Bifocal diffraction-refraction intraocular lenses

Koronkevich, V. P.; Lenkova, G. A.; Korolkov, V. P.; Iskakov, I. A.

doi:10.1364/jot.74.000818

Cited by 7 publications

(8 citation statements)

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“…The radius of the central zone can be reduced by using a phase shift It means that the number of zones can't be increased more than on one zone and there is no any significant effect [12][13][14][15][16][17][18][19][20]. 3 rd International conference "Information Technology and Nanotechnology 2017" 21…”

Section: Foreign Lensesmentioning

confidence: 99%

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Methods for creation of diffractive intraocular lenses

Gornostay¹

2017

Collection of Selected Papers of the III International Conference on Information Technology and Nanotechnology

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Hybrid intraocular lenses (IOLs) are diffractive-refractive lenses with pseudoaccomodation. They can imitate the optical system of health eye more precisely, than other types. These lenses have 2-3 or more stable focuses. I proposed a comparison of hybrid IOLs: their shape, their processing, their aberrations and diffractive efficiency. I showed a review of new methods for correction of chromatism and I proposed a method of using volume holograms. I discussed features of possible materials.

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Section: Foreign Lensesmentioning

confidence: 99%

“…A group of scientists in Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences has developed the first Russian IOL [16][17][18][19][20]. A great quality of far and near sight, IOL's independence on pupil.…”

Section: Russian Lensesmentioning

confidence: 99%

Methods for creation of diffractive intraocular lenses

Gornostay¹

2017

Collection of Selected Papers of the III International Conference on Information Technology and Nanotechnology

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“…Application of diffractive elements for vision correction can substantially affect chromatic aberrations of the eye. Artificial crystalline lenses in the form of diffractive-refractive intraocular lenses [4,5] do not increase aberrations of the eye compared to the natural crystalline lens due to an optimal combination of the optical powers and dispersions of components of the intraocular lens and cornea. In the case of a PIOL, aberrations of the eye will depend on the optical powers and dispersions of the PIOL, cornea, and crystalline lens of the eye.…”

Section: Calculations Of Piolsmentioning

confidence: 99%

“…2) the cornea of which was similar to that that we used in the development of an artificial crystalline lens-a diffractive-refractive intraocular lens [4,5]. The parameters of the model were as follows: = 7.8 mm, 0.55 mm are the radii of curvature and the thickness of the cornea, respectively; is the distance from the cornea to the crystalline lens; and is the refractive index of the aqueous humor.…”

Section: Calculations Of Piolsmentioning

confidence: 99%

“…Optical power of a system of two components in the form of lenses, refracting surfaces, or diffractive elements with optical powers and is given by , (4) where and are the front and rear focal distances, respectively; is the distance between the components; and , , and are the refractive indices of the media in front of the system, inside it, and behind it, respectively.…”

Section: Calculations Of Piolsmentioning

confidence: 99%

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On the possibility of application of kinoform and harmonic diffraction structures in constructions of phakic intraocular lenses

Lenkova

2015

Opt. Spectrosc.

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Chromatic aberrations of the eye that arise upon application of diffraction structures such as Fresnel phase lenses with an ordinary (kinoform) or deep (harmonic) profile and diffraction-refraction (hybrid) structures in constructions of phakic (i.e., without lensectomy) intraocular lenses have been investigated analytically. Investigations have been done based on an eye model. It has been shown that, if kinoform (with a profile depth on the order of one wavelength) or hybrid structures are used, chromatic aberrations do not exceed 1 D (i.e., are comparable with aberrations of the ordinary eye) only in a positive range optical powers, which are restricted by the values of +7 and +15 D, respectively. If a harmonic structure is used (with a profile depth on the order of 20 wavelengths), the chromatic aberrations do not exceed 1 D in the entire interval of optical powers of phakic lenses from -25 to +15 D.

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Specific features of measuring the optical power of artificial refractive and diffractive–refractive eye lenses

Lenkova

2016

Opt. Spectrosc.

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Bifocal diffraction-refraction intraocular lenses

Cited by 7 publications

References 0 publications

Methods for creation of diffractive intraocular lenses

Methods for creation of diffractive intraocular lenses

On the possibility of application of kinoform and harmonic diffraction structures in constructions of phakic intraocular lenses

Specific features of measuring the optical power of artificial refractive and diffractive–refractive eye lenses

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