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Abstract #8784 Published in IGR 5-1
The construction of a model eye for investigation of laser-tissue interactions in scanning laser ophthalmoscopy
Rakebrandt F; North RV; Erichsen JT; Drasdo N; Fowler C; Cowey A; Morgan JEOptometry and Vision Science 2003; 80: 252-258
PURPOSE: To develop a model eye to study laser-tissue interactions during retinal imaging with scanning ophthalmoscopy. METHODS: A model eye was designed to match the optical properties of the human eye based on the Bennett and Rabbetts schematic eye. RESULTS: Alterations in axial length resulted in changes in refractive error similar to those in the human eye (3.70 D for 1 mm in axial length). Perfusion-fixed retinal tissue could be successfully imaged using the Heidelberg Retina Tomograph and Optical Coherence Tomograph to provide images that are similar in quality to those obtained in vivo. CONCLUSIONS: The model eye should be a valuable tool for investigating laser-tissue interactions during scanning laser ophthalmoscopy and the derivation of digital retinal and tomographic images. This model should also enable a determination of the accuracy with which digital imaging techniques, such as the optical coherence tomograph and Heidelberg Retina Tomograph, measure retinal structure.
Dr. J.E. Morgan, Department of Ophthalmology, Univ. of Wales College of Medicine, Cardiff CF4 4XW, UK. morganje3@cardiff.ac.uk
Classification:
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
6.9.1 Laser scanning (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)
