Change in corneal shape and corneal wave-front aberrations with accommodation | Zendy

Ji C. He | Zendy; Jane Gwiazda | Zendy; Frank Thorn | Zendy; Richard Held | Zendy; Walter Huang | Zendy

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Change in corneal shape and corneal wave-front aberrations with accommodation

Author(s) -

Ji C. He,

Jane Gwiazda,

Frank Thorn,

Richard Held,

Walter Huang

Publication year - 2003

Publication title -

journal of vision

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.126

H-Index - 113

ISSN - 1534-7362

DOI - 10.1167/3.7.1

Subject(s) - accommodation , wavefront , corneal topography , spherical aberration , flattening , optics , ophthalmology , vertex (graph theory) , radius of curvature , front (military) , cornea , aberrations of the eye , coma (optics) , curvature , physics , medicine , optometry , mathematics , geometry , mean curvature , lens (geology) , astronomy , graph , mean curvature flow , meteorology , discrete mathematics

This study investigated the change in corneal curvature and corneal wave-front aberrations with accommodation. The corneal curvature of the right eyes of 12 young adults was measured using a corneal topography system, while subjects fixated far (4.0 m) and near (0.2 m) targets with their left eyes. Convergence was controlled. Both the mean corneal radius at the vertex and the shape parameter significantly increased from the far to the near viewing condition. No significant change in root mean square of wave-front aberrations with accommodation was observed for the group, but there was individual variation in the change of wave-front aberration. A significant mean change for the group in both x-axis coma and spherical aberration was found. The change in corneal surface with accommodation suggests an increase in peripheral curvature with flattening at the vertex.

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