Product Introduction The BOSTON™ Envision is a Rigid Gas Permeable (RGP) contact lens featuring a patented geometric design. Unlike standard RGPs that rely solely on material properties, Envision utilizes a unique back-surface multi-curve design to align perfectly with the cornea. This design significantly enhances lens stability and centration on the eye, providing users with a more refined and sharper visual experience—making it ideal for professionals who demand the highest visual quality.
Core Technology & Benefits
Patented BVP (Bi-Variable Posterior) Design: The heart of the Envision lens, this technology mimics the natural shape of the cornea. By varying the curvature across the back surface, it achieves a more even pressure distribution, which enhances stability and improves initial comfort upon insertion.
Superior Astigmatism Control: Thanks to its precise centration, the lens utilizes the ''tear lens'' effect to effectively correct moderate to high levels of corneal astigmatism. This eliminates the visual fluctuations and blurring often associated with soft toric lenses.
High Oxygen Permeability: Utilizing classic BOSTON™ fluoro-silicone acrylate materials, the lens ensures a continuous flow of oxygen to the cornea. This maintains long-term physiological health and prevents complications related to hypoxia (oxygen deprivation).
Ultra-Smooth Surface Finish: The lens surface undergoes a high-precision polishing process to minimize the adhesion of lipids and proteins. This ensures the lens remains clear and provides high-contrast vision throughout its intended lifespan.
Common Questions
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