This study seeks to evaluate the clinical fitting performance of a new daily disposable contact lens to an existing daily disposable contact lens.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
25
contact lens
contact lens
Visioncare Research Ltd
Farnham, Surrey, United Kingdom
Proportion of Eyes Successfully Fit
Overall lens fit acceptance was assessed by the Investigator based on lens fit alone in a 6-level scale; 0=should not be worn, 1=should not be dispensed although no immediate danger, 2=borderline but unacceptable, 3=minimal acceptable, early review, 4=not perfect but OK to dispense and 5=perfect. Lens fitting responses \>2 were considered 'successful fit' while the rest of responses were considered 'unsuccessful fit'.
Time frame: Within 20 minutes of lens insertion
Lens Fit Decentration
Lens centration was assessed in primary gaze, diffuse white light, low-medium magnification, with graticule. Lens fit decentration with respect to visible cornea was measured to nearest 0.1mm.
Time frame: Within 20 minutes of lens insertion
Lens Tightness on Cornea With Manual Digit Push Up
Lens tightness on push-up assessed by digital push-up test (gentle push of the lens upward using the lower lid) with eye in primary gaze position and observing ease of push-up and speed of return to original position. Tightness is measured on a 0%-100% continuous scale where 0%=falls from cornea without lid support, 50%=optimum and 100%=no movement.
Time frame: Within 20 minutes of lens insertion
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