Results 151 to 160 of about 387,211 (228)
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Ophthalmic & physiological optics, 2022
To compare corneal topography, pachymetry and higher order aberrations in keratoconic and normal eyes; to investigate their association in keratoconic eyes; and to determine their diagnostic ability for detecting subclinical keratoconus in a Nepalese ...
Sandeep Kandel +8 more
semanticscholar +1 more source
To compare corneal topography, pachymetry and higher order aberrations in keratoconic and normal eyes; to investigate their association in keratoconic eyes; and to determine their diagnostic ability for detecting subclinical keratoconus in a Nepalese ...
Sandeep Kandel +8 more
semanticscholar +1 more source
Current Opinion in Ophthalmology, 1997
In the review period, limitations of individual Placido disk-based topography systems have been studied and new principles, such as raster photogrammetry, pancorneal slit topography, laser holographic interferometry, and confocal laser scanning topography, have been introduced for laboratory or clinical work.
B, Seitz, A, Behrens, A, Langenbucher
openaire +2 more sources
In the review period, limitations of individual Placido disk-based topography systems have been studied and new principles, such as raster photogrammetry, pancorneal slit topography, laser holographic interferometry, and confocal laser scanning topography, have been introduced for laboratory or clinical work.
B, Seitz, A, Behrens, A, Langenbucher
openaire +2 more sources
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.
Stephen D. Klyce +2 more
openaire +3 more sources
Archives of Ophthalmology, 1981
We present an introduction to a clinical quantitative corneascope for measurement of corneal topography in detail. This instrument provides contour keratometry in all corneal meridians. We review the normal myopic and hyperopic eye contours, keratoconus, pellucid marginal degeneration, and wound gape and compression related to cataract surgery.
A. E. Reynolds +2 more
openaire +3 more sources
We present an introduction to a clinical quantitative corneascope for measurement of corneal topography in detail. This instrument provides contour keratometry in all corneal meridians. We review the normal myopic and hyperopic eye contours, keratoconus, pellucid marginal degeneration, and wound gape and compression related to cataract surgery.
A. E. Reynolds +2 more
openaire +3 more sources
The Corneal Topography of Epikeratophakia
Journal of Refractive Surgery, 1990ABSTRACT: Epikeratophakia is a surgical technique initially developed for the correction of aphakia, and later adapted for the correction of keratoconus and myopia. The concurrent development of colorcoded computerized corneal topography has greatly assisted in the evolution of epikeratophakia. Corneal topography has demonstrated the importance of both
Stephen D. Klyce +2 more
openaire +3 more sources
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 ...
Tetsuro Oshika, Stephen 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 ...
Tetsuro Oshika, Stephen 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
openaire +3 more sources
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.
Srinivas K Rao, Prema 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 ...
openaire +3 more sources
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 ...
openaire +3 more sources
, 2014