Characterization and Operation of Liquid Crystal Adaptive Optics Phoropter
Adaptive optics (AO), a mature technology developed for astronomy to compensate for the effects of atmospheric turbulence, can also be used to correct the aberrations of the eye. The classic phoropter is used by ophthalmologists and optometrists to estimate and correct the lower-order aberrations of the eye, defocus and astigmatism, in order to derive a vision correction prescription for their patients. An adaptive optics phoropter measures and corrects the aberrations in the human eye using adaptive optics techniques, which are capable of dealing with both the standard low-order aberrations and higher-order aberrations, including coma and spherical aberration. High-order aberrations have been shown to degrade visual performance for clinical subjects in initial investigations. An adaptive optics phoropter has been designed and constructed based on a Shack-Hartmann sensor to measure the aberrations of the eye, and a liquid crystal spatial light modulator to compensate for them. This system should produce near diffraction-limited optical image quality at the retina, which will enable investigation of the psychophysical limits of human vision. This paper describes the characterization and operation of the AO phoropter with results from human subject testing.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15004705
- Report Number(s):
- UCRL-JC-151638; TRN: US200320%%466
- Resource Relation:
- Journal Volume: 5169; Conference: SPIE Annual Meeting 2003 Adaptive Optics Applications, San Diego, CA (US), 08/03/2003--08/09/2003; Other Information: PBD: 5 Feb 2003
- Country of Publication:
- United States
- Language:
- English
Similar Records
Compact MEMS-based Adaptive Optics Optical Coherence Tomography for Clinical Use
Adaptive optics ophthalmologic systems using dual deformable mirrors