Overview

First used in astronomy to correct for blur in ground-based telescopes due to atmospheric turbulence, adaptive optics is now used in vision science to provide diffraction limited imaging of individual retinal cells and to determine the effect of ocular aberrations on the visual acuity and accommodation control. This book provides an introduction to adaptive optics as applied to vision science. The aim is to make the topics tangible for someone completely new to the field, regardless of their discipline. It covers all main concepts including how to develop a basic system from the ground up and also includes information on the current state-of-the-art systems.

Full Product Details

Author:   Karen Hampson
Publisher:   Taylor & Francis Inc
Imprint:   Productivity Press
ISBN:  

9781498761529

ISBN 10:   1498761526
Pages:   200
Publication Date:   01 January 2021
Audience:   College/higher education ,  Professional and scholarly ,  Postgraduate, Research & Scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   Not yet available  
This item is yet to be released. You can pre-order this item and we will dispatch it to you upon its release.

Table of Contents

Introduction. Origins of Adaptive Optics. Astronomy and Adaptive Optics. Adaptive Optics and the Eye. The Eye as an Adaptive Optics System. Imperfections in the Eye's Adaptive Optics System. History of Adaptive Optics Applied to the Eye. Summary. Chapter 2: Designing and Building a System for Vision Science. Optical Design of a Basic System. The Importance of the Pupil. Relay Telescopes. Optical Components. Field of View and Light Loss. Removing Reflections. Light Sources. Choosing the wavelength. Choosing the type of light source. Safety Considerations. Mounting and Aligning a System. Mounting the Optics. Aligning the System. Stabilising the Subject. Summary. Chapter 3: Measuring the Eye's Aberrations. Description of the Eye's Aberrations. Rays to Wavefronts. Zernike Polynomials. Temporal Properties. Shack-Hartmann Sensor. How it Works. Determining Spot Locations. Choosing the Shack-Hartmann Components. Obtaining the Zernike Coefficients. Beyond Conventional Shack-Hartmanns. Other Types of Sensors. Curvature Sensor. Pyramid Sensor. Wavefront Sensorless Systems. Summary. Chapter 4: Correcting the Eye's Aberrations. How Correctors Work. Phase Conjugation. Factors to Consider when Choosing a Corrector. Deformable Mirrors. Segmented. Continuous. Liquid Crystals. Other Types of Corrector. Correctorless Systems. Increasing System Correction Capabilities. Removing Defocus and Astigmatism. Stroke Amplification. Summary. Chapter 5: Controlling an Adaptive Optics System. Open-Loop versus Closed-Loop Systems. Obtaining the Corrector Signals. Via the Slopes. Via the Zernike Polynomials. Time Delays and their Consequence. Origin of Time Delays. Instability. The Integral Controller. Why it is Used. Doing a full Correction. Manipulating the Zernike Coefficients. Measuring System Performance. Writing the Software. Summary. Chapter 6: Retinal Imaging with Adaptive Optics. Anatomy of the Retina. Instruments and their Application. Flood Illumination Ophthalmoscope. Scanning Laser Ophthalmoscope. Optical Coherence Tomographer. Multiconjugate Systems. Multimodal Instruments. Summary. Chapter 7: Vision Manipulation with Adaptive Optics. Limits of Visual Acuity. Accommodation. Dual Channel Monocular System. Binocular System. Visual Simulation and Blur Adaptation. Summary. Chapter 8: The Future. Summary of what we can Currently Achieve. Limits and how they can be Overcome. Appendix. Laser Safety calculationsTroubleshooting.

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Author Information

Karen Hampson is a researcher in the Bradford School of Optometry and Vision Science at Bradford University. Her primary area of research is the application of adaptive optics to vision science. She has worked in this field for 15 years and developed several adaptive optics systems from the ground up. Her interest in this area began with her PhD at Imperial College, which she completed in 2004. Her current projects include retinal imaging for detecting disease at the single cell level, and investigating how the aberrations of the eye influence focusing control in myopia. She is also secretary of the Institute of Physics Medical Physics Group and a committee member of the Optical Group.

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