Changes in visible light transmission across the corneal stroma:
Abstract
The light scattering properties of the corneal stroma outside of the central region do not appear to have been studied in the literature. This is curious given variations in ultrastructure which are known to occur as a function of position in the central and peripheral cornea. Human and bovine corneas with limiting cell layers removed were equilibriated by dialysis close to physiological hydration. Spectral transmittance was then measured in the 400-700nm wavelength range. Readings were taken at 1mm intervals radiating out from the corneal centre, in one meridional plane. Results show transmittance gradually decreasing within the central 4mm portion of the cornea, which were modelled by the known tissue thickness increase. Outside this region an extra contributory term to extinction is observed; we briefly investigate possible ultrastructural contributors to this.
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In both cows and humans, the highest transmission in the pre-pupillary cornea is slightly displaced from the optical centre.
“Interestingly, in both cows and humans, the highest transmission in the pre-pupillary cornea is slightly displaced from the optical centre, but the functional reason for this is not known (Doutch et al., 2007).”
From Corneal structure and transparency (2015) · cites this paper as Doutch et al., 2007
Within the visible spectrum, transmittance decreases outside the central 4 mm pre-pupillary cornea.
“Using spectrophotometry we showed that, within the visible spectrum, transmittance decreases outside the central 4 mm pre-pupillary cornea (Doutch et al., 2007).”
From Corneal structure and transparency (2015) · cites this paper as Doutch et al., 2007
Cited by
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Corneal structure and transparency
Meek, K. M., & Knupp, C. (2015) · Progress in Retinal and Eye Research · doi:10.1016/j.preteyeres.2015.07.001 · Cited by 853 · see citing works
Self-citation
- Authors
- Doutch, J., Quantock, A. J., & Meek, K. M.
- Affiliations
- Cardiff University (GB)
- Venue
- SPIE Proceedings
- Publisher
- SPIE
- Published
- 2007-05-15
- ISSN
- 0277-786X (ISSN-L)
- OpenAlex
- W2036388886
- Cited by
- 2
- References
- 0
- Citations by year
- 2015: 1
- FWCI
- 1.00
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (publishedVersion)
- Funders
- University of Bristol
- Medical Research Council
- Topics
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Corneal surgery and disorders
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Optical Imaging and Spectroscopy Techniques
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Adaptive optics and wavefront sensing
- Keywords
- corneal stroma, visible light transmission, light scattering, corneal ultrastructure, peripheral cornea, corneal hydration, spectral transmittance, extinction, corneal thickness, bovine cornea, human cornea
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