Results 171 to 180 of about 297,400 (209)
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Corneal Topography and Corneal Thickness in Children
Journal of Pediatric Ophthalmology & Strabismus, 2013Purpose: To evaluate the corneal topography, thickness, and elevation (anterior and posterior corneal surface) in children. Methods: One hundred eyes of 100 patients with a mean ± standard deviation age of 10.6 ± 2.7 years (range: 5 to 15 years) were imaged.
Shailaja P, Reddy +2 more
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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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Corneal Topography and the Hirschberg Test.
Ophthalmic and Visual Optics, 1991An alternative approach to the problem of reconstucting the topography of the cornea by measurement of images formed by the corneal reflecting surface may be had by considering the effect of aspherical corneal topography on the "Hirschberg Test," a traditional clinical maneuver for the estimation of ocular misalignment.
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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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Measurement of corneal topography in keratoconus
Ophthalmic and Physiological Optics, 1993A new method is described for calculating the topography and curvature of an irregularly shaped cornea, Vertical planes of light are projected onto the cornea and points in x, y, z space are calculated from the light images on the corneal surface.
D A, de Cunha, E G, Woodward
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Methods of Analysis of Corneal Topography
Journal of Refractive Surgery, 1989ABSTRACT: The visual inspection of photokeratoscope mires permits the diagnosis of advanced anomalies in corneal shape and is an extremely useful adjunct to keratometry and slit-lamp microscope examination. However, corneal distortions too small to be appreciated by visual inspection of keratographs can seriously degrade visual acuity. In this article,
S D, Klyce, S E, Wilson
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Corneal topography in cataract surgery
Current Opinion In Ophthalmology, 1997Keratometry and videokeratography are the most important means of evaluating induced corneal changes after surgery and have comparable sensitivities in the paracentral region of the cornea. When cataract surgery is planned, corneal topography can be used preoperatively in the calculation of IOL power, particularly in difficult cases, such as in ...
B R, McQueen, C E, Martinez, S D, Klyce
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The Effect of Trephination on Corneal Topography
Ophthalmic Surgery, Lasers and Imaging Retina, 1995* BACKGROUND AND OBJECTIVE: A prospective study was performed to assess the effect of trephination on corneal curvature. * MATERIALS AND METHODS: Thirty-seven fresh porcine globes with intact corneal epithelium were used. Radius of curvature, central dioptric power, and powers and axes of the steepest and flattest meridians were obtained ...
D S, Greenfield +2 more
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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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Visualization in corneal topography
Proceedings Visualization '98 (Cat. No.98CB36276), 1998Vos, F.M., Spoelder, H.J.W.
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