System based on the contrast of Purkinje images to measure corneal and lens scattering
Current methods to measure intraocular scattering provide information on the total scattered light, which consists of the combined contributions originating from different ocular structures. In this work, we propose a technique for the objective and independent assessment of scattering caused by the...
| Authors: | , , , , , |
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| Format: | article |
| Publication Date: | 2018 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/121796 |
| Online Access: | https://hdl.handle.net/2117/121796 https://dx.doi.org/10.1364/BOE.9.004907 |
| Access Level: | Open access |
| Keyword: | Intraocular lenses Cornea Physiological optics Light--Scattering Scattering measurements Stray light Ghost reflections Ophthalmic optics and devices Ophthalmology Lents intraoculars Còrnia Òptica fisiològica Llum -- Dispersió Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Oftalmologia Àrees temàtiques de la UPC::Ciències de la visió::Òptica física::Llum Àrees temàtiques de la UPC::Ciències de la visió::Instruments òptics i optomètrics::Lents oftàlmiques |
| Summary: | Current methods to measure intraocular scattering provide information on the total scattered light, which consists of the combined contributions originating from different ocular structures. In this work, we propose a technique for the objective and independent assessment of scattering caused by the cornea and the lens based on the analysis of the contrast of the third and fourth Purkinje images. The technique is preliminarily validated first by using artificial eyes with different levels of corneal and lens scattering; second, it is validated in eyes wearing customized contact lenses to simulate corneal scattering and eyes with nuclear cataracts. Finally, it is tested on a larger population of eyes with cataracts and corneal disorders to prove its clinical usefulness. |
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