What is Balafilcon A?
What is Balafilcon A? Balafilcon A is a homogeneous combination of a TRIS monomer derivative that's copolymerized with the hydrophilic hydrogel monomer N-vinyl pyrrolidone (NVP). The molecular strategy with this combination is the synthesis of a TRIS-like structure with polar groups to make it hydrophilic. What is Omafilcon A? Omafilcon A is a 62% water content material composed of 2-hydroxyethylmethacrylate (HEMA) and 2-methacryloyloxyethyl phosphorylcholine (PC) polymers crosslinked with ethyleneglycol dimethacrylate. Therefore, they attract and surround themselves with water molecules. Is Lotrafilcon a silicone hydrogel? Two commonly used BCLs are Lotrafilcon B and Balafilcon A. These silicone hydrogel contact lenses have...