Refractive errors in twin studies.

  title={Refractive errors in twin studies.},
  author={Mohamed Dirani and Matthew Chamberlain and Pam Garoufalis and Christine Yi-Chin Chen and Robyn H. Guymer and Paul N Baird},
  journal={Twin research and human genetics : the official journal of the International Society for Twin Studies},
  volume={9 4},
It is estimated that 1.6 billion people worldwide have myopia, a refractive error, and this number is expected to increase to approximately 2.5 billion by the year 2020. It is now well established that both the environment and genetics play a role in the development of myopia. However, the exact contribution of each of these components to myopia development has yet to be completely determined. Twin studies (classical twin model) are commonly used to determine the weighting of genetic and… CONTINUE READING