Table 1.
Material properties of lenses used in this study
| Commercial name | 1-Day Acuvue Moist | 1-Day Acuvue TruEye | Biomedics 1 Day | Proclear 1 Day | Dailies Total One | Focus Dailies | Focus Dailies Progressive | Biofinity Multifocal | Proclear 1 Day Multifocal | Proclear Multifocal |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Johnson & Johnson | Johnson & Johnson | CooperVision | CooperVision | Alcon | Alcon | Alcon | CooperVision | CooperVision | CooperVision |
| US adopted name | Etafilcon A | Narafilcon A | Ocufilcon B | Omafilcon A | Delefilcon A | Nelfilcon A | Nelfilcon A | Comfilcon A | Omafilcon A | Omafilcon B |
| Water content (%) | 58 | 46 | 58 | 60 | 33 (>80 at surface) | 69 | 69 | 48 | 60 | 62 |
| Center thickness at −3.00 D (mm) | 0.084 | 0.085 | 0.07 | 0.09 | 0.09 | 0.10 | 0.11 | 0.08 | 0.09 | 0.16 |
| Oxygen permeability (×10−11) | 17 | 100 | 13 | 18 | 140 | 26 | 26 | 128 | 18 | 20 |
| Oxygen transmissibility (×10−9) | 20 | 118 | 19 | 20 | 156 | 26 | 24 | 160 | 20 | 12 |
| FDA group | IV | V | IV | II | V | II | II | V | II | II |
| Principle monomers | HEMA + MA + PVP | mPDMS + DMA + HEMA + TEGDMA + PVP | HEMA + MA | HEMA + PC | Unpublished | PVA | PVA | FM0411M + HOB + IBM + M3U + NVP + TAIC + VMA | HEMA + PC | HEMA + PC |
| Multifocal design | – | – | – | – | – | – | Progressive center near/distance surround | D and N lenses, spherical central and surround zones and progressive intermediate between | Aspherical, center near, distance surround | D and N lenses, spherical central and surround zones and progressive intermediate between |
| Replacement frequency | Daily | Daily | Daily | Daily | Daily | Daily | Daily | Monthly | Daily | Monthly |
Notes: For non-silicone hydrogels, oxygen permeability and transmissibility are calculated from the published water content and thickness values. For silicone hydrogels, values are reported from the manufacturer.44
Abbreviations: DMA, N,N-dimethylacrylamide; FDA, US Food and Drug administration; FM0411M, α-methacryloyloxyethyl iminocarboxyethyloxypropyl-poly(dimethylsiloxy)-butyldimethylsilane; HEMA, poly-2-hydroxyethyl methacrylate; HOB, 2-hydroxybutyl methacrylate; IBM, isobornyl methacrylate; M3U, αω-bis(methacryloyloxyethylimin ocarboxy ethyloxypropyl)-poly(dimethylsiloxane)-poly(trifluoropropylmethylsiloxane)-poly(ω-methoxy-poly(ethyleneglycol)propyl methylsiloxane); MA, methacrylic acid; mPDMS, monofunctional polydimethylsiloxane; NVP, N-vinylpyrrolidone; PC, phosphorylcholine; PVA, polyvinyl alcohol partially acetalized with N-(formylmethyl)acrylamide; PVP, polyvinylpyrrolidone; TAIC, 1,3,5-Triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione; TEGDMA, tetraethyleneglycol dimethacrylate; VMA, N-Vinyl-N-methylacetamide.