Table 1.
Characteristics of Silicone hydrogel lenses used in study and comparison with other commonly available Silicone hydrogel lenses.
| Material | Comfilcon A | Senofilcon A | Lotrafilcon A | Lotrafilcon B | Balafilcon A | Galyfilcon A |
|---|---|---|---|---|---|---|
| Proprietary name | Biofinity | Acuvue OASYS | Night & Day | O2 Optix/Air Optix | PureVision | Acuvue Advance |
| Manufacturer | CooperVision | Johnson & Johnson | CIBA Vision | CIBA Vision | Bausch & Lomb | Johnson & Johnson |
| Water content | 48% | 38% | 24% | 33% | 36% | 47% |
| Dk | 128 | 103 | 140 | 110 | 91 | 60 |
| Dk/t | 160 | 147 | 175 | 138 | 101 | 86 |
| Surface treatment | None | None (internal wetting agent) | Plasma Coating | Plasma Coating | Plasma Oxidation | None (internal wetting agent) |
| Modulus (Mpa) | 0.8 | 0.72 | 1.5 | 1.0 | 1.1 | 0.43 |
Dk: Oxygen permeability (×10−11); Dk/t: oxygen transmissibility (×10−9).