RU2352309C1 - Method of laser excision of pterygium - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention concerns medicine, namely, ophthalmosurgery. A pterygium head is influenced by an impulsive laser beam through a probe with "open fiber". Thus influence is carried out with a wavelength of laser radiation - 810 nanometers, power of laser radiation - 2.5-3.0 W, frequency of following of impulses 0.1-0.4^-1 sec, duration of impulse - 0.15-0.2 seconds.

EFFECT: increase of the efficiency of treatment of pterygium at the expense of traumatism decrease to operation, asepticity, seamless carrying out of operation, and also at the expense of reduction of quantity of relapses of pterygium.

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Description

The invention relates to medicine, and more particularly to ophthalmic surgery.

A known method of removing pterygium using a blade. However, this method has a significant drawback - it is not effective in the treatment of pterygium.

The technical problem solved by the invention is to increase the effectiveness of treatment of pterygium by reducing the invasiveness of the operation, asepticity, seamless operation, as well as by reducing the number of relapses of pterygium.

The specified technical problem is solved by the fact that in the method of laser removal of pterygium, consisting of exposure to a pulsed laser beam through a probe with an “open fiber” optical fiber (cleaned optical fiber with a cut-off flat end - Official site of the ALKOM MEDICA company www.laserstar.ru, section fiber-optic instruments and tools, as well as Petrishchev NN, Sokolovsky NV "The use of semiconductor lasers in dermatology and cosmetology" A manual for doctors. St. Petersburg 2004. Pages 8, 35.) on the head of the pterygium, they produce sawing, P about the direction of the laser radiation, the probe’s movement at the attachment point of the pterygium head, the laser radiation wavelength being 810 nm, the laser power being 2.5-3.0 W, the pulse repetition rate being 0.1-0.4 s ^-1 , and the pulse duration being 0.15- 0.2 sec

The method is illustrated in the drawing, where

1 - pterygium;

2 - probe with an "open fiber".

Before surgery, 0.4% inocaine is instilled into the eye, an eyelid is inserted. The pterygium (1) is held with tweezers (not shown) and sawing is made at the place of attachment of the pterygium; in the direction of the laser radiation, the probe is moved with an "open fiber" (2) laser beam. Under the conjunctiva, an antibiotic is administered. The dressing is not applied.

The method is illustrated by the following examples.

Example 1. Patient K., 62 years old. Primary diagnosis: Pterygium of the right eye. Visual acuity OD = 0.8. Operated by the proposed method. The surface of the cornea on the operated eye is smooth, no relapse. Visual acuity of 0.8. The observation time is 6 months.

Example 2. Patient S., 45 years old. Primary diagnosis: Pterygium of both eyes. Visual acuity OD = 1.0, OS = 1.0. Operated by the proposed method. After 3 months - no relapse, visual acuity OD = 1.0, OS = 1.0.

The application of the proposed method can significantly increase the effectiveness of the treatment of pterygium.

Claims (1)

The method of laser removal of pterygium by applying a pulsed laser beam through a probe with an "open fiber" to the head of the pterygium, characterized in that the exposure is carried out with a laser wavelength of 810 nm, a laser radiation power of 2.5-3.0 W, frequency pulse repetition 0.1-0.4 ^-1 s, pulse duration 0.15-0.2 s.