MATHEMATICAL MODELS OF LASER CORRECTION OF MYOPIA BY LASIK, SMILE AND PRK METHODS

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MATHEMATICAL MODELS OF LASER CORRECTION OF MYOPIA BY LASIK, SMILE AND PRK METHODS. / Bauer, S. M.; Venatovskaya, L. A.; Kachanov, A. B.; Kornikov, V. V.

In: Russian Journal of Biomechanics, Vol. 25, No. 4, 2021, p. 317-322.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{bc7853cd4a51475da9711c1f187679e5,

title = "MATHEMATICAL MODELS OF LASER CORRECTION OF MYOPIA BY LASIK, SMILE AND PRK METHODS",

abstract = "The stress-strain state of the human eye, which cornea in its apexis is weakened after myopia surgical correction, is studied. The elastic system “corneasclera” is presented as two joint transversely isotropic spherical segments with nonuniform thickness, different radii of curvature and biomechanical properties. The cornea is modeled as multilayer shell. The simulated eye shell is filled with an incompressible fluid. Mathematical models of three different laser vision correction surgeries: small incision lenticule extraction (SMILE), laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK), are developed in the engineering simulation software ANSYS Inc. The diameter and thickness of the lenticular in SMILE, the diameter of the ablation zone and the maximum thickness (depth) of the corneal ablation in LASIK and PRK define optical surgery areas and are considered as comparable parameters. Finite element simulation shows that after LASIK vision correction the apex of the cornea has a greater displacement and the stress increase greater in the stroma than after SMILE and PRK. The influence of the multilayer structure of the cornea and elastic characteristics of the sclera on the biomechanics of the eye as a result of vision correction is shown",

keywords = "Adjoint transversely isotropic shells, Intraocular pressure, Laser vision correction surgeries, Lasik, Prk, Smile",

author = "Bauer, {S. M.} and Venatovskaya, {L. A.} and Kachanov, {A. B.} and Kornikov, {V. V.}",

year = "2021",

doi = "10.15593/RJBiomech/2021.4.02",

language = "English",

volume = "25",

pages = "317--322",

journal = "РОССИЙСКИЙ ЖУРНАЛ БИОМЕХАНИКИ",

issn = "1812-5123",

publisher = "Perm National Research Polytechnic University",

number = "4",

}

RIS

TY - JOUR

T1 - MATHEMATICAL MODELS OF LASER CORRECTION OF MYOPIA BY LASIK, SMILE AND PRK METHODS

AU - Bauer, S. M.

AU - Venatovskaya, L. A.

AU - Kachanov, A. B.

AU - Kornikov, V. V.

PY - 2021

Y1 - 2021

N2 - The stress-strain state of the human eye, which cornea in its apexis is weakened after myopia surgical correction, is studied. The elastic system “corneasclera” is presented as two joint transversely isotropic spherical segments with nonuniform thickness, different radii of curvature and biomechanical properties. The cornea is modeled as multilayer shell. The simulated eye shell is filled with an incompressible fluid. Mathematical models of three different laser vision correction surgeries: small incision lenticule extraction (SMILE), laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK), are developed in the engineering simulation software ANSYS Inc. The diameter and thickness of the lenticular in SMILE, the diameter of the ablation zone and the maximum thickness (depth) of the corneal ablation in LASIK and PRK define optical surgery areas and are considered as comparable parameters. Finite element simulation shows that after LASIK vision correction the apex of the cornea has a greater displacement and the stress increase greater in the stroma than after SMILE and PRK. The influence of the multilayer structure of the cornea and elastic characteristics of the sclera on the biomechanics of the eye as a result of vision correction is shown

AB - The stress-strain state of the human eye, which cornea in its apexis is weakened after myopia surgical correction, is studied. The elastic system “corneasclera” is presented as two joint transversely isotropic spherical segments with nonuniform thickness, different radii of curvature and biomechanical properties. The cornea is modeled as multilayer shell. The simulated eye shell is filled with an incompressible fluid. Mathematical models of three different laser vision correction surgeries: small incision lenticule extraction (SMILE), laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK), are developed in the engineering simulation software ANSYS Inc. The diameter and thickness of the lenticular in SMILE, the diameter of the ablation zone and the maximum thickness (depth) of the corneal ablation in LASIK and PRK define optical surgery areas and are considered as comparable parameters. Finite element simulation shows that after LASIK vision correction the apex of the cornea has a greater displacement and the stress increase greater in the stroma than after SMILE and PRK. The influence of the multilayer structure of the cornea and elastic characteristics of the sclera on the biomechanics of the eye as a result of vision correction is shown

KW - Adjoint transversely isotropic shells

KW - Intraocular pressure

KW - Laser vision correction surgeries

KW - Lasik

KW - Prk

KW - Smile

UR - http://www.scopus.com/inward/record.url?scp=85125065927&partnerID=8YFLogxK

U2 - 10.15593/RJBiomech/2021.4.02

DO - 10.15593/RJBiomech/2021.4.02

M3 - Article

AN - SCOPUS:85125065927

VL - 25

SP - 317

EP - 322

JO - РОССИЙСКИЙ ЖУРНАЛ БИОМЕХАНИКИ

JF - РОССИЙСКИЙ ЖУРНАЛ БИОМЕХАНИКИ

SN - 1812-5123

IS - 4

ER -

ID: 92119724