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Oxygen permeability rates in formulated lens based on different composition ratios of TEGDMA, PEGDA 200 and PEGDA 600 (Table 2)
| Sample | Equilibrium water content, EWC (%) | Relative oxygen permeability (Dk) |
|---|---|---|
| TEGDMA | 7.3 | 2.2 |
| PEGDA 200/TEGDMA: 20/80 | 10.4 | 2.5 |
| PEGDA 600/TEGDMA: 20/80 | 13.5 | 2.8 |
| PEGDA 200/TEGDMA: 50/50 | 14.1 | 2.9 |
| PEGDA 600/TEGDMA: 50/50 | 14.6 | 2.9 |
| PEGDA 200/TEGDMA: 80/20 | 14.7 | 2.9 |
| PEGDA 600/TEGDMA: 80/20 | 15.9 | 3.1 |
| PEGDA 200/TEGDMA: 100/0 | 16.5 | 3.2 |
| PEGDA600/TEGDMA: 100/0 | 17.5 | 3.4 |
