Page 64 - Computational Retinal Image Analysis

54 CHAPTER 3 The physics, instruments and modalities of retinal imaging

the variations in image characteristics with wavelength and between fundus cameras,
various types of SLO and OCT systems.
Owing to its importance in retinal imaging, and also the anterior segment of the
eye, we have given a particular emphasis to OCT, and have detailed the principles
of operation and the implications from for image analysis and clinical application.
In particular, it is difficult to exaggerate importance of the depth profiling ability of
OCT: this is a striking exemplar of translation of research from the physics lab to
clinical application.
Looking to the future, there is an increasing trend to combine multiple imaging
modalities within a single device, to increase the field of view for the detection of
pathologies that affect or originate at the retinal periphery and to implement devices
that are portable and more convenient to use in primary care. Lastly there is strong
motivation for telemedicine and cost reduction in devices that provide a necessary
and sufficient performance at a price that is affordable to the majority of the world's
population living in low-to-middle societies. This will involve a clear increase in the
role of computational imaging to reduce the cost of these Systems [67] and auto-
mated computer analysis.

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