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PubMed · 9685010

Tele-ophthalmic screening using digital imaging devices.

K Yogesan·I J Constable·R H Eikelboom·P P van Saarloos
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Abstract

BACKGROUND: Digital imaging systems provide immediate, magnified images that can easily be analysed, enhanced, archived, printed on near photographic-quality paper and transferred electronically to remote computers. We have assembled a digital ophthalmic system and tested it on patients with some common causes of blindness: corneal scarring and cataract, diabetic retinopathy, macular degeneration and glaucoma. METHODS: Digital images were obtained using a variety of ophthalmic imaging devices ranging from slit-lamp, fundus camera, indirect ophthalmoscope and scanning laser ophthalmoscope. These images were compressed in order to concentrate image information (image size reduced by 90-95%) and minimize transmission time (reduced by 97-98%). Standard or mobile telephone lines were used to transmit images to remote terminals. RESULTS/DISCUSSION: Transmission time was reduced from 15-20min to 20-30s and the image size was reduced from 1.3 MB to 20-30 kB by compressing the images before transmission. Image quality is still excellent.

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CataractCorneal DiseasesDiabetic RetinopathyDiagnostic ImagingEye DiseasesGlaucomaHumansImage Processing, Computer-AssistedMacular DegenerationTelepathologyJournal Article

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K Yogesan, I J Constable, R H Eikelboom, P P van Saarloos. 1998. Tele-ophthalmic screening using digital imaging devices.. https://doi.org/10.1111/j.1442-9071.1998.tb01385.x

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