A comparison of the silicone hydrogel lens Biofinity and its 10 years older sibling Proclear. Both lenses are monthly replaceable contact lenses manufactured by CooperVision. While Biofinity is a silicone hydrogel lens rolled-out in 2007, Proclear was introduced in 1997 with its base material being a non-ionic hydrogel. In more detail, it is composed of a polymer of 2-hydroxy-ethylmethacrylate and 2-metacryloloyoxyethyl phosphorylcholine which is cross-linked with ethylene glycol dimethacrylate.
Biofinity provides a much higher oxygen transmissibility value due to its unique silicone hydrogel material which translates into better breathability. In fact, Biofinity's Dk/t value is one of the highest Dk/t values we have seen in any silicone hydrogel lens in the market. To keep the lens and eye moist, Proclear was implemented with a Phosphorylcholine-based technolgoy called PC Technology, while Biofinity utilizes a new technology called Aquaform to overcome the hydrophobic nature of its base material.
In looking at various online retail sources, we calculated the cost-per-day of both lenses to be very similar. While Proclear must be removed overnight, Biofinity is approved for extended wear up to 6 consecutive nights. Both lenses are tinted blue from edge to edge for visibility purposes.
Biofinity versus Proclear: Specs Compared
Biofinity outshines Proclear on many of the crucial parameters that are indicators for good breathability, handling and end-of-day comfort. After all, Biofinity is a silicone hydrogel lens with one of the best Dk/t values that you can get today. Some contact lens wearers might still prefer Proclear as not everyone's eyes cope well with the silicone material.