Blanchard Contact Lenses has pioneered the minimalist approach to scleral lens design and fitting with the Onefit™ Scleral Lens Platform – delivering optimal oxygenation for long-term corneal health with minimal lens mass and tear lens thickness.
Hydrating comfort, crisp, clear visual acuity and superior lens stability make Onefit™ ideal for active individuals and dissatisfied soft toric lens wearers. The Onefit Scleral Lens is unique and specifically designed for corneas with a normal prolate profile, with or without astigmatism, post graft corneas, as well as irregular corneas including nipple, oval, or fruste keratoconus cases. In addition, we have the Asian design of Onefit, Onefit A, which precisely addresses the physiological nuances of the Asian eye and Onefit Sym-Toric, which is an advanced front toric design for astigmatic patients.
The Onefit Scleral Lens Platform, with a standard diameter of just 14.9mm, and the Onefit A lens with a standard diameter of 14.7mm, simplify the fitting process for a wide range of applications, and minimize both lens thickness and tear layer required to support the lens, while maximizing oxygen transmission to the cornea and stems cells. Onefit lenses are designed to vault a given topography with an optimal sag height, and is specified by the value of the base curve in millimeters of radius curvature; streamlining the fitting process and making it more user-friendly.
With a trial set composed of only 14 lenses, practitioners can fit:
- Normal prolate corneas
- Astigmatism (Onefit Sym-Toric)
- Irregular corneas
- Oblate corneas (including oblate multifocal and toric optics)
All Onefit lenses are also available in an oblate design with three Central Clearance Reduction options to satisfy the needs of your post-refractive surgery patients. Multifocal optics that deliver superior visual performance for today’s presbyopes are available in both the prolate and oblate design. An Extra Limbal Clearance design option is also available for the Onefit Scleral Lens Platform (not available with Onefit A, as the design already incorporates the Extra Limbal Clearance option.)
The Onefit A design, for the Asian eye – embraces our same minimalist approach to fitting scleral lenses, while addressing the physiological specificities of Asian eyes. Onefit A lenses need to be ordered from the Onefit A fitting set. With a smaller standard diameter and different paracentral edge geometry, a different fitting set is required to reflect with precision those distinctions.
Onefit Sym-Toric is an advanced front toric design option within the Onefit platform. It was designed to enhance patient comfort, consistency of vision performance, and to greatly simplify the practitioner fitting experience for scleral Astigmatic patients. Sym-Toric utilizes the existing Onefit Scleral Lens Platform diagnostic lens set. (No additional diagnostic fitting set is required).
Onefit Sym-Toric does not rely on the prism ballast or toricity in the haptic, as is typically used to stabilize itself on the ocular surface. While keeping the same edge elevation 360 degrees, the Onefit Sym-Toric posterior surface matches the different radii values of the cornea (similar to a corneal posterior toric lens). The lens is stable and comfortable and does not deprive the cornea of any oxygen due to excessive thickness.
Benefits provided by ALL Onefit lenses include superior comfort, stability of fit, vision that remains consistent throughout the wearing time, reduced glare and starbursts and reduced dryness. These attributes make it an ideal lens for athletes and active wearers, unhappy soft and soft toric lens wearers and intolerant corneal GP wearers. Onefit offers the crisp vision of a GP while providing the comfort of a soft lens.