Measurement and correction of transverse chromatic offsets for multi-wavelength retinal microscopy in the living eye

Biomed Opt Express. 2012 Sep 1;3(9):2066-77. doi: 10.1364/BOE.3.002066. Epub 2012 Aug 13.

Abstract

A special challenge arises when pursuing multi-wavelength imaging of retinal tissue in vivo, because the eye's optics must be used as the main focusing elements, and they introduce significant chromatic dispersion. Here we present an image-based method to measure and correct for the eye's transverse chromatic aberrations rapidly, non-invasively, and with high precision. We validate the technique against hyperacute psychophysical performance and the standard chromatic human eye model. In vivo correction of chromatic dispersion will enable confocal multi-wavelength images of the living retina to be aligned, and allow targeted chromatic stimulation of the photoreceptor mosaic to be performed accurately with sub-cellular resolution.

Keywords: (110.1080) Active or adaptive optics; (130.2035) Dispersion compensation devices; (170.5810) Scanning microscopy; (330.5510) Psychophysics; (330.7327) Visual optics, ophthalmic instrumentation.