The influence of oblique viewing on axial and peripheral refraction for emmetropes and myopes
Mathur, Ankit, Atchison, David A., Kasthurirangan, Sanjeev, Dietz, Nadine, Luong, Suzanna, Chin, Shih Pei, Lin, Wen Linda, & Hoo, Sock Whay (2009) The influence of oblique viewing on axial and peripheral refraction for emmetropes and myopes. Ophthalmic and Physiological Optics, 29(2), pp. 155-161.
Refraction may be affected by the forces of lids and extraocular muscles when eye direction and head direction are not aligned (oblique viewing) which might potentially influence past findings on peripheral refraction of the eye. We investigated the effect of oblique viewing on axial and peripheral refraction. In a first experiment, cycloplegic axial refractions were determined when subjects' heads were positioned to look straight-ahead through an open-view autorefractor and when the heads were rotated to the right or left by 30° with compensatory eye rotation (oblique viewing). Subjects were 16 young emmetropes (18–35 years), 22 young myopes (19–36 years) and 15 old emmetropes (45–60 years). In a second experiment, cycloplegic peripheral refraction measurements were taken out to ±34° horizontally from fixation while the subjects rotated their heads to match the peripheral refraction angles (eye in primary position with respect to the head) or the eyes were rotated with respect to the head (oblique viewing). Subjects were 10 emmetropes and 10 myopes. We did not find any significant changes in axial or peripheral refraction upon oblique viewing for any of the subject groups. In general for the range of horizontal angles used, it is not critical whether or not the eye is rotated with respect to the head during axial or peripheral refraction.
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|Item Type:||Journal Article|
|Keywords:||Eye turn, Head turn, myopia, oblique viewing, periphal refraction|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Optometry and Ophthalmology not elsewhere classified (111399)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) > Vision Science (111303)
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Optometry & Vision Science
|Copyright Owner:||Copyright 2009 Wiley-Blackwell Publishing Ltd.|
|Copyright Statement:||The definitive version is available on publication at www3.interscience.wiley.com|
|Deposited On:||11 Jan 2010 04:42|
|Last Modified:||01 Mar 2012 02:01|
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