corneal topography


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Related to corneal topography: keratoconus

corneal topography

The use of a camera and a computer to make a three-dimensional map of the cornea of the eye, typically in preparation for surgery.
Synonym: videokeratography
See also: topography

corneal topography 

A map of the variations in the curvature (and power) of the anterior surface of the cornea. The typical map shows that the average adult cornea is steeper in the vertical than in the horizontal meridian and has the form of a flattening ellipsoid. It is typically done with a photo-keratoscope or a videokeratoscope. Cornealtopography can also be determined with a scanning-slit topographer, in which a computerized system integrates a series of slit-beam images to produce a map of the curvature and elevation of the anterior and posterior surfaces enabling a diagnosis of anterior and posterior keratoconus, and indirectly providing a measurement of corneal thickness. See keratoscope; photokeratoscopy; videokeratoscope.
References in periodicals archive ?
When analysing corneal topography maps, a clear systematic approach is advised to avoid reading errors.
Recently, however, some companies are linking refractive surgery lasers to corneal topography machines, which results in surgery based entirely on the cornea's shape, thus disregarding the refractive astigmatism correction.
2) Colour coded maps allow pattern recognition and enables the user to detect changes in corneal topography over time.
With a quick glance along the aisles of the exhibition hall, the notable launch of equipment capable of providing dual optical biometry and corneal topography aimed specifically at myopia control assessment, signals the move of this emerging area of practice from the niche to the mainstream.
Systems, Optical Biometers, Corneal Topography Systems, Slit
of Tennessee) provides ophthalmologists, optometrists, and anterior segment surgeons with a guide to corneal topography in the context of wavefront technology.
Measurements of axial length (using partial coherence interferometry, Zeiss IOLMaster), anterior chamber depth, corneal topography, cycloplegic refraction and visual acuity are being performed at 6-month intervals.
The major product segments analyzed are Diagnostic Devices (Perimeters, Refractors, Slit Lamps, Tonometers, Fundus Cameras, Lens Meters, Ophthalmoscopes, Diagnostic Ultrasound Equipment, Corneal Topography Systems, & Diagnostic Imaging Systems), and Surgical Products (Ophthalmic Disposables, Ophthalmic Lasers, & Ophthalmic Surgical Microscope).
NO7 CONTACT LENSES "is excited" to announce that research scientist Randy Kojima, a corneal topography expert, will join the company for a series of on-stand presentations.
5kw), Autorefractometer with keratometer,Advanced corneal Topography,Digital lensometer,ECG machine with Print and View,ECG Jelly,MVA kit Deep freezer,Biosafety Cabinet,
Dr Catharine Chisholm and Dr Rachel Hiscox will be on-hand to further our understanding of corneal topography.
Supply, delivery, commissioning, training and maintenance of ophthalmology: laser, corneal topography, retinal .