Refractive index distribution and optical properties of the isolated humna lens measured using magnetic resonance imaging (MRI)

Jones, Catherine E., Atchison, David A., Meder, Roger, & Pope, James M. (2005) Refractive index distribution and optical properties of the isolated humna lens measured using magnetic resonance imaging (MRI). Vision Research, 45(18), pp. 2352-2366.

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Abstract

Using a non-invasive MRI technique for measuring the refractive index distribution through the crystalline lens, refractive index maps were obtained through 20 intact isolated human lenses (7–82 years). Focal length measurements, obtained by simulated light ray propagation through each index map were found to be in agreement with direct measurements performed on a scanning laser apparatus. With increasing age, the refractive index profiles became flatter in the central region, accompanied by steepening of the profile in the periphery. This appears to be an important mechanism underlying the observed changes in power and longitudinal aberration of the human lens.

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ID Code: 5473
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: d.atchison@qut.edu.au
Keywords: Eye lens, Lens optics, Refractive index distribution, Gradient index, Magnetic resonance imaging
DOI: 10.1016/j.visres.2005.03.008
ISSN: 0042-6989
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2005 Elsevier
Deposited On: 20 Nov 2006 00:00
Last Modified: 29 Feb 2012 13:15

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