ArticleJournal of the mechanical behavior of biomedical materials2020
Full-field displacement measurement of corneoscleral shells by combining multi-camera speckle interferometry with 3D shape reconstruction.
Article in Journal of the mechanical behavior of biomedical materials, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 11 citations in OpenAlex.
- Real-Time Laser Interference Detection of Mechanical Targets Using a 4R Manipulator.Sensors (Basel, Switzerland) · 2023Article
- Real-time imaging of optic nerve head collagen microstructure and biomechanics using instant polarized light microscopy.Experimental eye research · 2022Article
- Effect of different preconditioning protocols on the viscoelastic inflation response of the posterior sclera.Acta biomaterialia · 2021Article
- Collagen fiber interweaving is central to sclera stiffness.Acta biomaterialia · 2020Article
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Authors and funding
4 authors at 1 institution in 2 countries.
Funding
Abstract
Changes in the biomechanical properties of the connective tissue of the eye occur with age and underlie the development of several ocular diseases, such as glaucoma, myopia, and keratoconus. The biomechanical dynamics of ocular connective tissue are measured by ex vivo inflation testing, in which intraocular pressure (IOP) is varied and optical methods are used to produce maps of corneal and scleral displacement. Current optical methods are limited by acquisition rate, occlusions, poor spatial resolution, and insufficient 3D mapping. We developed an interferometric optical method integrates four-camera electronic speckle pattern interferometry (ESPI) and a novel three-dimensional (3D) shape reconstruction process to measure shape and full-field mechanical deformations of corneal and scleral shells during ex vivo inflation testing. Each camera provides accurate measurements of the laser beam phase related to deformations of the specimen surface; a multi-view stereovision method generates the shape of the specimen and a functional form that links every pixel of a given camera to 3D points on the specimen's visible surface. In this way, dynamic deformations of the specimen are localized, with quantification of the time-dependent 3D displacements of the specimen at nanometric accuracy. The ESPI-3D system is suitable for analyzing scleral deformation and morphological changes caused by time-varying IOP.
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Registered trials
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