@inbook{1158758415, author={Kim E. Barrett and Susan M. Barman and Heddwen L. Brooks and Jason X.-J. Yuan}, title={Vision}, booktitle={Ganong's Review of Medical Physiology, 26e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accesspharmacy.mhmedical.com/content.aspx?aid=1158758415} }