Open AccessImaging and full-length biometry of the eye during accommodation using spectral domain OCT with an optical switch
Author(s) -
Marco Ruggeri,
Stephen Uhlhorn,
Carolina De Freitas,
Arthur Ho,
Fabrice Manns,
Jean Marie Parel
Publication year - 2012
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.3.001506
Subject(s) - accommodation , cornea , optics , anterior eye segment , lens (geology) , ranging , human eye , optical imaging , materials science , computer science , physics , telecommunications
An optical switch was implemented in the reference arm of an extended depth SD-OCT system to sequentially acquire OCT images at different depths into the eye ranging from the cornea to the retina. A custom-made accommodation module was coupled with the delivery of the OCT system to provide controlled step stimuli of accommodation and disaccommodation that preserve ocular alignment. The changes in the lens shape were imaged and ocular distances were dynamically measured during accommodation and disaccommodation. The system is capable of dynamic in vivo imaging of the entire anterior segment and eye-length measurement during accommodation in real-time.