Corneal Topography also referred to as Photokeratoscopy and Videokeratoscopy, is a technique that is used to map the curved surface of the Cornea. This can help measure the quality of vision as well as assist in LASIK surgery and the fitting of contact lenses. This procedure is non-invasive and painless to the patient. These procedures are the most common among Ophthalmology and Optometry practices and ample consideration for Corneal Topography is important.
Some vendors offer Corneal Topographers that also include other applications; such as Pupillometers and Tear film analyzers. When purchasing a Corneal Topographer, decide on which applications are necessary and consider future growth of a practice. A product that encompasses multiple applications may fit best.
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- Features:
- Proven Placido Disk Technology with patented Cone-of-Focus™ Alignment System
- SmartCapture™ Image Analysis Technology analyzes multiple images during alignment and automatically selects the highest quality image
- MasterFit™ II Contact Lens Software helps streamline the fitting of gas permeable (GP) lenses and guides you through difficult and specialty fits
- Data compatibility with previous generation ATLAS Corneal Topography Systems to facilitate data management and patient follow up
- Compatible with Visante® omni Anterior Segment Evaluation to generate posterior topography
- FORUM® connectivity
- Interface: Inquire
- Display: Integrated 12.1" TFT-LCD color flat panel display
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- Features:
- Intuitive, user-friendly system is ideal for primary care, contact lens fitting, pathology detection and corneal refractive surgery management
- 22-ring Placido Cone provides larger limbus-to-limbus field of view and has ideal spacing to avoid ring crossover
- Patented Cone-of-Focus™ means superior electronic alignment for greater repeatability and accuracy
- Patented patient interface positions patient for wide peripheral overage and automatically detects OD/OS
- Interface: Inquire
- Display: 10.4" 18 bit color TFT screen high resolution, active color display.
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- Features: Wavefront Analysis For True Vision Diagnostics:
- Optical Path Difference (OPD)
- Wavefront High-Order
- Wavefront Total
- Eye Image Displaying Mesopic and Photopic Pupils
- Internal OPD
- Refractive Maps
- Point Spread Function
Applications:
- Evaluating all eyes not correctable to 20/20
- Differentiating corneal from lenticular aberrations
- Comparing objective to subjective point spread function (PSF)
- Assessing cataract patients' symptoms
and "quality" of vision
- Pre- and post-posterior capsular opacification
(PCO) effects
- Evaluating post-op IOL tilt, decentration, multifocal optics
- Assessing contact-lens candidates for soft- versus hard-lens wear
- Contact-lens care, including orthokeratology (e.g., CRT)
- Evaluating corneal aberrations secondary to certain lid and ocular surface pathologies
- Monitoring progress and visual effects from varying ocular pathologies and surgeries
- Assessing pre- and post-corneal refractive-surgery patients
- Evaluating post-op refractive-surgery complaints
- Counseling patients on their specific benefits
(and limitations) with conventional versus
wavefront-guided custom ablation
- Interface: Inquire
- Display: Inquire
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- Features: Wavefront Analysis For True Vision Diagnostics:
- Optical Path Difference (OPD), Retro Illumination Image,
- Wavefront High-Order
- Wavefront Total
- Eye Image Displaying Mesopic and Photopic Pupils
- Internal OPD
- Refractive Maps
- Point Spread Function
Applications:
- Evaluating all eyes not correctable to 20/20
- Differentiating corneal from lenticular aberrations
- Comparing objective to subjective point spread function (PSF)
- Assessing cataract patients' symptoms and "quality" of vision
- Pre- and post-posterior capsular opacification (PCO) effects
- Evaluating post-op IOL tilt, decentration, multifocal optics
- Assessing contact-lens candidates for soft- versus hard-lens wear
- Contact-lens care, including orthokeratology (e.g., CRT)
- Evaluating corneal aberrations secondary to certain lid and ocular surface pathologies
- Monitoring progress and visual effects from varying ocular pathologies and surgeries
- Assessing pre- and post-corneal refractive-surgery patients
- Evaluating post-op refractive-surgery complaints
- Counseling patients on their specific benefits (and limitations)
with conventional versus wavefront-guided custom ablation
- Interface: Inquire
- Display: Inquire
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- Features:
- Small diameter, sharp-angle, 30 ring projector for enhanced ring quality on the cornea
- Dual-edge ring finder with 60 detectable rings
- 21,600 data points
- High-resolution camera (768 x 576 pixels)
- Single, multiple, and 3D map displays
- Axial, tangential, refractive and height algorithms
- Absolute, standard, adjustable and normalized scales
- Fast calculations and display
- Includes NIDEK Advanced Vision Information System (NAVIS) ophthalmic operating system
- Interface: Inquire
- Display: Inquire
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- Features:
- Combination of a corneal topographer and an exclusive real, built-in-keratometer
- Extremely high resolution (22.000 measuring points) and digital image transmission
- Short measuring time fraction of seconds guarantees high reproducibility
- Non-contact measuring
- Easy to use, because of sophisticated USB interface in Windows™-environment
- Easy to connect to PC via USB-Interface
- Easy to run because of network-capable software
- Easy to mount on a slit lamp
- Refractive compare display to control the progression of wearing Ortho-K-Lenses
- Keratoconus detection and quantification based on several Indices
- Contact lens fitting software with:
- real fluo image simulation,
- extensive pre-programmed CL database,
- editing function for your own line of lenses,
- customized, individual CL lens suggestion
- Interface:
- Digital data transmission from the bowl to your computer via a USB interface.
- The Easygraph is easy to run on its office network capable software and patient data is easily transferable.
- It is compatible with Microsoft® Windows® '98, 2000, ME and XP.
- Display: Several topographic maps, such as axial (sagittal), local (Tangential), elevation (several reference bodies available), refractive power, Fourier maps, Zernike map.
Several displays such as: Overview, large color map, 3D cornea, Fourier analysis, zernike analysis, Keratoconus Indices, Refractive map, elevation maps, corneal asphericity, Placido image, Refractive compare, compare examinations; CL distance map (fluo simulation); several difference and compare displays for all available maps, pupillometer analysis display.
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- Features:
- High-resolution and accurate measurement of the cornea due to 22,000 measuring points.
- Non-invasive tearfilm analysis
- Digital image transmission and automatic release guarantee top reproduction
- Intuitive and easily learnable application with Windows™-screen environment
- Non-contact measurement with a 3.15" distance
- Network capable software
- Keratoconus detection and quantification based on several indices
- Refractive compare display to control the progression of wearing Ortho-K-Lenses
- Contact lens fitting software with:
- Real fluo image simulation,
- Extensive pre-programmed CL database,
- Editing function for your own line of lenses,
- Customized, individual CL lens suggestion
- Oximap - shows the oxygen transmissibility of soft contact lenses
- Pupillometry module optional
- Interface: Inquire
- Display: Several topographic maps, such as: axial (sagittal), local (Tangential), elevation (several reference bodies available), refractive power, Fourier maps, Zernike map.
Several displays such as: Overview, large color map, 3D cornea, Fourier analysis, zernike analysis, Keratoconus Indices, Refractive map, elevation maps, corneal asphericity, Placido image, Refractive compare, compare examinations; CL distance map (fluo simulation); several difference and compare displays for all available maps, pupillometer analysis display.
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- Features: The Pentacam® calculates a three dimensional mathematical model of the anterior segment to provide the following information:
- anterior and posterior corneal topography and elevation maps
- corneal pachymetry from limbus to limbus, absolute and relative
- 3D anterior chamber analyzing, chamber angle in 360°, chamber volume, chamber depth map
- 3D lens density quantification and PNS (Pentacam Nucleus Staging) - automatic Keratoconus detection and quantification
- tomography - several compare display to monitor progression
- corneal wavefront software of the anterior, posterior and total cornea, e.g. Z4,0 for optimized IOL selection to reduce spherical aberrations
- improved IOL-calculation for post LASIK, PRK and RK patients
- linked to many commercially available IOL calculators
- several software modules such like Holladay Report with EKR's, Belin/Ambrosio Enhanced Ectasia detection, Contact Lens fitting software, pIOL simulation software
- available in different software and hardware configurations for every need and budget
- Interface: USB, DICOM compatible
- Display: Various topographic displays, such like axial (sagittal) anterior & posterior, local (tangential) anterior & posterior, refractive power (snells law), KPD, EKR, True Net Power, anterior and posterior elevation (different reference bodies such like e.g. BFS etc) anterior & posterior; various pachymetry displays, relative and absolute pachymetry; anterior chamber depth map; lens density map; CL distance map (fluo simulation); several difference and compare displays for all available maps, Holladay Report, Holladay EKR Detail Report, Pachymetric, Refractive, Topometric, Zernike Analysis (corneal wavefront), Belin/Ambrosio Enhanced Ectasia, Contact Lens fitting, pIOL fitting, Virtual Eye, several large color maps, several 4 map composite displays.
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- Features:
- Onboard state-of-the-art PC allows for complete stand-alone operation
- WiFi communication for optional external PC software
- Ease of operation
- Automatic "best image capture"
- Automatic pupil recognition
- Interface: Inquire
- Display: 8-inch touch panel monitor
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- Features:
- Dual Scheimpflug Imaging
- Merging of Placido and Scheimpflug Data
- Near/Far adjustable Fixation Target
- Eye Motion Correction
- Interface: System PC, flat screen, and instrument table
- Display: Flat screen monitor
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