Spectral retinal imaging for improved disease diagnosis





By 2020, there will be 200 million (estimate) visually-impaired people world wide. Main diseases in richer countries with aging populations are glaucoma, diabetic retinopathy and macular degeneration 80% of which are preventable or treatable.


The potential of hyperspectral imaging for characterisation of retinal diseases is enormous. Heriot Watt University and the Gloucestershire Eye Unit are conducting research involving recording hyperspectral images of diseased and healthy retina. The following benefits have been indicated:


         Ability to qualitatively map blood oxygenation and some indication of differential blood deoxygenation in diseased retina.


         Enhanced ability to delineate retinal structure (e.g. the optic disc, optic cup).


         Enhanced discrimination between healthy and diseased tissues.


         Improved imaging of specific retinal structures (e.g. the nerve fibre layer).

Example of retinal oximetry





Prof. Andy Harvey


Room 2.5

Mountbatten Building

School of Engineering and Physical Sciences

Heriot Watt University

Ricarton, Edinburgh, UK

EH14 4AS


email: a.r.harvey@hw.ac.uk

website: http://emfs1.eps.hw.ac.uk/~ceearh2

tel: +44 (0)131 451 3356

fax: +44 (0)131 451 4155