Comparison of optic disc image assessment methods when examining serial photographs for glaucomatous progression
| Autor: | William H. Morgan, Ludmila Jitskaia, Yogesan Kanagasingam, Phillip H. House, Chris J Barry, Robert H. Eikelboom, Max Cuypers |
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| Rok vydání: | 1999 |
| Předmět: |
medicine.medical_specialty
genetic structures Optic Disk Optic disk Glaucoma Neuroretinal rim width Stereoscopy Sensitivity and Specificity law.invention Cellular and Molecular Neuroscience law Ophthalmology medicine Photography Humans business.industry Disease progression medicine.disease Original articles - Clinical science Sensory Systems eye diseases medicine.anatomical_structure Assessment methods Disease Progression sense organs business Optic disc |
| Zdroj: | The British journal of ophthalmology. 84(1) |
| ISSN: | 0007-1161 |
| Popis: | Aim—To assess serial, simultaneous stereo optic disc images by four methods for glaucomatous progression. Methods—Using varying techniques, two ophthalmologists assessed serial optic disc images of 52 eyes from 27 patients with a mean duration between images of 18 months. The neuroretinal rim width was qualitatively assessed by four assessment methods and compared with quantitative rim measurements made using PC based software. Results—The highest sensitivity of 83% was achieved using computerised stereo chronoscopy. Conclusion—Stereo chronoscopy improved the detection of subtle optic disc changes when compared with simpler assessment techniques. (Br J Ophthalmol 2000;84:28‐30) Observation of the optic disc is a key factor in the management of glaucoma and can be aided by using serial optic disc photographs. Stereo photography and stereoscopic viewing give an enhanced perception of disc topography assisting the interpretation of small changes in the disc structure. Stereo chronoscopy is a tool that can be used to view serial stereo pairs of images. The images need to be aligned so that they are superimposed and viewed alternately. Any changes which have occurred between imaging sessions appear to “flutter” while the rest of the image is stable when the serial images are flickered. Stereo chronoscopy has been shown to improve the sensitivity of detection of small disc changes 1‐4 |
| Databáze: | OpenAIRE |
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