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Issue No.04 - July/August (1999 vol.19)
pp: 74-82
ABSTRACT
<p>The increasing popularity of refractive surgery -- photorefractive keratectomy (PRK) and laser in-situ keratomileusis (Lasik) -- to modify the human cornea mandates detailed information on the 3D structure of individual cornea layers. Such information may be gathered by very high-frequency (VHF) ultrasound scanning. We describe the algorithms, features, and design of a software application for the functional analysis and visualization of VHF ultrasound data.</p> <p>Our software uses bicubic Bezier patches to reconstruct the surfaces of the cornea. It applies ray tracing techniques in analyzing the thickness of the tissue layers that make up the cornea. The program generates both 2D and 3D representations of the results of the analysis. We packaged the application in a graphical user interface to enhance ease of use for ophthalmologists not necessarily trained in computational technology.</p>
CITATION
Matthew D. Segall, Dan Z. Reinstein, Neil F. Johnson, "Visualizing VHF Ultrasound of the Human Cornea", IEEE Computer Graphics and Applications, vol.19, no. 4, pp. 74-82, July/August 1999, doi:10.1109/38.773967
REFERENCES
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2. D.Z. Reinstein et al., "Epithelial and Corneal Thickness Measurements by High-Frequency Ultrasound Digital Signal Processing," Opthalmology, Vol. 101, No. 1, 1994, pp. 140-146.
3. D.Z. Reinstein et al., "Very High-Frequency Ultrasound Corneal Analysis Identifies Anatomic Correlates of Optical Complications of Lamellar Refractive Surgery," Ophthalmology, Vol. 106, No. 3, 1999, pp. 474-482.
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5. D.Z. Reinstein et al., "Epithelial Lenticular Types of the Human Cornea: Classification and Analysis of their Influence on PRK," Opthalmology (Supplement), Vol. 102, 1995, p. 156.
6. S. Patel, J. Marshall, and F.W. Fitzke, "Shape and Radius of Posterior Corneal Surface," Refractive&Corneal Surgery, Vol. 9, 1993, pp. 173-181.
7. W.M. Hart, "The Temporal Responsiveness of Vision," in Adler's Physiology of the Eye, R.A. Moses and W.M. Hart, eds., C.V. Moseby Company, St. Louis, Mo., 1987, p. 436.
8. S. Patel et al., "The Shape of Bowman's Layer in the Human Cornea," J. of Refractive Surgery, Vol. 14, No. 6, 1998, pp. 636-640.
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