粘上 发表于 2025-3-21 16:31:12

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MOCK 发表于 2025-3-21 23:52:30

Scheimpflug Camera-Based Systemscorneal surfaces, corneal pachymetry and anterior chamber depth. The effects of misalignment and eye movement can be reduced by using a dual Scheimpflug system with two cameras. The accuracy of measurements can be improved by incorporating Placido imaging into the device.

谆谆教诲 发表于 2025-3-22 02:51:41

Corneal Surface Diseaseall-scale changes that disrupt the image quality. Local elevations or depressions produce corresponding small areas of steepening or flattening..Local peripheral lumps such as a pterygium or bleb produce flattening due to filling in of the limbus, subepithelial sclerosis and an exaggerated tear film meniscus at its margin.

SLING 发表于 2025-3-22 06:46:45

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格子架 发表于 2025-3-22 09:34:08

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Accomplish 发表于 2025-3-22 15:01:02

https://doi.org/10.1007/978-1-4614-7064-9gorithms applied to each point on the two-dimensional mire image generate a three-dimensional interpretation of the corneal shape. The accuracy centrally is approximately 0.15D, which drops more peripherally and in irregular corneas.

Accomplish 发表于 2025-3-22 20:24:21

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恶意 发表于 2025-3-23 00:46:43

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酷热 发表于 2025-3-23 02:39:40

Projection-Based Systemse projection-based technique most commonly used in commercial systems is slit photography, which gives an accuracy similar to other commercially available devices. However, the other techniques have potentially a higher accuracy and other advantages but need further development before being introduced to regular clinical practice.

侵蚀 发表于 2025-3-23 09:37:42

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查看完整版本: Titlebook: Corneal Topography; Principles and Appli Melanie Corbett,Nicholas Maycock,David O‘Brart Book 2019Latest edition Springer Nature Switzerland