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Evonik provides an extensive portfolio of high‑performance Specialty Methacrylates engineered to improve the comfort and functional properties of soft contact lenses.
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March 02, 2026

The 24th China (Shanghai) International Optics Fair (SIOF)

We’re excited to announce our participation in the 24th China (Shanghai) International Optics Fair, taking place from March 2–4, 2026, at the Shanghai New International Expo Centre. Join us to explore our VISIOMER® Specialty Methacrylates portfolio dedicated to hydrogel and silicon hydrogel soft contact lenses.

Our monomers are engineered to support lens manufacturers in achieving the optimal balance of comfort, clarity, mechanical stability, and oxygen permeability—all essential for today’s demanding visioncare applications. We look forward to connecting with industry partners, formulators, and vision‑care specialists.

Why VISIOMER® for Hydrogels and Silicon Hydrogels?

VISIOMER® Terra Opti GMMA is partially bio‑based methacrylate (43% certified bio‑carbon) that enhances:

  • Flexibility and softness of hydrogel lenses
  • Reduced shrinkage during polymerization
  • Improved water permeability
  • A more sustainable formulation profile without compromising performance

VISIOMER® UHP-HEMA is an ultra‑high‑purity hydroxy methacrylate designed specifically for medical and optical applications.

The product provides:

  • Excellent dimensional stability
  • High oxygen permeability
  • Superior water uptake for long‑wear comfort
  • Consistent polymerization behavior due to extremely low impurity levels

VISIOMER® EGDMA SG is an ultra‑high‑purity dimethacrylate designed to precisely adjust the mechanical performance of hydrogel soft contact lenses:

  • Improved water uptake
  • Improved oxygen permeability
  • Flexibility of hydrogel lenses

Learn how VISIOMER® Specialty Methacrylates integrate performance and eco‑conscious chemistry into hydrogel lens design—offering a meaningful step toward more sustainable materials in the vision‑care industry.