Biomedical Engineering Reference
In-Depth Information
Figure 15.3.
Examples of intraocular lenses (adopted from http://www.microviscphaco.com/)
[I-Lens® Intraocular Lenses]
mercial technology that has benefi ted over 20,000 people. In the past 20 years,
cochlear prostheses have become multi-channel systems. The fi rst implants
employed single electrodes, whereas present devices use up to 22 contacts inside
the scala tympani. In most processing strategies, one electrode is driven at a time,
although analog drives present currents to all electrodes simultaneously. A
generic architecture of the cochlear prosthesis has been shown in Figure 15.4.
There are currently three commercially available cochlear prosthesis, namely:
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