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The theory and implications of the biaxial model of corneal birefringence
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Misson, Gary P. (2010) The theory and implications of the biaxial model of corneal birefringence. Ophthalmic and Physiological Optics, Vol.30 (No.6). pp. 834-846. doi:10.1111/j.1475-1313.2010.00782.x ISSN 0275-5408.
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Official URL: http://dx.doi.org/10.1111/j.1475-1313.2010.00782.x
Abstract
Purpose:
A theoretical model of biaxial optical anisotropy is derived and its structural, biomechanical and developmental implications are discussed with reference to known corneal anatomy.
Methods:
A concise review of the theory of optical crystallography is followed by the derivation of a theoretical model of the optical anisotropic properties of a dome of biaxial birefringent crystalline material. The model is then applied to parameters relevant to the biaxial model of human corneal birefringence.
Results:
Theoretical distributions of refractive indices and vibration directions for transmitted monochromatic light are derived for the central and paracentral zones of a model human cornea. Contours of equal refractive index (equirefringence curves) are found to have orthogonal confocal spheroconic geometry.
Conclusions:
A novel model of corneal structure is proposed in which discrete uniaxial positive birefringent fibre-like elements conform to the derived spheroconic geometry. Biomechanical implications and the relationship of the birefringent elements to known corneal anatomy are discussed. The crystallographic conventions are proposed as a standard for further investigations of corneal birefringence.
Item Type: | Journal Article | ||||
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Subjects: | R Medicine > RE Ophthalmology | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | Ophthalmic and Physiological Optics | ||||
Publisher: | Wiley-Blackwell Publishing, Inc. | ||||
ISSN: | 0275-5408 | ||||
Official Date: | November 2010 | ||||
Dates: |
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Volume: | Vol.30 | ||||
Number: | No.6 | ||||
Number of Pages: | 13 | ||||
Page Range: | pp. 834-846 | ||||
DOI: | 10.1111/j.1475-1313.2010.00782.x | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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