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AbstractSA.10.08 New possibilities of digital imaging of eye fundus with longwave illumination Naumenko V., Pasyechnikova N., Korol A., Muzhychuk O., Pasiechnikov A.
The Filatov Institute of Eye Diseases & Tissue Therapy Objective: To increase the quality and utility of non-invasive examination of eye fundus.
Methods: 140 patients (262 eyes) with various eye pathology and 10 healthy volunteers (20 eyes) were examined using longwave imaging (photo & video), fluorescein angiography, optical coherence tomography (OCT) and ophthalmoscopy of eye fundus. Longwave imaging of eye fundus carried out with transpalpebral and transscleral illumination with different wavelengths (660, 810, 940 nm) without local anaesthesia or intravenous injection of the dye. Longwave imaging was used without fluorescein angiography in cases of intolerance to the fluorescein. We observed patients with different levels of ocular media opacities and diameter of pupil.
Results: Digital imaging of eye fundus with indirect longwave illumination allowed to image structures of retina and choroid in different spectral areas, to receive additional topographical information about retinal pigment epithelium layer and Bruch membrane, to determine early change of these structures, to detect the greatest number of drusen and subretinal deposits. Infrared imaging provided topographic information of neovascular membranes, showed white halo-like contour and dark central part of membranes. It may become a useful aid in detecting neovascular membranes in situations, in which intolerance or risk related to the injection of fluorescein dye, undilated pupil or ocular media opacity present.
Conclusions: Digital imaging of eye fundus with indirect longwave illumination promotes to take additional information of eye fundus structures without additional injection of dye or possible in cases of undilated pupils. At the same time, it simpler to use in compare with other methods of digital examinations of eye fundus.
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