We have developed a prototype apparatus for real-time closed-loop measurement and correction of aberrations in the human eye. The apparatus uses infrared light to measure the wave-front aberration at 25 Hz with a Hartmann–Shack sensor. Defocus is removed by a motorized optometer, and higher-order aberrations are corrected by a membrane deformable mirror. The device was first tested with an artificial eye. Correction of static aberrations takes approximately five iterations, making the system capable of following aberration changes at 5 Hz. This capability allows one to track most of the aberration dynamics in the eye. Results in living eyes showed effective closed-loop correction of aberrations, with a residual uncorrected wave front of 0.1µm for a 4.3-mm pupil diameter. Retinal images of a point source in different subjects with and without adaptive correction of aberrations were estimated in real time. The results demonstrate real-time closed-loop correction of aberration in the living eye. An application of this device is as electro-optic “spectacles” to improve vision.

© 2001 Optical Society of America

[Optical Society of America ]

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Improvement in retinal image quality with dynamic correction of the eye's aberrations (OE)
• Visual performance after correcting the monochromatic and chromatic aberrations of the eye (JOSAA)
• Membrane deformable mirror for adaptive optics: performance limits in visual optics (OE)
• Benefit of higher closed�??loop bandwidths in ocular adaptive optics (OE)
• Study of the tear topography dynamics using a lateral shearing interferometer (OE)

Related Conference Papers

• Generalization of the Zernike Polynomials to a Discretely Sampled Cartesian Grid: Application to Ophthalmic Surfaces
• Progress in Developing the 2nd Generation Adaptive Optics Scanning Laser Ophthalmoscope (AOSLO)
• Contributions to the Optical Quality of the Eye: Implications for "Perfect" Optical Correction
• Double-pass measurements of retinal image quality: a review of the theory, limitations and results
• Longitudinal evaluation of optical aberrations following laser in situ keratomileusis (LASIK) surgery