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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. 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 |
|---|---|
| Subjects: | R Medicine > RE Ophthalmology |
| Divisions: | Faculty of Science > Engineering |
| Journal or Publication Title: | Ophthalmic and Physiological Optics |
| Publisher: | Wiley-Blackwell Publishing, Inc. |
| ISSN: | 0275-5408 |
| Date: | November 2010 |
| Volume: | Vol.30 |
| Number: | No.6 |
| Number of Pages: | 13 |
| Page Range: | pp. 834-846 |
| Identification Number: | 10.1111/j.1475-1313.2010.00782.x |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/4963 |
Data sourced from Thomson Reuters' Web of Knowledge
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