Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological Studies

Vision relies on precise eye movements controlled by six extraocular muscles (EOMs). Training kits and functional eye models are crucial for ophthalmological studies. The study investigates the potential of shape memory material (SMM) in ophthalmology, focusing on eye model mechanics and four therma...

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Main Authors: Zainab Ali, Jahan Zeb Gul
Format: Article
Language:English
Published: MDPI AG 2023-09-01
Series:Engineering Proceedings
Subjects:
Online Access:https://www.mdpi.com/2673-4591/45/1/54
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author Zainab Ali
Jahan Zeb Gul
author_facet Zainab Ali
Jahan Zeb Gul
author_sort Zainab Ali
collection DOAJ
description Vision relies on precise eye movements controlled by six extraocular muscles (EOMs). Training kits and functional eye models are crucial for ophthalmological studies. The study investigates the potential of shape memory material (SMM) in ophthalmology, focusing on eye model mechanics and four thermally actuated smart EOMs. SMM was chosen over other actuators because of its high-power density (36 W/kg), high actuation forces (100 gf), and high displacements (200%). Finite element method (FEM) simulation on a 3D eye model was performed to analyze the thermo-mechanical properties of smart muscle, revealing the shape memory effect and super elasticity which result in the four eye movements of elevation, depression, adduction, and abduction. FEM simulation, compared to the eye model prototype, yielded a 16 mm deformation in smart muscle with a thermal actuation of 313 K (40 °C). FEM analysis, while combining smart muscle with the eye model, resulted in a 6.8517 mm deformation in the simulation. Prototype deformation was acquired as 7.262 mm. The successful actuation of the eye using thermally actuated smart muscles proves its potential for ophthalmology kits.
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spelling doaj.art-33810553adc04269816389e2c8017b562023-12-22T14:06:39ZengMDPI AGEngineering Proceedings2673-45912023-09-014515410.3390/engproc2023045054Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological StudiesZainab Ali0Jahan Zeb Gul1Department of Mechatronics and Biomedical Engineering, Air University Main Campus PAF Complex, E-9, Islamabad 44230, PakistanDepartment of Mechatronics and Biomedical Engineering, Air University Main Campus PAF Complex, E-9, Islamabad 44230, PakistanVision relies on precise eye movements controlled by six extraocular muscles (EOMs). Training kits and functional eye models are crucial for ophthalmological studies. The study investigates the potential of shape memory material (SMM) in ophthalmology, focusing on eye model mechanics and four thermally actuated smart EOMs. SMM was chosen over other actuators because of its high-power density (36 W/kg), high actuation forces (100 gf), and high displacements (200%). Finite element method (FEM) simulation on a 3D eye model was performed to analyze the thermo-mechanical properties of smart muscle, revealing the shape memory effect and super elasticity which result in the four eye movements of elevation, depression, adduction, and abduction. FEM simulation, compared to the eye model prototype, yielded a 16 mm deformation in smart muscle with a thermal actuation of 313 K (40 °C). FEM analysis, while combining smart muscle with the eye model, resulted in a 6.8517 mm deformation in the simulation. Prototype deformation was acquired as 7.262 mm. The successful actuation of the eye using thermally actuated smart muscles proves its potential for ophthalmology kits.https://www.mdpi.com/2673-4591/45/1/54extraocular musclesophthalmological modelsshape memory materialthermally actuated smart musclesfinite element methodextraocular movements
spellingShingle Zainab Ali
Jahan Zeb Gul
Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological Studies
Engineering Proceedings
extraocular muscles
ophthalmological models
shape memory material
thermally actuated smart muscles
finite element method
extraocular movements
title Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological Studies
title_full Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological Studies
title_fullStr Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological Studies
title_full_unstemmed Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological Studies
title_short Shape Memory-Based Smart Extra Ocular Muscles for Ophthalmological Studies
title_sort shape memory based smart extra ocular muscles for ophthalmological studies
topic extraocular muscles
ophthalmological models
shape memory material
thermally actuated smart muscles
finite element method
extraocular movements
url https://www.mdpi.com/2673-4591/45/1/54
work_keys_str_mv AT zainabali shapememorybasedsmartextraocularmusclesforophthalmologicalstudies
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