Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Corneal topography"”.
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Measuring Corneal Topography Using Wavefront Analysis Technique
… human cornea. Available techniques for measuring corneal topography include keratometry, videokeratoscopy, and scanning slit imaging. A new type of instrument, a corneal topographer based on a Hartmann-Shack wavefront sensor for measuring corneal elevation over a spherical surface, is presented in …
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Analysis of Corneal Topographic Optical Zone and Decentration after Myopic Refractive Surgery
… degree of decentration were determined through corneal topography. We divide the eyes with the degree of decentration. Lesser than 0.5mm were classified as the first group, from 0.5 to 1.0mm were classified as the second group. The ablation zone diameter in topography was compared with …
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Clinical Translation of Dynamic OCE for Corneal Biomechanical Assessment
Purpose: Determining corneal mechanical properties is required for understanding and diagnosing corneal shape changes caused by ocular disease, degeneration, or refractive surgery, yet remains a long-standing challenge. This dissertation aims to clinically translate dynamic optical coherence …
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Ocular biometric change in orthokeratology. An investigation into the effects of orthokeratology on ocular biometry and refractive error in an adult population.
… and posterior apical radii and p-values; corneal thickness and anterior chamber depth were measured using the Orbscan IIz; together with ocular biometry by IOL Master and a standard clinical refraction. All measurements were repeated at one night, one week, one, three, six and twelve …
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Visual Performance in Pseudophakia. The Effect of Meridional Blur in Pseudoaccommodation.
… (pupil size, anterior chamber depth (ACD), corneal and ocular aberrations, corneal multifocality, patient age, axial length). Further, the functionality of meridional blur was evaluated for alphabets in addition to the standard Roman alphabet using a VA task. The results confirm that myopic …