The purpose of this study was to assess and compare the effect of the repeated usage of 2 different care systems (one hydrogen peroxide based cleaning and disinfecting system and one PHMB containing multipurpose system) with ACUVUE® 2® and AIR OPTIX® AQUA contact lenses worn on a daily wear basis for a 3-month period.
This study was divided into 2 periods, a Screening Phase and an Investigational Phase. During the Screening Phase, subjects were fitted and dispensed with either ACUVUE® 2® (for current hydrogel wearers) or AIR OPTIX® AQUA (for current silicone hydrogel wearers) contact lenses and used COMPLETE® MPS Easy Rub® Formula to clean and disinfect their lenses. At the completion of the Screening Phase, the symptomatic status of the subjects was re-assessed. Those subjects who qualified proceeded to the Investigational Phase and were dispensed with new pair of study contact lenses identical to the lenses they wore during the Screening Phase to use in conjunction with the allocated study care product, CLEAR CARE® /AOSEPT® Plus or ReNu MultiPlus®.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
SINGLE
Enrollment
100
Hydrogen peroxide-based cleaning and disinfection system
Polyaminopropyl biguanide (PHMB) preserved multipurpose solution
Hydrogel contact lenses worn on a daily wear basis for 14 days (Screening Phase) and 3 months (Investigational Phase). During the Investigational Phase, the contact lenses lenses were worn a minimum of six hours per day, 5 days per week, with a fresh pair dispensed every 2 weeks.
Maximum Papillae
Eyelid papillae (bumps on the inner eyelid) were recorded separately for three zones of the upper lid and overall for the lower lid on a 5-point forced choice scale: 0 = None; 1 = Slight (diffuse papillae); 2 = Mild (diffuse \& tufts papillae); 3 = Moderate (moderate \& tufts papillae); 4 = Severe (giant papillae). The maximum value represents the worse grade in any zone. Both eyes were included in the model for analysis. Contact lenses were not worn for this assessment.
Time frame: Baseline (Day 0), Month 3
Maximum Eyelid Hyperaemia
Eyelid hyperaemia (redness) was recorded separately for three zones of the upper lid and overall for the lower lid on a 5-point forced choice scale: 0 = Clear; 1 = Slight redness; 2 = Mild redness; 3 = Moderate redness; 4 = Severe redness). The maximum value represents the worst grade in any zone. Both eyes were included in the model for analysis. Contact lenses were not worn for this assessment.
Time frame: Baseline (Day 0), Month 3
Mean Upper Eyelid Redness
The contact lenses were removed and upper eyelid redness was objectively measured through digital images. The coverage of the palpebral surface by blood vessels is expressed as percentage of the total surface measured. Both eyes were included in the model for analysis. Contact lenses were not worn for this assessment.
Time frame: Baseline (Day 0), Month 3
Mean Upper Eyelid Margin Staining
The contact lens was removed and ophthalmic dye was instilled. Upper eyelid margin staining was objectively measured through digital images. The extent of true staining (i.e., the total area of lid margin covered by staining) was recorded. Both eyes were included in the model for analysis. Contact lenses were not worn for this assessment.
Time frame: Baseline (Day 0), Month 3
Median Non-Invasive Pre-Lens Tear Film Break Up Time (PL-NIBUT)
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Silicone hydrogel contact lenses worn on a daily wear basis for 30 days (Screening Phase) and 3 months (Investigational Phase). During the Investigational Phase, the contact lenses lenses were worn a minimum of six hours per day, 5 days per week, with a fresh pair dispensed monthly.
PHMB 0.0001% and poloxamer 0.05% multipurpose solution
The pre-lens tear film is the layer of tears located on top of the contact lens (i.e., between the eyelid and the contact lens). The time required for a dry spot to appear on the pre-lens surface after blinking is referred to as the pre-lens tear film break up time. PL-NIBUT was evaluated using a biomicroscope with a diffuse illumination source, i.e., Tearscope. A longer PL-NIBUT indicates a more stable tear film and greater on-eye lens wettability. Three PL-NIBUT measurements were recorded, and the median value was used for analysis. Both eyes were included in the model for analysis. Contact lenses were on-eye for this assessment.
Time frame: Month 3