Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Adaptive optics scanning laser ophthalmoscope using a micro-electro-mechanical (MEMS) deformable mirror

[+] Author Affiliations
Yuhua Zhang, Siddharth Poonja, Austin Roorda

Univ. of California, Berkeley

Proc. SPIE 6138, Ophthalmic Technologies XVI, 61380Z (March 07, 2006); doi:10.1117/12.646934
Text Size: A A A
From Conference Volume 6138

  • Ophthalmic Technologies XVI
  • Fabrice Manns; Per G. Söderberg; Arthur Ho
  • San Jose, CA | January 21, 2006

abstract

A MEMS deformable mirror (DM)-based new generation adaptive optics scanning laser ophthalmoscope (AOSLO) has been developed for in-vivo microscopic imaging of the living human retina. With the miniaturized optical aperture of a μDMS-MultiTM MEMS DM made by Boston Micromachines Corporation (Watertown, MA), we were able to confine a compact and robust optical system to a mobile 30"×30" breadboard while keeping the system aberrations diffraction-limited over an imaging field of view up to 3×3 degrees. A customized Shack-Hartmann wavefront sensor was devised to facilitate the MEMS DM based adaptive optics (AO) system. The ocular aberration is compensated over a 6mm pupil based upon a modal wavefront correction strategy. The AO correction is done for both ingoing and outgoing paths of the scanning laser ophthalmoscope. After AO correction, the root mean square wave aberration is reduced to less than 0.1μm for most eyes. The lateral resolution is effectively enhanced and the images reveal clear cone mosaic near the foveal center. The significant increase of the throughput at the confocal pinhole allows for a confocal pinhole whose diameter is less than the Airy disc of the collection lens, thereby fully exploiting the axial resolution capabilities of the system. The MEMS DM as well as its successful application represents the most significant technological breakthrough of this new generation AOSLO.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Yuhua Zhang ; Siddharth Poonja and Austin Roorda
"Adaptive optics scanning laser ophthalmoscope using a micro-electro-mechanical (MEMS) deformable mirror", Proc. SPIE 6138, Ophthalmic Technologies XVI, 61380Z (March 07, 2006); doi:10.1117/12.646934; http://dx.doi.org/10.1117/12.646934


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.