Download Adaptive optics for vision science : principles, practices, by Jason Porter, (Optical engineer); et al PDF

By Jason Porter, (Optical engineer); et al

ISBN-10: 0471679410

ISBN-13: 9780471679417

That includes contributions from the major researchers within the box, Adaptive Optics for imaginative and prescient technological know-how is the 1st booklet committed solely to offering the basics of adaptive optics besides its functional functions in imaginative and prescient technological know-how. the fabric for this booklet stems from collaborations fostered by way of the heart for Adaptive Optics, a consortium of greater than thirty universities, govt laboratories, and Read more...

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Extra info for Adaptive optics for vision science : principles, practices, design, and applications

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Color Perception Is Mediated by a Plastic Neural Mechanism that Is Adjustable in Adults. Neuron. 2002; 35: 783–792. 60. Pokorny J, Smith VC. Evaluation of a Single Pigment Shift Model of Anomalous Trichromacy. J. Opt. Soc. Am. 1977; 67: 1196–1209. 61. Hofer H, Singer B, Williams DR. Different Sensations from Cones with the Same Photopigment. J. Vis. 2005; 5: 444–454. 28 DEVELOPMENT OF ADAPTIVE OPTICS IN VISION SCIENCE 62. Holmgren F. Uber den Farbensinn. Compt rendu du congres periodique international des sciences medicales Copenhagen.

Patient to view a visual acuity chart through adaptive optics. The AO system automatically measures and corrects the aberrations of the patient’s eye and provides a prescription for glasses, contact lenses, or refractive surgery. The phoropter measures the eye’s wave aberration with a Shack–Hartmann wavefront sensor. Wavefront correction in the phoropter is achieved with a microelectromechanical systems (MEMS) deformable mirror. 2 Image Quality Metrics Assessed with Adaptive Optics The effective use of wavefront sensing to refract the eye depends on the ability to transform the wave aberration, which is usually defi ned by several dozen Zernike coefficients, into the values of sphere, cylinder, and axis that generate the best subjective image quality.

The best ophthalmic adaptive optics systems today already approach diffraction-limited imaging using the fully dilated pupil. Modest improvements will no doubt accrue through improved wavefront sensing, better deformable mirror technology, more careful calibration, and optimized control algorithms. Small resolution gains could be achieved by decreasing wavelength, but this approach is problematic because of the eye’s susceptibility to damage at short wavelengths [75]. The most significant gains are likely to arise by combining adaptive optics with new imaging technologies.

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