SBIR and STTR Success Story for
Sarver and Associates, Inc.

(Information Posted/Updated on 05/20/2013)

Sarver and Associates, Inc.
131 Phillips Road
Carbondale, IL  62902

Contact:    Ed Sarver
Phone:      618-529-4225
E-mail:      ejsarver@aol.com

Project Title:  Scanning ocular Aberration Measurement (SAM)
Related Award(s):  R44 EY015008
Technology Developed:
We have developed algorithms and software for: (1) calculating the ocular wave aberrations from a Hartmann screen wavefront sensor that does not require spots detection via image processing thus providing the possibility of more robust measurements from a Hartmann sensor; and (2) evaluating a Zernike expansion representation of wavefront aberrations that is about 100 to 1000 times faster than direct evaluation of the Zernike polynomials. This evaluation algorithm applies to optimization tasks, map displays, point spread function calculations, and retinal image simulations. We have also developed a Hartmann screen sensor based upon wave optics that is especially suited to ocular aberration measurement and is about 1/10th the cost of a traditional Shack-Hartmann micro lens array.

Key Words:  Low-cost Hartmann screen, Ocular wave aberrations, Fast Zernike evaluation, Spatial demodulation.
Uses of Technology/Products/Service:
The algorithms, software and Hartmann screen wavefront sensor have been integrated into a commercial combination corneal topographer and ocular aberrometer, the Discovery, which we will be selling through Innovative Visual Systems, Elmhurst, IL. We further intend to reuse this technology in another combination system under development which includes anterior segment optical coherence tomography.