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diffraction

Gatinel D. The multifocalite for Dummies. Ophthalmological realities, March 2017

This article is devoted to the simplified description of the optical principles to increase the multifocalite for the compensation of presbyopia. The concerned eyes can benefit from refractive or Diffractive, multifocal technologies whose common principles govern in cataract surgery, refractive surgery and contactology multifocal solution design. Download: Gatinel [...]

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Comparison of 3 Diffractive IOLs in 3 Wavelengths Bifocal / Trifocal/EDOF. Gatinel, Pagoulle, Gobin, Loicq J L C D. ASCRS meeting, 2016, May 10th

This paper focuses on the objective comparison of three premium intraocular lenses (IOLs): one said monofocal achromatic with extended depth of focus (EDOF), one diffractive bifocal, trifocal one rosea. All IOLs are made with year face material.     Abstract: Purpose To describe the optical performance of 3 types of face diffractive intraocular [...]

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Gatinel D, Loicq J. Clinically Relevant Optical Properties of Bifocal, Trifocal, and Extended Depth of Focus Intraocular Lenses. J Refract Surg. 20161; 32 (4): 273-80

Gatinel D, Loicq J. Clinically Relevant Optical Properties of Bifocal, Trifocal, and Extended Depth of Focus Intraocular Lenses. J Refract Surg. 20161; 32 (4): 273-80 (in French below) See here has slide show regarding some of the following material Extended depth of focus (EDoF) IOLs are designed to provide better near vision than monofocal or accommodating IOLs, [...]

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Light streaks / stripes of light

"Doctor, since I had this ocular surgery, when I go outside at night I see streams and long streaks of light across the outdoor lights everywhere I look." What is that? "This page aims at bringing some elements to better address this issue. (In french below) Definition of light streaks Light streaks are a [...]

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Gatinel D, Saad A, Guilbert E, Angolan R. Simultaneous Correction of Unilateral Rainbow Glare and Residual Astigmatism by Undersurface Flap Photoablation After Femtosecond Laser-Assisted LASIK. J Refract Surg, 2015

Rainbow glare is a rare complication related to diffraction of light by the impacts of the laser femtosconde at the level of the corneal stroma. This article reports the first surgical correction of a complication of 'rainbow glare' after femto LASIK with femtosecond FS200 laser. It was conducted by correcting a direct residual astigmatism at the level [...]

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Gatinel D, Saad A, Guilbert E, Angolan H. Unilateral Rainbow Glare After Uncomplicated Femto-LASIK Using the FS-200 Femtosecond Laser. J Cataract Refract Surg, Apr 2013

This article reports the first described case of 'rainbow glare' unilateral after femto LASIK with laser Wavelight FS 200, for which a correlation histo pathological vivo was established thanks to the (HRT with corneal module) confocal microscopy. Rainbow glare is an undesirable optical effect related to the diffraction of the light [...]

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Rainbow glare

Rainbow glare (glare in Rainbow) is a rare undesirable optical effect of LASIK all laser (laser femtosecond). There originated the bright diffraction pattern of the network created at the back of the flap by the impacts of the femtosecond laser-induced.  It was described in 2008 by Krueger and [...]

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Huygens (principle of)

The Huygens principle concerns the propagation of light in the form of transmitted wavelets and re issued successively. It's the astronomer and Dutch mathematician Christian Huygens (1629-1695), that must be the first theorization of the wave front. It was inspired by the properties of mechanical waves, which he took out the principle of the waves 'envelopes', [...]

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Diffraction

Definition, General light diffraction is an optical phenomenon related to the wave properties of light: the effects of diffraction can be explained by geometrical optics. Diffraction occurs when light waves pass through a pupil or encounter an obstacle. At the edges of these light waves are "diffractées", issued in [...]

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