Abstract
Complex machinery is used in ophthalmic surgery. The commonest machines in use are for phaco-emulsification and pars plana vitrectomy. They consist of a computer, pumps and instrument devices in the body of the machine and foot pedals to control the functions. In the case of phaco-emulsification the devices include an ultrasonic transducer, and piezo electric crystals that turn electronic signals into mechanical energy. In vitrectomy the devices include guillotine cutters driven by electronic motors or by compressed gas (Fig. 6.1).
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Bond LJ, et al. Physics of phacoemulsification. Washington: United States. Department of Energy; 2003.
Fisher R. Elastic constants of the human lens capsule. J Physiol. 1969;201(1):1–19.
Weeber HA, et al. Dynamic mechanical properties of human lenses. Exp Eye Res. 2005;80(3):425–34.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer International Publishing Switzerland
About this chapter
Cite this chapter
Williamson, T.H. (2016). Machines. In: Intraocular Surgery. Springer, Cham. https://doi.org/10.1007/978-3-319-27990-9_6
Download citation
DOI: https://doi.org/10.1007/978-3-319-27990-9_6
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-27988-6
Online ISBN: 978-3-319-27990-9
eBook Packages: MedicineMedicine (R0)