There will be four study lenses tested; one marketed lens, and three prototype study lenses. Subjects will be randomized to one of the four study lenses which will be worn in a daily wear modality, with a two week replacement.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
80
worn in a daily wear modality; lenses will be replaced after 2 weeks
worn in a daily wear modality; lenses will be replaced after 2 weeks
worn in a daily wear modality; lenses will be replaced after 2 weeks
Unnamed facility
Chennai, Tamil Nadu, India
Corneal Staining (Area)
Corneal Staining Area was collected at baseline and 4- week evaluations in both eyes using a slit lamp and was graded with a 11-point scale (i.e. Grade 0= 0% of region covered, Grade 1 =10% of region covered, Grade 2 = 20% of region covered, Grade 3 = 30% of region covered, Grade 4= 40% of region covered, Grade 5 = 50% of region covered, Grade 6 = 60% of region covered,Grade 7 = 70% of region covered, Grade 8 = 80% of region covered, Grade 9 = 90% of region covered and Grade 10 = 100% of region covered). Central, interior, nasal, temporal and superior locations were evaluated. The average grade for each lens and time point was reported.
Time frame: Baseline and 4-Week Follow-up
Corneal Staining (Depth)
Corneal Staining Depth was collected at baseline and 4- week evaluations in both eyes using a slit lamp and was graded with a 4-point scale (i.e. Grade 0= None, Grade 1 =Superficial epithelial, Grade 2 = Full epithelial, Grade 3 =stromal glow). Central, interior, nasal, temporal and superior locations were evaluated. The average grade for each lens and time point was reported.
Time frame: Baseline and 4-Week Follow-up
Corneal Staining (Type)
Corneal Staining was collected at baseline and 4- week evaluations in both eyes using a slit lamp and was graded with a 5-point scale (i.e. Grade 0= None, Grade 1 =Micropunctate, Grade 2 = Macropunctate, Grade 3 = Coalesced Macropunctate and Grade 4 = Patch (greater or equal to 1mm). Central, interior, nasal, temporal and superior locations were evaluated. The average grade for each lens and time point was reported.
Time frame: Baseline and 4-Week Follow-up
Limbal Conjunctival Redness
Limbal Conjunctival Redness was assessed for each subject and eye at baseline and 2-week follow-up evaluations. Limbal Redness was assessed in 4 regions Inferior, Nasal, Temporal and Superior and Graded using an Efron Grading scale for limbal redness in 0.5 unit increments (Grade 0:None, Grade 1:Trace, Grade 2: Mild, Grade 3: Moderate and Grade 4: Severe). The average Grade across all four regions can range from 0 to 16 where lower values indicate better performance. The average Grade for each individual region can range from 0 to 4. The average grade across all regions was reported for each lens and time point.
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worn in a daily wear modality; lenses will be replaced after 2 weeks
Time frame: Baseline and 2-Week Follow-up
Bulbar Conjunctival Redness
Bulbar Conjunctival Redness was assessed for each subject and eye at baseline and 2-week follow-up evaluations. Bulbar Redness was assessed in 4 regions Inferior, Nasal, Temporal and Superior and Graded using an Efron Grading scale for bulbar redness in 0.5 unit increments (Grade 0:None, Grade 1:Trace, Grade 2: Mild, Grade 3: Moderate and Grade 4: Severe). The average Grade across all four regions can range from 0 to 16 where lower values indicate better performance. The average Grade for each individual region can range from 0 to 4. The average grade across all regions was reported for each lens and time point.
Time frame: Baseline and 2-Week Follow-up
Visual Acuity (LogMAR)
Visual Acuity (LogMAR) was assessed bionocularly at the 4-week follow-up evaluations. The average visual acuity (LogMAR) for each lens was reported.
Time frame: 4-Week Follow-up
Lens Fitting Characteristics
Lens fit was assessed for each subject eye at post lens fitting and 4- week follow-up evaluations. Lens fit is a binary response as acceptable or unacceptable lens fit. The percentage of eyes with acceptable lens fit was reported.
Time frame: Post Lens Fitting and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Burning/Stinging)
The Ocular symptom Burning/Stinging was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Corneal Edema
Corneal Edema was assessed using a bio-microscope at baseline and 4- week evaluations in both eyes and was graded with a 5-point scale (Grade 0= None, Grade 1 = trace, Grade 2 = Mild, Grade 3 = moderate and Grade 4 = severe). The Percentage of eyes with Grade 3 or higher was reported.
Time frame: Baseline and 4-Week Follow-up
Conjunctival Injection
Conjunctival Injection was assessed using a bio-microscope at baseline and 4- week evaluations in both eyes and was graded with a 5-point scale (Grade 0= None, Grade 1 = trace, Grade 2 = Mild, Grade 3 = moderate and Grade 4 = severe). The Percentage of eyes with Grade 3 or higher was reported.
Time frame: Baseline and 4-Week Follow-up
Corneal Neovascularization
Corneal Neovascularization was assessed using a bio-microscope at baseline and 4- week evaluations in both eyes and was graded with a 5-point scale (Grade 0= None, Grade 1 = trace, Grade 2 = Mild, Grade 3 = moderate and Grade 4 = severe). The Percentage of eyes with Grade 3 or higher was reported.
Time frame: Baseline and 4-Week Follow-up
Corneal Staining
Corneal Staining was assessed using a bio-microscope at baseline and 4- week evaluations in both eyes and was graded with a 5-point scale (Grade 0= None, Grade 1 = trace, Grade 2 = Mild, Grade 3 = moderate and Grade 4 = severe). The Percentage of eyes with Grade 3 or higher was reported.
Time frame: Baseline and 4-Week Follow-up
Tarsal Abnormalities
Tarsal abnormalities were assessed using a biomicroscope at baseline, post lens fitting, 1-, 2- and 4- week evaluations in both eyes and was graded with a 5-point scale (Grade 0, 1, 2, 3 and 4) with grade 0 represents the absence of abnormalities and 1 to 4 representing successively worse abnormalities (i.e. Grade 0= None, Grade 1 = trace, Grade 2 = Mild, Grade 3 = moderate and Grade 4 = severe). The percentage of eyes with Grade 3 or higher was reported.
Time frame: 1-, 2- and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Cloudy/Blurry/Hazy)
The Ocular symptom Cloudy/Blurry/Hazy was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Dryness)
The Ocular symptom Dryness was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Grittiness/Foreign Body Sensation)
The Ocular symptom Grittiness/Foreign Body Sensation was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Irritation/Discomfort)
The Ocular symptom Irritation/Discomfort was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Itchiness/Scratchiness)
The Ocular symptom Itchiness/Scratchiness was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Lens Awareness)
The Ocular symptom Lens awareness was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Redness)
The Ocular symptom Redness wasassessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up
Percentage of Reported Ocular Symptoms (Variable Vision)
The Ocular symptom Variable Vision was assessed by an individual item on a questionnaire and are subject reported, using the response scale of (N/A or Not recorded, Mild and rarely interferes with wear, Moderate and/or occasionally interferes with wear and Severe and/or frequently interferes with wear. The percentage of Moderate or severe symptoms were reported for the initial visit as well as the 1 month follow-up.
Time frame: Baseline and 4-Week Follow-up