Table 2.
Predicted Human Nocturnal Melatonin Suppression from Incandescent and Daylight Illumination [46] of Varying Corneal Illuminances and Durations, Based on Rea et al. [37]
| Incandescent | |||
| Illuminance (lx) | Melatonin suppression after 30 minutes | Melatonin suppression after 60 minutes | Melatonin suppression after 90 minutes |
| 0.1 | 0% | 0% | 0% |
| 0.3 | 0% | 0% | 0% |
| 1 | 0% | 1% | 1% |
| 3 | 1% | 2% | 2% |
| 10 | 3% | 5% | 5% |
| 30 | 8% | 11% | 13% |
| 100 | 19% | 25% | 27% |
| 300 | 35% | 42% | 45% |
| 1000 | 54% | 59% | 60% |
| 3000 | 65% | 68% | 69% |
| Daylight | |||
| Illuminance (lx) | Melatonin suppression after 30 minutes | Melatonin suppression after 60 minutes | Melatonin suppression after 90 minutes |
| 0.1 | 0% | 0% | 0% |
| 0.3 | 0% | 0% | 1% |
| 1 | 1% | 1% | 1% |
| 3 | 2% | 3% | 4% |
| 10 | 6% | 9% | 10% |
| 30 | 14% | 19% | 20% |
| 100 | 29% | 36% | 39% |
| 300 | 47% | 53% | 55% |
| 1000 | 62% | 65% | 66% |
| 3000 | 69% | 71% | 71% |