The study is a bilateral, single-masked, single-arm, 4-visit dispensing study. There will be one study treatment, with the subject being dispensed lenses for 6 to 8 days, then lens power will be optimized (if necessary) and dispensed for a further 2 weeks to assess the clinical performance of investigational multifocal toric contact lenses.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
95
Stam & Associates Eye Care
Jacksonville, Florida, United States
VRC-West
Jacksonville, Florida, United States
Maitland Vision Center
Maitland, Florida, United States
Kannarr Eye Care
Pittsburg, Kansas, United States
Overall Vision
Overall vision was assessed using the Contact Lens User Experience™ (CLUE) questionnaire. CLUE is a validated patient reported outcomes (PRO) questionnaire to assess patient-experience attributes of soft contact lenses (comfort, vision, handling, and packaging) in a contact-lens wearing population in the US, ages 18-65. Derived CLUE scores using Item Response Theory (IRT) follow a normal distribution with a population average score of 60 (SD 20),where higher scores indicate a more favorable/positive response with a range of 0-120.
Time frame: 2-Week Follow-up
LogMAR Visual Acuity
Binocular visual performance on logMAR (Logarithm of Minimal Angle of Resolution) scale was evaluated at distance (4 m),intermediate (64 cm) and near (40 cm) under high luminance high contrast lighting condition using ETDRS (Early Treatment Diabetic Retinopathy Study) charts. The room illuminance was required to be between 7.3 and 7.9 EV (394-597 lux). For Distance (4 m), the acceptable range for the chart luminance was 10.5-10.7 EV (181-208 cd/m2). For Intermediate (64cm) and Near (40cm), the acceptable range for the chart luminance 10.8-11.1 EV (223-274 cd/m2). Letter by-letter results calculated the visual performance score for each chart read. A logMAR score closer to zero, or below zero, indicates a better visual acuity. A logMAR visual performance score of 0.0 is equivalent to Snellen visual acuity of 20/20. Hyperopes and myopes were combined based on historical data for subjects in this study with regard to visual performance logMAR.
Time frame: 2-Week Follow-up
Change From Baseline CLUE Vision Score
Overall vision was assessed using the Contact Lens User Experience™ (CLUE) questionnaire. CLUE is a validated patient reported outcomes (PRO) questionnaire to assess patient-experience attributes of soft contact lenses (comfort, vision, handling, and packaging) in a contact-lens wearing population in the US, ages 18-65. Derived CLUE scores using Item Response Theory (IRT) follow a normal distribution with a population average score of 60 (SD 20), where higher scores indicate a more favorable/positive response with a range of 0-120. The change from baseline was calculated as the 2 week follow-up scores minus baseline scores. Change from baseline scores range from -120 to 120, where higher change from baseline scores indicate better performance. The average change from baseline was reported.
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Birmingham Vision Care
Bloomfield Township, Michigan, United States
Eye Associates of New York
New York, New York, United States
Sacco Eye Group
Vestal, New York, United States
Tyler Eye Associates
Tyler, Texas, United States
Time frame: Up to 2-Week Follow-up
Change From Baseline CLUE Comfort Score
Overall comfort was assessed using the Contact Lens User Experience™ (CLUE) questionnaire. CLUE is a validated patient reported outcomes (PRO) questionnaire to assess patient-experience attributes of soft contact lenses (comfort, vision, handling, and packaging) in a contact-lens wearing population in the US, ages 18-65. Derived CLUE scores using Item Response Theory (IRT) follow a normal distribution with a population average score of 60 (SD 20), where higher scores indicate a more favorable/positive response with a range of 0-120. The change from baseline was calculated as the 2- week follow-up scores minus baseline scores. Change from baseline scores range from -120 to 120, where higher change from baseline scores indicate better performance. The average change from baseline was reported.
Time frame: Up to 2-Week Follow-up
Change From Baseline CLUE Handling Score
Overall handling was assessed using the Contact Lens User Experience™ (CLUE) questionnaire. CLUE is a validated patient reported outcomes (PRO) questionnaire to assess patient-experience attributes of soft contact lenses (comfort, vision, handling, and packaging) in a contact-lens wearing population in the US, ages 18- 65. Derived CLUE scores using Item Response Theory (IRT) follow a normal distribution with a population average score of 60 (SD 20), where higher scores indicate a more favorable/positive response with a range of 0-120. The change from baseline was calculated as the 2- week follow-up scores minus baseline scores. Change from baseline scores range from -120 to 120, where higher change from baseline scores indicate better performance. The average change from baseline was reported.
Time frame: Up to 2-Week Follow-up