Radius and asphericity of the posterior corneal surface determined by corrected Scheimpflug photography
作者： Michiel Dubbelman , Henk A. Weeber , Rob G. L. Van Der Heijde , Hennie J. Völker-Dieben
DOI: 10.1034/J.1600-0420.2002.800406.X
关键词: Ophthalmology 、 Healthy population 、 Radius of curvature (optics) 、 Photography 、 Corneal surface 、 Meridian (perimetry, visual field) 、 Optics 、 Cornea 、 Medicine 、 Scheimpflug principle
摘要: . Purpose: To obtain the shape of posterior corneal surface in a healthy population, using Scheimpflug photography corrected for distortion due to geometry imaging system and refraction anterior surface. Methods: The corneas 83 subjects, ranging age from 16 62 years, were measured vertical meridian photography. aspherical Corneal was also determined conjunction with correction images. Results: average radius 7.87 ± 0.27 mm (SD), while 6.40 ± 0.28 mm (SD). ratio between curvature 0.81 ± 0.02. asphericity surfaces 0.82 ± 0.18 0.62 ± 0.27, respectively. decreased significantly age. posterior/anterior is dependent on 0.98 ± 0.17 at 16 years 0.53 ± 0.30 62 years age. Conclusion: Corrected an appropriate technique measuring surface. changes
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