Astigmatism and its role in emmetropization

Research output: Journal article publicationJournal articleAcademic researchpeer-review

27 Citations (Scopus)


Astigmatism is a common refractive error caused by the difference in refractive power of the eye along different meridians. This causes two line foci that cannot be corrected by changing viewing distance or accommodation. Although human studies have ascribed astigmatism to multiple factors, its cause remains unclear. Studies in chicks and monkeys suggest that imposed astigmatic error may alter emmetropization, but McLean and Wallman (2003) showed that the early compensatory response to spherical defocus was not affected by concurrent high astigmatism in chicks. This review will focus on possible mechanisms leading to astigmatism and the influence of astigmatism on emmetropization in animal studies.
Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalExperimental Eye Research
Publication statusPublished - 1 Sept 2013


  • Astigmatism
  • Emmetropization
  • Refractive error development

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience


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