Optical coherence elastography of cold cataract in porcine lens
| Autor: | Manmohan Singh, Chen Wu, Kirill V. Larin, Hongqiu Zhang, Salavat R. Aglyamov, Achuth Nair |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Paper
crystalline lens medicine.medical_specialty Materials science genetic structures Swine Biomedical Engineering cold cataract Cataract formation Early detection 01 natural sciences Cataract law.invention Imaging 010309 optics Biomaterials Optical coherence elastography Cataracts Optical coherence tomography law Ophthalmology 0103 physical sciences Lens Crystalline medicine Animals tissue biomechanical properties optical coherence elastography medicine.diagnostic_test Phantoms Imaging Equipment Design medicine.disease Atomic and Molecular Physics and Optics eye diseases Elasticity Electronic Optical and Magnetic Materials Lens (optics) Clinical diagnosis Elasticity Imaging Techniques Elastography sense organs Tomography Optical Coherence |
| Zdroj: | Journal of Biomedical Optics |
| ISSN: | 1560-2281 1083-3668 |
| Popis: | Cataract is one of the most prevalent causes of blindness around the world. Understanding the mechanisms of cataract development and progression is important for clinical diagnosis and treatment. Cold cataract has proven to be a robust model for cataract formation that can be easily controlled in the laboratory. There is evidence that the biomechanical properties of the lens can be significantly changed by cataract. Therefore, early detection of cataract, as well as evaluation of therapies, could be guided by characterization of lenticular biomechanical properties. In this work, we utilized optical coherence elastography (OCE) to monitor the changes in biomechanical properties of ex vivo porcine lenses during formation of cold cataract. Elastic waves were induced in the porcine lenses by a focused micro air-pulse while the lenses were cooled, and the elastic wave velocity was translated to Young’s modulus of the lens. The results show an increase in the stiffness of the lens due to formation of the cold cataract (from 11.3±3.4 to 21.8±7.8 kPa). These results show a relation between lens opacity and stiffness and demonstrate that OCE can assess lenticular biomechanical properties and may be useful for detecting and potentially characterizing cataracts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|