Performance of a Monthly, Reusable, Soft Contact Lens in Participants Who Previously Dropped Out of Contact Lenses
摘要
To refit contact lens (CL) dropouts who dropped out of CLs because of dryness or discomfort into lehfilcon A (TOTAL30®) monthly, spherical CLs to determine the frequency that they can be comfortably refitted into CLs.
MethodsA 6-month, four-visit, multi-centre, open-label, single-arm, six-site study was conducted in the United States. Adults, 18- to 40-year-old, past CL wearers who dropped out of reusable CLs at least 3 months but not more than 2 years ago because of discomfort or dryness were enrolled. Participants were required to have no significant dry eye symptoms (SPEED scores ≤3). All participants were then fitted into lehfilcon A CLs. The participants were evaluated with the SPEED, a comfort visual analogue scale (VAS; 0–100 scale) and a Likert questionnaire.
ResultsThis study enrolled 61 participants who had a median (interquartile) age of 28 (7) years (78.7% female). The participants had a right eye median (IQR) refractive error (sphere/cylinder power) of −1.50 D (2.50 D)/−0.50 D (0.50 D). This study had a CL retention rate of 98.4% at 1 month and 65.6% at 6 months. The VAS yielded a median comfort score of 81 (40) at 6 months. The Likert questionnaire found that 80.7% of participants would recommend the CLs to a friend at 6 months. SPEED scores increased statistically after resuming CL wear (p = 0.0001) at 1 month, yet this symptom change was unlikely to be clinically meaningful.
ConclusionsThis study found that previous CL wearers who had dropped out of CLs could be comfortably refitted with lehfilcon A monthly replacement, silicone hydrogel CLs, with most of them continuing to wear the CLs after 6 months of daily wear. The results suggest that the monthly soft CLs with water gradient technology can be a viable option for many CL dropout sufferers.