Myopia can be corrected with artificial lenses or surgery and is generally regarded as a benign disorder. However, as myopia is also associated with more severe conditions such as cataracts and glaucoma, a change in the prevalence of myopia (proportion of the population with myopia) may be a public health concern. The graph shows the change in the prevalence of myopia in three major ethnic groups in Singapore at three points in time.
Source: Adapted from Morgan, I.G., Ohno-Matsui, K., and Saw, S. M. (2012). Myopia. Lancet, 379: 1739-1748.
-Public health scientists conclude that the change in myopia prevalence is a result of environmental and not genetic factors. Does the graph support this conclusion?

Question

Myopia can be corrected with artificial lenses or surgery and is generally regarded as a benign disorder. However, as myopia is also associated with more severe conditions such as cataracts and glaucoma, a change in the prevalence of myopia (proportion of the population with myopia) may be a public health concern. The graph shows the change in the prevalence of myopia in three major ethnic groups in Singapore at three points in time.
  Source: Adapted from Morgan, I.G., Ohno-Matsui, K., and Saw, S. M. (2012). Myopia. Lancet, 379: 1739-1748.
-Public health scientists conclude that the change in myopia prevalence is a result of environmental and not genetic factors. Does the graph support this conclusion?

Quizplus · Accepted Answer

The graph likely shows a similar pattern of rapid increases in myopia prevalence across different ethnic groups over time, suggesting that these changes are influenced by environmental factors common to all groups, rather than genetic factors that would vary between ethnicities.

Myopia Can Be Corrected with Artificial Lenses or Surgery and Is