The creation of a corneal incision with a femtosecond laser

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BACKGROUND: The cutting action of a femtosecond laser (FS-laser) on the corneal tissue is performed using a photodestructive effect. FS-laser technology is used in many different areas of corneal surgery, and studying this effect is an actual issue.

AIM: To evaluate the surface of the corneal incision created by a FS-laser (experimental study).

MATERIALS AND METHODS: 20 porcine eyes were divided into two groups (FS-laser and keratome). The corneal tissue surface in the area of contact between two lips of the incision was visualized by electron microscopy.

RESULTS: In all cases, we received a full-thickness incisions through the cornea. Images obtained by electron microscopy showed regular surface, no signs of thermal or mechanical damage to the corneal structure.

CONCLUSIONS: The FS-laser is used as a microscopic scalpel in surgery. The precision cutting process is performed by mechanical forces generated by photodestruction by expanding cavitation bubbles.

作者简介

Yulduz Nizametdinova

Saint Petersburg State Hospital No. 2

编辑信件的主要联系方式.
Email: yulduzik55@gmail.com
ORCID iD: 0000-0002-6789-5780
SPIN 代码: 7482-5163

Ophthalmologist

俄罗斯联邦, Saint Petersburg

Yuri Takhtaev

I.P. Pavlov First St. Petersburg State Medical University

Email: ytakhtaev@hotmail.com

Dr. Sci. (Med.), Professor, Professor Yu.S. Astakhov Ophthalmology Department with Clinic

俄罗斯联邦, Saint Petersburg

参考

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2. Fig. 1. Laser optical breakdown: plasma → expansion of plasma → cavitation cavity → gas bubble

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3. Fig. 2. The surface of the porcine cornea (×100) after FS laser

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4. Fig. 3. The surface of the porcine cornea (×100) after keratome

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版权所有 © Nizametdinova Y., Takhtaev Y., 2022

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