 100=excellent vision totally sharp) | 4 weeks | 
| Vision Stability on Insertion, During Day, End Day | Participant rating of vision stability on insertion, during the day, end of day. Collected at 2 weeks wear for each lens. (0-100; 0=totally unstable fluctuating/changing, 100=perfectly stable not fluctuating/changing) | 2 weeks | 
| Vision Stability on Insertion, During Day, End Day | Participant rating of vision stability on insertion, during the day, end of day. Collected at 4 weeks wear for each lens. (0-100; 0=totally unstable fluctuating/changing, 100=perfectly stable not fluctuating/changing) | 4 weeks | 
| Overall Sensation of Moistness | Participant rating for overall sensation of moistness. Collected at 2 weeks wear for each lens. (5-point Likert Scale; Excellent, Good, Average, Below Average, Poor) | 2 weeks | 
| Overall Sensation of Moistness | Participant rating for overall sensation of moistness. Collected at 4 weeks wear for each lens. (5-point Likert Scale; Excellent, Good, Average, Below Average, Poor) | 4 weeks | 
| Overall Sensation of Smoothness | Participant rating for overall sensation of smoothness. Collected at 2 weeks wear for each lens. (5-point Likert Scale; Excellent, Good, Average, Below Average, Poor) | 2 weeks | 
| Overall Sensation of Smoothness | Participant rating for overall sensation of smoothness. Collected at 4 weeks wear for each lens. (5-point Likert Scale; Excellent, Good, Average, Below Average, Poor) | 4 weeks | 
| Comfort Satisfaction | Participant rating for comfort satisfaction. Collected at 2 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 2 weeks | 
| Comfort Satisfaction | Participant rating for comfort satisfaction. Collected at 4 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 4 weeks | 
| Dryness Satisfaction | Participant rating for dryness satisfaction. Collected at 2 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 2 weeks | 
| Dryness Satisfaction | Participant rating for dryness satisfaction. Collected at 4 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 4 weeks | 
| Handling Satisfaction | Participant rating for handling satisfaction. Collected at 2 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 2 weeks | 
| Handling Satisfaction | Participant rating for handling satisfaction. Collected at 4 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 4 weeks | 
| Vision Satisfaction | Participant rating for vision satisfaction. Collected at 2 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 2 weeks | 
| Vision Satisfaction | Participant rating for vision satisfaction. Collected at 4 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 4 weeks | 
| Lens Fit Satisfaction | Participant rating for lens fit satisfaction. Collected at 2 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 2 weeks | 
| Lens Fit Satisfaction | Participant rating for lens fit satisfaction. Collected at 4 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 4 weeks | 
| Overall Satisfaction | Participant rating for overall satisfaction. Collected at 2 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 2 weeks | 
| Overall Satisfaction | Participant rating for overall satisfaction. Collected at 4 weeks wear for each lens. (4-point Likert Scale; Completely Satisfied, Somewhat Satisfied, Somewhat Dissatisfied, Completely Dissatisfied) | 4 weeks | 
| Wavefront Aberrations Root Mean Square (RMS) (3mm) | Assessment of wavefront aberrations. Collected at 2 weeks for each lens. Wavefront measurement (3mm), Scale in microns (µm). | 2 Weeks | 
| Wavefront Aberrations RMS (3mm) | Assessment of wavefront aberrations. Collected at 4 weeks for each lens. Wavefront measurement (3mm), Scale in microns (µm). | 4 Weeks | 
| Wavefront Aberrations RMS (5mm) | Assessment of wavefront aberrations. Collected at 2 weeks for each lens. Wavefront measurement (5 mm), Scale in microns (µm). | 2 Weeks | 
| Wavefront Aberrations RMS (5mm) | Assessment of wavefront aberrations. Collected at 4 weeks for each lens. Wavefront measurement (5 mm), Scale in microns (µm). | 4 Weeks | 
| Visual Acuity logMAR | Assessment of monocular and binocular high and low contrast visual acuity (VA). Collected at 2 weeks for each lens. logMAR (VA). Monocular High Contrast Visual Acuity (MHCVA), Monocular Low Contrast Visual Acuity (MLCVA), Binocular High Contrast Visual Acuity (BHCVA), Binocular Low Contrast Visual Acuity (BLCVA) | 2 Weeks | 
| Visual Acuity logMAR | Assessment of monocular and binocular high and low contrast visual acuity (VA). Collected at 4 weeks for each lens. logMAR (VA). Monocular High Contrast Visual Acuity (MHCVA), Monocular Low Contrast Visual Acuity (MLCVA), Binocular High Contrast Visual Acuity (BHCVA), Binocular Low Contrast Visual Acuity (BLCVA) | 4 Weeks | 
| Lens Orientation Primary Gaze | Assessment of Lens Fit Performance for lens orientation in primary position of gaze. Assessed at 2 weeks wear for each lens. (Degree of mislocation relative to lens axis mark.) | 2 weeks | 
| Lens Orientation Primary Gaze | Assessment of Lens Fit Performance for lens orientation in primary position of gaze. Assessed at 4 weeks wear for each lens. (Degree of mislocation relative to lens axis mark.) | 4 weeks | 
| Rotational Recovery 30/45 Deg | Assessment of Lens Fit Performance for lens rotational recovery to original position. Collected at 2 weeks wear for each lens. Assessed in degree of mislocation relative to original position after manual temporal rotation. (30 deg/10 blinks, 45 deg/60 sec) | 2 weeks | 
| Rotational Recovery 30/45 Deg | Assessment of Lens Fit Performance for lens rotational recovery to original position. Collected at 2 weeks wear for each lens. Assessed in degree of mislocation relative to original position after manual temporal rotation. (30 deg/10 blinks, 45 deg/60 sec) | 4 weeks | 
| Lens Surface Deposits | Assessment of lens front surface deposits. Collected at 2 weeks wear for each lens. (Front surface deposits observed, 0-4, 0=clean, 4=deposits ≥0.5) | 2 weeks | 
| Lens Surface Deposits | Assessment of lens front surface deposits. Collected at 4 weeks wear for each lens. (Front surface deposits observed, 0-4, 0=clean, 4=deposits ≥0.5) | 4 weeks | 
| Centration | Assessment of Lens Fit Performance for centration. Collected at 2 weeks for each lens. Proportion of contact lenses fitted where centration was centered or slightly decentered. (Biomicroscopy) | 2 weeks | 
| Centration | Assessment of Lens Fit Performance for centration. Collected at 4 weeks for each lens. Proportion of contact lenses fitted where centration was centered or slightly decentered. (Biomicroscopy) | 4 weeks | 
| Corneal Coverage | Assessment of Lens Fit Performance for corneal coverage. Collected at 2 weks for each lens. Corneal coverage assessed in primary gaze: (yes=full corneal coverage at all times, no=incomplete corneal coverage) | 2 weeks | 
| Corneal Coverage | Assessment of Lens Fit Performance for corneal coverage. Collected at 4 weeks for each lens. Corneal coverage assessed in primary gaze: (yes=full corneal coverage at all times, no=incomplete corneal coverage) | 4 weeks | 
| Post Blink Movement | Assessment of Lens Fit Performance for post blink movement. Collected at 2 weeks for each lens. (0-4, 0.5 increments; 0=Insufficient, unacceptable movement, 4= Excessive, unacceptable movement) | 2 weeks | 
| Post Blink Movement | Assessment of Lens Fit Performance for post blink movement. Collected at 4 weeks for each lens. (0-4, 0.5 increments; 0=Insufficient, unacceptable movement, 4= Excessive, unacceptable movement) | 4 weeks | 
| Lens Marking Visibility | Assessment of Lens Fit Performance for lens marking visibility. Collected at 2 weeks for each lens. (1-3, 1=excellent, 2=average, 3=poor) | 2 weeks | 
| Lens Marking Visibility | Assessment of Lens Fit Performance for lens marking visibility. Collected at 4 weeks for each lens. (1-3, 1=excellent, 2=average, 3=poor) | 4 weeks | 
| Lens Stability on Blink | Assessment of Lens Fit Performance for lens rotational stability on blink. Collected at 2 weeks for each lens. (No rotation and 5-10 degrees rotation from axis location mark) | 2 weeks | 
| Lens Stability on Blink | Assessment of Lens Fit Performance for lens rotational stability on blink. Collected at 4 weeks for each lens. (No rotation and 5-10 degrees rotation from axis location mark) | 4 weeks | 
| Lens Stability 5-10 Min | Assessment of Lens Fit Performance for lens to stabilize in 5-10 min. Collected at 2 weeks for each lens. Varied less than 5 degrees from lens marking location between 5-10 min. | 2 weeks | 
| Lens Stability 5-10 Min | Assessment of Lens Fit Performance for lens to stabilize in 5-10 min. Collected at 4 weeks for each lens. Varied less than 5 degrees from lens marking location between 5-10 min. | 4 weeks | 
| Overall Stability | Assessment of Lens Fit Performance for overall lens stability. Collected at 2 weeks for each lens. (Excellent or Good. | 2 weeks | 
| Overall Stability | Assessment of Lens Fit Performance for overall lens stability. Collected at 4 weeks for each lens. (Excellent or Good. | 4 weeks | 
| Overall Fit Acceptance | Assessment of Lens Fit Performance for overall lens fit acceptance. Collected at 2 weeks for each lens. Rated perfect or not perfect based on lens fit alone. (0-4; 0=should not be worn, 3=not perfect but OK to dispense, 4=perfect) | 2 weeks | 
| Overall Fit Acceptance | Assessment of Lens Fit Performance for overall lens fit acceptance. Collected at 4 weeks for each lens. Rated perfect or not perfect based on lens fit alone. (0-4; 0=should not be worn, 3=not perfect but OK to dispense, 4=perfect) | 4 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Limbal Hyperaemia | Assessment of ocular health. Collected at baseline after removal of habitual lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | Baseline | 
| Limbal Hyperaemia | Assessment of ocular health. Collected at 2 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 2 weeks | 
| Limbal Hyperaemia | Assessment of ocular health. Collected at 4 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 4 weeks | 
| Bulbar Hyperaemia | Assessment of ocular health. Collected at baseline after removal of habitual lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | Baseline | 
| Bulbar Hyperaemia | Assessment of ocular health. Collected at 2 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 2 weeks | 
| Bulbar Hyperaemia | Assessment of ocular health. Collected at 4 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 4 weeks | 
| Lower Palpebral Hyperaemia | Assessment of ocular health. Collected at baseline after removal of habitual lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | Baseline | 
| Lower Palpebral Hyperaemia | Assessment of ocular health. Collected at 2 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 2 weeks | 
| Lower Palpebral Hyperaemia | Assessment of ocular health. Collected at 4 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 4 weeks | 
| Corneal Stromal Haze | Assessment of ocular health. Collected at baseline after removal of habitual lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | Baseline | 
| Corneal Stromal Haze | Assessment of ocular health. Collected at 2 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 2 weeks | 
| Corneal Stromal Haze | Assessment of ocular health. Collected at 4 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 4 weeks | 
| Corneal Neovascularization | Investigators' objective assessment of ocular health. Collected at baseline after removal of habitual lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | Baseline | 
| Corneal Neovascularization | Assessment of ocular health. Collected at 2 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 2 weeks | 
| Corneal Neovascularization | Assessment of ocular health. Collected at 4 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 4 weeks | 
| Corneal Infiltrates | Assessment of ocular health. Collected at baseline after removal of habitual lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | Baseline | 
| Corneal Infiltrates | Assessment of ocular health. Collected at 2 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 2 weeks | 
| Corneal Infiltrates | Assessment of ocular health. Collected at 4 weeks after removal of lenses. Proportion of eyes with grades 0-1 (No eyes graded >1) (Biomicroscopy, 0-4, ½ grades; 0=none: no injection present, 4=severe) | 4 weeks | 
| Participant Preference for Their Habitual Lenses or the First Study Lenses (Lotrafilcon B) | Participant preference for their habitual lenses or the first study lenses during the last two weeks with regard to comfort, dryness, handling, vision, lens fit and overall. (Forced choice; habitual, study lenses) | 2 weeks | 
| Participant Preference for Their Habitual Lenses or the First Study Lenses (Comfilcon A) | Participant preference for their habitual lenses or the first study lenses during the last two weeks with regard to comfort, dryness, handling, vision, lens fit and overall. (Forced choice; habitual, study lenses) | 2 weeks | 
| Participant Preference for Their Habitual Lenses or the First Study Lenses (Lotrafilcon B) | Participant preference for their habitual lenses or the first study lenses during the last four weeks with regard to comfort, dryness, handling, vision, lens fit and overall. (Forced choice; habitual, study lenses) | 4 weeks | 
| Participant Preference for Their Habitual Lenses or the First Study Lenses (Comfilcon A) | Participant preference for their habitual lenses or the first study lenses during the last four weeks with regard to comfort, dryness, handling, vision, lens fit and overall. (Forced choice; habitual, study lenses) | 4 weeks | 
| Participants Likelihood of Switching From Habitual Lenses to the Study Lenses | Participants likelihood of switching from habitual lenses to either pair of the study lenses when asked; How likely are they to switch from their habitual lenses to either the first study lenses or the second study lenses? Collected at 4 weeks for each study pair. (4 point Likert scale; very likely, likely, unlikely, very unlikely) | 4 weeks | 
| Participants Likelihood of Continuing to Wear the Study Lenses. | Participants likelihood of continuing to wear either of the pairs of study lenses when asked; How likely are they to continue to wearing either the first study lenses or the second study lenses? Collected at 4 weeks fore each study pair. (4 point Likert scale; very likely, likely, unlikely, very unlikely) | 4 weeks | 
| Participant Recommendation of a Study Lens to Friends, Family or Colleagues | Percentage of participants that answer the question, What study lens they will most likely recommend to friends, family or colleagues? Collected at end of study. (Forced choice; First Study Lenses, Second Study Lenses) | 8 weeks | 
| Participant Likelihood of Recommending a Study Lens to Friends, Family or Colleagues. | Percentage of participants that answer the question, How likely are they to recommend either the first pair of study lenses or the second pair of study lenses to friends, family or colleagues? Collected at study end. (4 point Likert scale; very likely, likely, unlikely, very unlikely) | 8 weeks | 
| Participant Preference for Their Habitual Lenses or Either of the Study Lenses | Percentage of participants that answer the question, Which type of study lens they prefer with regard to comfort, dryness, handling, vision, lens fit and overall performance? Collected at study end. (Forced choice; habitual lenses, first study lenses, second study lenses) | 8 weeks | 
| Participant Preference for Either of the Study Lenses | Percentage of participants that answer the question, Which type of study lens they prefer with regard to comfort, dryness, handling, vision, lens fit and overall performance? Collected at study end. (Forced choice; first study lenses, second study lenses, neither) | 8 weeks |