Journal ArticleDOI
Effect of rotation and translation on the expected benefit of an ideal method to correct the eye’s higher-order aberrations
TLDR
The results in a keratoconic subject showed that important benefits are obtained despite decentrations in highly aberrated eyes, and provided practical rules to implement a selective correction depending on the amount of decentration.Abstract:
An ideal correcting method, such as a customized contact lens, laser refractive surgery, or adaptive optics, that corrects higher-order aberrations as well as defocus and astigmatism could improve vision The benefit achieved with this ideal method will be limited by decentration To estimate the significance of this potential limitation we studied the effect on image quality expected when an ideal correcting method translates or rotates with respect to the eye’s pupil Actual wave aberrations were obtained from ten human eyes for a 73-mm pupil with a Shack–Hartmann sensor We computed the residual aberrations that appear as a result of translation or rotation of an otherwise ideal correction The model is valid for adaptive optics, contact lenses, and phase plates, but it constitutes only a first approximation to the laser refractive surgery case where tissue removal occurs Calculations suggest that the typical decentrations will reduce only slightly the optical benefits expected from an ideal correcting method For typical decentrations the ideal correcting method offers a benefit in modulation 2–4 times higher (15–2 times in white light) than with a standard correction of defocus and astigmatism We obtained analytical expressions that show the impact of translation and rotation on individual Zernike terms These calculations also reveal which aberrations are most beneficial to correct We provided practical rules to implement a selective correction depending on the amount of decentration An experimental study was performed with an aberrated artificial eye corrected with an adaptive optics system, validating the theoretical predictions The results in a keratoconic subject, also corrected with adaptive optics, showed that important benefits are obtained despite decentrations in highly aberrated eyesread more
Citations
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Investigative Ophthalmology and Visual Science
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Pupil location under mesopic, photopic, and pharmacologically dilated conditions.
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Corneal optical aberrations and retinal image quality in patients in whom monofocal intraocular lenses were implanted.
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Wavefront-optimized ablation profiles: theoretical background.
TL;DR: Wavefront‐optimized ablation profiles provide a simple method to precompensate for the expected 4th‐order spherical aberration and higher‐order astigmatism in the average eye.
Patent
Methods and Systems for Tracking a Torsional Orientation and Position of an Eye
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References
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TL;DR: The second edition of this respected text considerably expands the original and reflects the tremendous advances made in the discipline since 1968 as discussed by the authors, with a special emphasis on applications to diffraction, imaging, optical data processing, and holography.
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Zernike polynomials and atmospheric turbulence
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Supernormal vision and high-resolution retinal imaging through adaptive optics
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Objective measurement of wave aberrations of the human eye with the use of a Hartmann-Shack wave-front sensor
TL;DR: It is shown that with this method, using a Hartmann-Shack wave-front sensor, one can obtain a fast, precise, and objective measurement of the aberrations of the eye.
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F. W. Campbell,R. W. Gubisch +1 more
TL;DR: Optical quality of the eye was measured at eight pupil sizes between 1·5 and 6·6 mm diameter by recording the faint light emerging from the eye; this light was reflected from the bright image of a thin line on the fundus.