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| 1. |
Feature Issue on Corneal Topography |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 873-873
Raymond Applegate,
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PDF (61KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 2. |
Look Out PRK, Here Comes LASIK—Maybe |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 874-875
&NA; &NA;,
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PDF (210KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 3. |
World Council of Optometry Set for Israel |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 875-876
&NA; &NA;,
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PDF (162KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 4. |
Go Figure—Sunsoft Multiples Call for a Calculator Update |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 876-876
&NA; &NA;,
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PDF (58KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 5. |
Revision in Optics and Refraction |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 877-877
Jeffrey Walline,
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PDF (58KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 6. |
System for Ophthalmic Dispensing, 2nd ed |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 878-878
Colin Fowler,
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PDF (96KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 7. |
Accommodation, Nearwork and Myopia |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 879-879
Theodore Grosvenor,
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PDF (95KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 8. |
The Bates Method, A Complete Guide to Improving Eyesight— Naturally |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 880-880
Theodore Grosvenor,
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PDF (105KB)
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ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 9. |
Corneal Geometry Reconstruction with the Keratron Videokeratographer |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 881-894
RENZO MATTIOLI,
NANCY TRIPOLI,
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PDF (1297KB)
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摘要:
BackgroundColor-coded corneal maps produced by computer-assisted videokeratographers (CAVKs) have become an indispensable tool for clinical understanding of corneal shape. However, Placido-based CAVKs are criticized as theoretically incapable of producing accurate corneal height information.PurposeThis paper describes how the Keratron (Optikon 2000, Rome, Italy) integrated design innovations to achieve accuracy and map use previously thought to be unobtainable.MethodsThe Keratron implemented a spherically unbiased surface reconstruction method that yields height, axial power, and instantaneous curvature without derivation of one quantity from another. Processing innovations resulted in sub-micron height accuracy. The Keratron includes axial power, instantaneous curvature, refractive maps, a height map (spherical offset), pupil edge detection, a “move axis” feature, process editing, indices, a contact lens program, and photorefractive keratectomy (PRK) simulation.ConclusionsThe algorithms for surface reconstruction and the design solutions implemented in the Keratron resulted in accurate height, axial power, and instantaneous curvature measurement and valid, clinically useful maps, as well as additional user options and features.
ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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| 10. |
Modeling the Cornea with the Topographic Modeling System Videokeratoscope |
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Optometry and Vision Science,
Volume 74,
Issue 11,
1997,
Page 895-898
DOUGLAS BRENNER,
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PDF (334KB)
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摘要:
The algorithms and models used by the Topographic Modeling System (TMS) corneal topography systems are described. The systems are calibrated to report the power at a number of points along each of 256 meridians. The power reported is the power of an equivalent sphere. From the radius of the equivalent sphere and the optical properties of the videokeratoscope, shape and a more accurate estimate of power are calculated. The TMS differs from most other videokeratoscopic systems in that it estimates the power and does not use axial distance.
ISSN:1040-5488
出版商:OVID
年代:1997
数据来源: OVID
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