Light environment

Survey and analysis of visual acuity of Kazakhs in different lighting environments

C. W. Zhang, Xu, J. H., Wang, Y. L., Xu, W., and Li, K., Survey and analysis of visual acuity of Kazakhs in different lighting environments, vol. 13, pp. 2451-2457, 2014.

The effect of different lighting environments on the vision and refractive error were investigated in 427 Kazakhs (828 eyes) aged from 40 to 60 years old, of which 279 were pastoral (546 eyes) and 148 were urban (282 eyes). Pastoral Kazakhs use natural illumination, whereas city Kazakhs mainly use artificial illumination. Of all cases, 19.1% (54 cases) had a vision of 0.4 to 0.5, 20.9% (59 cases) had 0.6 to 0.8, and 17.7% (50 cases) had above 1.0.

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