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6574

EFFECT OF ND-YAG LASER ON DIELECTRIC PROPERTIES OF RABBIT EYE

Article

Last updated: 03 Jan 2025

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Physics

Abstract

This paper is an attempt to investigate the effect of neodymium yag ( Nd:YAG) laser exposure during eye treatment (1064nm,  0.01w/cm2, spot size 450µm, duration time 9 n sec., 30 pulses per sec  and time exposure, 0.25 (group A) and 0.1 sec (group B)). We intend to measure the dielectric properties of eye tissues and correlate them with structure. Values of the relative permittivity, dielectric loss and conductivity έ, ε'' & s, are measured for various rabbit ocular tissues (cornea, lens and retina) at the frequency range 100Hz -100kHz before and after laser exposure. The aim of this work is to test the functional state of the eye tissues exposed to laser beam of the same intensity and duration as that used in lens posterior capsulotomy after cataract surgery, by the use of dielectric method. We tried to adapt the physical conditions surrounding the exposed eye during exposure. The obtained results showed that, for the whole eye, as well as for all eye tissues, both values of permittivity and conductivity showed remarkable decreases than normal values, immediately after laser exposure, for both group A & B and this reduction begins to diminish with days after exposure approaching normal values approximately after 8 days of exposure.  It is evident that, although laser interacts with all cell membrane structures responsible for transport phenomena leading to changes in the dielectric properties, this interaction depends on the tissue type, special function of membrane and magnitude of exposure power and time of exposure which must accurately considered during choosing the laser treatment conditions and the tissue to be treated.

DOI

10.21608/absb.2013.6574

Keywords

Nd-YAG laser, dielectric, RABBIT EYE

Authors

First Name

M.S

Last Name

TALAAT.

MiddleName

-

Affiliation

Department of Physics, , Faculty of Science, Ain Shams University, Egyp

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City

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Orcid

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First Name

SAMIRA. M.

Last Name

SALLAM

MiddleName

-

Affiliation

Department of Physics, Faculty of Science, Benha University, Benha, Egypt

Email

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City

-

Orcid

-

First Name

SOHAIR

Last Name

NEGM

MiddleName

-

Affiliation

Department of Mathematics and Physics, Faculty of engineering, Benha University, , Egypt

Email

-

City

-

Orcid

-

First Name

FATMA.

Last Name

METAWE

MiddleName

-

Affiliation

Department of Mathematics and Physics, Faculty of engineering, Benha University, , Egypt

Email

-

City

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Orcid

-

First Name

HORIA.

Last Name

F

MiddleName

-

Affiliation

Department of Mathematics and Physics, Faculty of engineering, Benha University, , Egypt

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-

City

-

Orcid

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Volume

24

Article Issue

Issue 1-B

Related Issue

1324

Issue Date

2013-06-01

Receive Date

2013-01-19

Publish Date

2013-06-01

Page Start

17

Page End

27

Print ISSN

1110-2535

Online ISSN

2636-3305

Link

https://absb.journals.ekb.eg/article_6574.html

Detail API

https://absb.journals.ekb.eg/service?article_code=6574

Order

18

Type

Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

EFFECT OF ND-YAG LASER ON DIELECTRIC PROPERTIES OF RABBIT EYE

Details

Type

Article

Created At

22 Jan 2023