This was a prospective, crossover, bilateral daily wear, and subject masked dispensing study. The habitual contact lenses were not optimized. There was no randomization of the study lenses, participants wore the control lenses for the first wear period and the test for the second wear period. Participants wore each study lens for 3-7 days and then attend a prescription optimization visit. After this optimization visit, they wore each study lens for a 2-week period. During the 2-week wear period, participants recorded their subjective lens-wear experience remotely.
The objective of the study was to adapt existing multifocal soft lens wearers to a CONTROL lens for 2 weeks and then evaluate the success of switching them to the TEST lens, with a review after 2 weeks.