Material
Cross-linked polyvinyl alcohol forms the bulk of the lens, with additional non-crosslinked polyvinyl alcohol floating freely in the lens matrix.
Wetting agent
Hydroxypropyl methylcellulose, polyethylene glycol (PEG) and polyvinyl alcohol (PVA), the free polyvinyl alcohol being released from the lens at each blink.
Base curve
Base curve optimization is influenced by lens diameter, modulus and other material characteristics.
