Short-Term Fit Assessment of a Novel Daily Disposable, Toric, Silicone Hydrogel Contact Lens

• Published in: Clinical ophthalmology (Auckland, N.Z.) Vol. 16; pp. 3721 - 3730
• Main Authors: Gustafson, Britt, Whaley, Susan, Giedd, Bradley, Montaquila, Stephen, Edwards, Brenda, Subbaraman, Lakshman N
• Format: Journal Article
• Language: English
• Published: Auckland Dove Medical Press Limited 30.11.2022; Taylor & Francis Ltd; Dove; Dove Medical Press
• Subjects: Analysis; Astigmatism; Clinical Trial Report; Contact lenses; easy to fit; Hydrogels; orientation; settling time; Silicones; surface technology; verofilcon a; United States > US
• ISSN: 1177-5483; 1177-5467; 1177-5483
• DOI: 10.2147/OPTH.S370151

Purpose: The development of new contact lens materials and designs are necessary to minimise patient dropout. A lens material with water surface technology was recently developed to incorporate toric design. The on-eye stability of a toric contact lens is critical to a successful toric lens fitting. In an effort to establish if the new daily disposable verofilcon A toric silicone hydrogel lens provides fast stability for ease of fit, this study assessed the initial and short-term on-eye stability of this new lens. Patients and Methods: Habitual full-time wearers of soft contact lenses, aged 18 or over, were enrolled and fit with the verofilcon A toric lens. Study endpoints included lens settling time, axis orientation at specific time-points within 10 minutes after insertion, lens oscillation with blink, lens movement and centration, and scribe mark visibility. Results: Thirty-nine subjects completed the study; 67% were female and mean age was 34.1 [+ or -] 10.8 years (range 18 to 61). The majority of verofilcon A toric lenses (98.7%) settled on average within 60 seconds. Average lens orientation was 3[degrees] from six o'clock position within two minutes of insertion. The lenses showed minimal oscillation with blink; 98.7% of the eyes demonstrated [less than or equal to] 5[degrees] oscillation with blink. All lenses showed optimal/acceptable lens movement and centration and the scribe mark was reported as easily visible in 96% of eyes. Practitioners reported a 99% first lens fit success rate. Conclusion: The novel verofilcon A toric lens was highly successful with the first lens, had excellent on-eye stability and good fit characteristics. These qualities make this new lens a good option for lens wearers. Furthermore, it fulfills the needs of practitioners who want a toric lens that is easy and predictable to fit. Keywords: verofilcon A, easy to fit, settling time, orientation, surface technology