SU1448436A1 - Method of restoring vision in disturbances of optic nerve - Google Patents

Abstract

The invention relates to medicine, more specifically to neuro-ophthalmology, h4 voyage and clinical nitrophysiology, intended for the treatment of patients with lesions of the optic nerves. The purpose of the invention is to reduce traumatic injuries. For this, ophthalmologic or electrophthalmologic determination is made. preserved areas of visual nerve. Disk metal electrodes F 3–10 mm are superimposed on the eyelids and the orbit of the eye, through which they are subjected to a series of bi-phase rectangular current pulses, the action starts from the most safe sections. Pulse duration 5–10 ms; pulse frequency in a pack of 10-50 Hz; 1-2 second interval; the number of pulses in a pack of 2-7; The duration of the series is 60-240 s. Course duration 10-15 seans. The method allows not to introduce special electrodes into the optic nerve surgically, which significantly reduces the invasiveness and expands the indications for clinical use.

Description

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about

The invention relates to nadicine, more specifically, to neuro-ophthalmology, neurology, and clinical neurophysiology, and can be used to treat patients with visual impairments.

The purpose of the invention is to reduce traumatic ty.

The essence of the method is as follows.

In a patient with damage to the visual nerves, the preserved areas of the optic Nerve are ophthalmologically or electro-ophthalmologically determining. Then, metal disk electrodes with a diameter of 3–10 mm are superimposed on the eyelids and the orbit of the eye, through which they are carried by means of a series of bi-phase rectangular current pulses, which begin with the most intact parts. The parameters of treatment: electrical stimulations vary in the range: pulse duration from 5 to 10 ms | the pulse frequency in a pack is from 10 to 50 Hz, the interparticle interval is –2 ° C; the number of pulses in a pack - 2-7; series duration - 60-2AO s. Course duration is 10-15 sessions.

An example of a specific description is neither. .

Patient B., 48 years old, was admitted to the Kli. Kiku NIIEM in the Department of Neurosurgery and diagnosis - that of the optic faith after severe craniocerebral trauma.

In a car accident two years ago, I suffered a traumatic brain injury, a fracture of the vault and the base of the skull, a brain contusion, a subarachnoid hemorrhage, an injury to the optic nerve, and X1 anemia. got absorbable and c. .pearing therapy.

Upon receipt, visual acuity in the right eye of OsOl with correction, in the left eye of O. Direct light; the right eye is alive, the left eye is absent. The optic nerve discs are pale, but on the right the left hue is hidden in the nasal half. The disc boundaries are clear, the vessels are kije. Retina without ichagovyh changes i yo eyesight: on the right smoothly a narrow area is preserved in the upper-bearing quadrant of the Eleutrochelum in the right eye below

norm and is 9 V, on the left eye is not detected.

According to the character and nature of the lesion, the patient is shown a neurosurgical operation - decompression and neurosis of the optic nerves with the introduction of electrodes to conduct a course of direct electrical stimulation of the optic nerves. However, in view of the available contraindications on the somatic status of the neurosurgical operation to the patient, 19.03. In '85, daily sessions of therapeutic electrical stimulation were started through patch electrodes.

The first series of electrical actions through a disk electrode with a diameter of 3 i-tM were conducted to the orbit area corresponding to the nasal field of vision of the right eye. The second rectangular-shaped electrode with an area of 48 cm was located on the patient's arm and, since the current density under this electrode was an order of magnitude and less than that under the electrode placed in the orbital region, the main electrical excitation was created in the region of the eye block. The electrostimulation was performed by a series of biphasic rectangular current pulses in a burst mode with the following parameters: pulse amplitude — W ms, 5 pulses per burst, with a frequency of 20 Hz, in a rhythm of 1 burst per 1 second; the duration of yery is

In the first session, 4 series of electrical stimuli were performed on the current parameters listed above, with the electrode placed on the skin surface in several areas of the upper transfer quadrant of the upper eyelid of the right eye. The intervals between the series of electricity were 2–3 minutes.

The second electrostimulation session was carried out in a similar pattern with the same parameters, but the pulse amplitude was 8 V. The sharpness of the eyesight after the second session increased by 0.01 to the eye.

In the third session and further, the stimulation was carried out through a disk electrode with a diameter of 10 mm, placed on the upper eyelid in the center of the eye. The stimulation parameters were as follows: the pulse amplitude was 8 V., the phase duration was 10 ms, the pulse frequency in a pack was 20 Hz, 5 pulses each in a pack, with a rhythm of tracking packs 1 time in 2 s, with a total duration

120 p. During the session, 5 series of electric effects were conducted with intervals of 2 minutes.

Starting from the third session, the patient noted the occurrence of electrophosphates, following in the rhythms of packs of electrical impulses, in the upper bearing segment of the field of view, with amplitude B8, and later with amplitude 6 V.

A total of 9 sessions of percutaneous electrical stimulation of the optic nerve of the right eye were performed. During the course, there was an increase in the severity of the zrv-15 or traumatic mode, the stimulation of the osun of the right eye to 0.6 (with correction) and the extension of the field of vision to 40 (with almost complete temporal hemianopsy).

Compared to the known, the proposed method eliminates the need for electrodes applied to the orbital region, starting with zones that tonicly correspond to the most safe areas of the optic nerve, which are predetermined.

the possibility of inserting special electrodes into the optic nerve surgically, which significantly reduces the trauma and expands indications for clinical use |

Claims (1)

Invention Formula The method of restoring the vision in case of injuries of the optic nerve by electrostimulation with phase-wise right-angle impulses, is of concern to people who, in order to reduce They exist through electrodes superimposed on the orbital region, starting with zones that tonicly correspond to the best preserved areas of the optic nerve, which are predetermined.