A Genetic Marker for Nearsightedness?

Studying twins is a helpful way to learn about genetic vs. environmental factors in any given health condition, and in Australia, there are large twin studies being done in the states of Tasmania, Victoria, and Queensland. Their goal is to identify the genes underlying common eye diseases such as glaucoma and myopia. One group, headed by Dr. David Mackey and Dr. Gu Zhu, is investigating the