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Open AccessArticle

Infrared Retinoscopy

Center for Laser Applications, The University of Tennessee Space Institute, 411 B. H. Goethert Parkway, TN 37288, USA
Wang Vision Institute, 1801 West End Ave, Ste 1150, Nashville, TN 37203, USA
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Photonics 2014, 1(4), 303-322;
Received: 6 September 2014 / Revised: 29 September 2014 / Accepted: 30 September 2014 / Published: 3 October 2014
(This article belongs to the Special Issue Optics and Technologies for Ophthalmology and Visual Science)
PDF [2467 KB, uploaded 3 October 2014]


Infrared RetinoscopyRetinoscopy could be a more effective and versatile clinical tool in observing a wide range of ocular conditions if modifications were made to overcome the inherent difficulties. In this paper, a laboratory infrared retinoscope prototype was constructed to capture the digital images of the pupil reflex of various types of eye conditions. The captured low-contrast reflex images due to intraocular scattering were significantly improved with a simple image processing procedure for visualization. Detections of ocular aberrations were demonstrated, and computational models using patients’ wavefront data were built to simulate the measurement for comparison. The simulation results suggest that the retinal stray light that is strongly linked to intraocular scattering extend the detection range of illuminating eccentricity in retinoscopy and make it more likely to observe ocular aberrations. View Full-Text
Keywords: retinoscopy; photorefraction; aberration retinoscopy; photorefraction; aberration

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Chen, Y.-L.; Shi, L.; Lewis, J.W.L.; Wang, M. Infrared Retinoscopy. Photonics 2014, 1, 303-322.

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