The entrance pupil of the human eye: A threedimensional model as a function of viewing angle

Cathleen Fedtke, Fabrice Manns, Arthur Ho

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Precise peripheral ocular measurements have become important in vision research. These measurements are influenced by the shape and position of the peripherally observed entrance pupil. A long-held assumption is that its apparent shape is elliptical and is optically centered in its position. Our three-dimensional model shows that as viewing angle increases, the entrance pupil moves forward, tilts and curves towards the observer's direction. Moreover, the tangential pupil size narrows and exhibits asymmetric distortions. Consequently, its shape is non-elliptical and its geometric mid-point departs from the optical center. These findings may have implications on the accuracy of peripheral ocular measurements.

Original languageEnglish (US)
Pages (from-to)22364-22376
Number of pages13
JournalOptics Express
Volume18
Issue number21
DOIs
StatePublished - Oct 11 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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