Table 2.
Average Levels of PM2.5 by Visual Impairment or Eye Disease (N = 29,147)
| Variable* | Fine Particulate Matter (µg/m3) Mean (SD) | P |
|---|---|---|
| Visual impairment | ||
| No (n = 26,655) | 6.5 (1.8) | |
| Yes (n = 2,067) | 6.5 (2.0) | 0.780 |
| Glaucoma | ||
| No (n = 27,525) | 6.5 (1.8) | |
| Yes (n = 1,467) | 6.7 (2.0) | <0.001 |
| Age-related macular degeneration | ||
| No (n = 27,715) | 6.5 (1.8) | |
| Yes but not visually impaired (n = 948) | 6.6 (1.9) | 0.014 |
| Yes and visually impaired (n = 237) | 6.8 (2.2) | 0.011 |
| Cataract | ||
| No (n = 20,264) | 6.5 (1.7) | |
| Yes (n = 8,286) | 6.6 (2.0) | <0.001 |
*
Note that 425 were missing data on visual impairment, 155 were missing data on glaucoma, 247 were missing data on AMD, and 597 were missing data on cataract.