Results 231 to 240 of about 24,883 (298)
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Understanding corneal topography
Current Opinion in Ophthalmology, 2000With the increase in corneal laser refractive surgery, there is a greater need for precise evaluation of the corneal surface. Articles published in the past year have reported possible use of confocal scanning laser technology-based devices to image the cornea.
S K, Rao, P, Padmanabhan
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Current Opinion in Ophthalmology, 1993
As more clinicians utilize videokeratography, an understanding of corneal topography is assuming an increasing role in the practice of ophthalmology. During this past year investigators have critically examined the methods employed in the utility of these devices as well as the accuracy and reproducibility of the algorithms embodied in ...
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As more clinicians utilize videokeratography, an understanding of corneal topography is assuming an increasing role in the practice of ophthalmology. During this past year investigators have critically examined the methods employed in the utility of these devices as well as the accuracy and reproducibility of the algorithms embodied in ...
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Documenta Ophthalmologica, 1977
This paper explores the many aspects of the nature and measurement of the corneal surface. Its structure and the factors that influence it are described. The traditional techniques of keratometry are summarized and there is an emphasis on new experimental methods of determining corneal topography including moiré, holographic interferometric and profile
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This paper explores the many aspects of the nature and measurement of the corneal surface. Its structure and the factors that influence it are described. The traditional techniques of keratometry are summarized and there is an emphasis on new experimental methods of determining corneal topography including moiré, holographic interferometric and profile
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Current Opinion in Ophthalmology, 1994
Computer-assisted videokeratography systems are becoming the prevailing method for analysis of the corneal surface. A realistic insight into the limitations of these topography systems is critical for proper interpretation of the data. Methods based on reflections have limited accuracy when measuring aspherical surfaces.
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Computer-assisted videokeratography systems are becoming the prevailing method for analysis of the corneal surface. A realistic insight into the limitations of these topography systems is critical for proper interpretation of the data. Methods based on reflections have limited accuracy when measuring aspherical surfaces.
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Seminars in Ophthalmology, 1998
Corneal topography plays an important role in laser in situ keratomileusis (LASIK). Preoperative screening permits the detection of keratoconus and other corneal shape anomalies that may be a contraindication for refractive surgery. Monitoring the progress of the surgical outcome with topography is helpful to detect postoperative complications such as ...
T, Oshika, S D, Klyce
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Corneal topography plays an important role in laser in situ keratomileusis (LASIK). Preoperative screening permits the detection of keratoconus and other corneal shape anomalies that may be a contraindication for refractive surgery. Monitoring the progress of the surgical outcome with topography is helpful to detect postoperative complications such as ...
T, Oshika, S D, Klyce
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Corneal Topography and Accommodation
Cornea, 2003To investigate whether there are significant changes in corneal topography during accommodation in normal corneas and corneas that are pathologically thinner due to keratoconus.A videokeratoscope was modified to present an accommodation stimulus that was coaxial with the instrument's measurement axis.
Buehren, Tobias +4 more
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Corneal Topography of Keratoconus
Cornea, 1991Sixty-three eyes of 49 patients with keratoconus were studied by means of computer-assisted corneal topographic analysis. Two patients with keratoconus in one eye had no topographic evidence of keratoconus in the opposite eye. Keratoconic topographic alterations were classified into two groups.
S E, Wilson, D T, Lin, S D, Klyce
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Corneal Topography Using Rasterstereography
European Journal of Implant and Refractive Surgery, 1989ABSTRACT: Rasterstereography is a new method of determining the topography of the comea. Unlike Placido disc types of systems it does not depend on the reflectivity of the corneal surface, and it can provide information about the entire corneal, limbal and interpalpebral conjunctival surfaces.
R C, Arffa, J W, Warnicki, P G, Rehkopf
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Computerized corneal topography of furrow corneal degeneration
Journal of Cataract and Refractive Surgery, 1997To analyze the corneal topography features of furrow corneal degeneration.Western Galilee-Nahariya Medical Center, Nahariya, Israel.Computer-assisted corneal topography analysis of two patients with furrow corneal degeneration was obtained and studied.The typical appearance of circumferential peripheral thinning in the lucid interval between the limbus
S, Rumelt, U, Rehany
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Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1992
F. Derrien, A. Le Mehaute, J. Colin
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F. Derrien, A. Le Mehaute, J. Colin
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