Table 3 FDA-approved silicon contact lenses and their properties
From: Extended levobunolol release from Eudragit nanoparticle-laden contact lenses for glaucoma therapy
Commercial contact lens | Iconnect | Slip-on | Optima 38 | Acuvue Moist | Softlens |
|---|---|---|---|---|---|
Manufacturer | Bausch & Lomb | Aqualens | Baush & Lomb | Johnson & Johnson | Bausch & Lomb |
Hydrogel material | Hilafilcon B | Omafilcon A | Polymacon | Etafilcon A | Hilafilcon B |
Percentage of water content | 48 | 58 | 38.6 | 58 | 56 |
Oxygen transmissibility | 10 | 28–36.7 | 8.5–24.3 | 23.8–28 | 22 |
FDA group | II | II | III | IV | II |
Water content | High | High | Low | High | High |
Non-ionic | Non-ionic | Ionic | Ionic | Non-ionic |