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Conferences > VSIA > 1996 > MB > MB.4

Telecentric Lens Minimizes Perspective Errors in Measurement of Purkinje Images

J.C. Barry, M.C.M. Dunne, A. Hartmann, and M. Reim

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Abstract

Purkinje image measurements are used for a wide range of clinical and scientific applications, for instance in strabology (Purkinje I and IV Reflection Pattern Evaluation [1,2,3] Hirschberg Test) and in biometry or phakometry. Purkinje images I and IV are typically separated from Purkinje image III axially by 10mm to 15mm. This leads a) to image blurring due to limited depth of field and b) to perspective errors with simultaneous recording when using a conventional lens.

© 1996 Optical Society of America

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