Cox, Michael J.2011-02-022011-02-022010Cox, M. J. (2010). Visual Optics: Astigmatism. In: Hodges, R. and Dartt, D. (Eds.). Encyclopaedia of the Eye. Oxford: Elsevier. Chapter 239, pp. 135-145.http://hdl.handle.net/10454/4765NoenHigher Order Ocular AberrationsAstigmatismPeripheral Retinal Image QualityBook chapterEncyclopaedia of the Eye