The purpose of this study is to evaluate the visual performance of DACP MF and PROCLEAR 1D MF daily disposable contact lenses in an established presbyopic population.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
70
Nelfilcon A multifocal contact lenses
Omafilcon A multifocal contact lenses
Mean Stereoacuity at Near After 5+/-1 Days of Contact Lens Wear
Stereoacuity (SA) is the ability to detect differences in distance (depth perception). Near SA was measured at a distance of 40 cm using the Howard-Dolman system. A lower SA value indicates better depth perception.
Time frame: Day 5, each product
Mean Area of Focus Under the Mean Defocus Curve After 5 +/- 1 Days of Contact Lens Wear
Visual acuity was measured with contact lenses in place using an Early Treatment Diabetic Retinopathy Study (ETDRS) high contrast logMAR chart under well-lit conditions. Trial Lenses of different spherical powers (+2.00 diopter to -5.00 diopter) were placed in front of the eyes to produce varying levels of defocus, and logMAR acuity at each defocus value was recorded. The area under the defocus curve (AUC) was calculated via the trapezoidal rule for the entire study population by treatment using a 0.3 logMAR threshold for intermediate from -2.00 D (50cm) to -0.50 D (2m) and near from -4.00 D (25cm) to -2.00 D (50cm). A higher value indicates a bigger area of focus.
Time frame: Day 5, each product
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.