APA (7th ed.) Citation

Khairallah, M., & Jonas, J. B. (2015). Number of people blind or visually impaired by cataract worldwide and in world regions, 1990 to 2010. Investigative ophthalmology & visual science, 56(11), . https://doi.org/10.1167/iovs.15-17201

Chicago Style (17th ed.) Citation

Khairallah, Moncef, and Jost B. Jonas. "Number of People Blind or Visually Impaired by Cataract Worldwide and in World Regions, 1990 to 2010." Investigative Ophthalmology & Visual Science 56, no. 11 (2015). https://doi.org/10.1167/iovs.15-17201.

MLA (9th ed.) Citation

Khairallah, Moncef, and Jost B. Jonas. "Number of People Blind or Visually Impaired by Cataract Worldwide and in World Regions, 1990 to 2010." Investigative Ophthalmology & Visual Science, vol. 56, no. 11, 2015, https://doi.org/10.1167/iovs.15-17201.