SU1691871A1 - Eye model - Google Patents

Abstract

The invention relates to medicine, in particular to ophthalmology and medical tools, and can be used, for example, to simulate dynamic changes in the optic nerve head under the influence of changing intraocular and intracranial deviations, as well as to test the performance of laser therapeutic devices ophthalmoscopy and fundus biomicroscopy techniques. The aim of the invention is to enable the modeling of dynamic changes in the optic nerve head under the influence of changing intraocular and intracranial pressure. The objective is achieved in that the model of the eye comprises a housing with a hole in the front wall covered by the lens, and the fundus simulator located coaxially with it, represented by the posterior corpse eye, which divides the housing into two tanks filled with liquid and communicating with pressure setting devices. One of the reservoirs is connected to an intraocular pressure setting device, and the other is connected to an intracranial pressure setting device, made in the form of manometric tubes. 1 il. (L

Description

The invention relates to medicine, in particular to ophthalmology and medical tools, and can be used, for example, to simulate dynamic measurements of the optic nerve head under the influence of varying intraocular and intracranial pressures, as well as to test the performance of laser therapeutic devices and the development of techniques ophthalmoscopy and fundus biomicroscopy

The aim of the invention is to enable the modeling of dynamic changes in the optic nerve head under the influence of enuflicular and intracranial pressures.

The drawing shows the model of the eye, the incision.

The eye model is a cylindrical body consisting of two parts. In the front part 1 of the housing, in the center, on its front transparent wall there is fixed an interchangeable lens imitating the optical system of the eye 2. The cavity of the front part of the housing 3 is connected to the bottom by means of a fitting 4 with a manometer, and at the top there is a fitting 5 / formed by the front part of the body and simulator 6 fundus represented by the posterior division of the corpse eye. The rear part of the housing 7 has an internal diameter of 20-21 mm to the eye

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an adult person entered him in the back segment. Using screws, the rear part 7 is hermetically sealed to the front part 1 of the body, while fixing the fundus simulator between its joints 8. The tank 9, which is formed between the back surface of the fundus simulator and the housing 7, communicates in the lower part by means of a fitting 10c with a manometer, and at the top there is a fitting 11 for removing air.

The model works as follows.

A cadaveric eye (storage time not more than 48 hours after see mouth) is placed in the back of the rear part of the housing 7 with a rear cet, the eye is cut into two parts at the equator, the front part of the vitreous body is removed, the upper edge of the rear part protruding above the opening, flared and clamped between the joints 8 of the front and rear parts of the case and fixed with screws. The lower fitting 4 is connected to the manometer and through it saline or another liquid is slowly fed into the tank 3, air is removed through the silicon 5. After the air has been removed, the fitting 5 is closed, the pressure in the tank is raised to the required, then, similarly, the filling of the rear reservoir 9. After filling the rear reservoir with liquid, the eye model is placed under a slit lamp, an operating microscope or a light microscope of the type MBC-1. Increasing the pressure in reservoir 3, imitate intraocular pressure and observe changes in the optic nerve head (optic disc), the occurrence of deflection of the ethmoid plate inside the eye, the pressure exerted on the posterior eye, the pressure in the posterior reservoir 9 changes, and the effect of intraocular pressure on the optic disc at different levels of intracranial pressure, as well as the formation of the stagnant dyske of the ligamentous nerve (displacement of the optic lattice optic disc outward from the eye),

The model allows to simulate the hydrodynamics of the eye, the effect of varying both in magnitude and in time of intraocular and intracranial pressure on the optic nerve head and on the tissue of the posterior part of the eye. The dynamics of the ongoing processes can be assessed visually, filmed on a photo, film and videotape. The model can be used to study the effect of quantum (light) radiation pulses on the anatomical structures of the posterior part of the eye. The use of the model allows medical personnel to be trained in techniques for

equipment without the participation of patients in conditions as close as possible to real research, to quickly work out the technique of ophthalmoscopy and biomedroscopy of the fundus.

Thus, the invention makes it possible to achieve the goal set up - to create a device for simulating dynamic changes in the optic nerve head under the influence of altering intraocular and BHyfing cranial pressures.

Claims (1)

Invention Formula An eye model comprising a housing with a hole in the anterior wall, covered with a lens, and a fundus simulator located inside the housing, characterized in that, in order to simulate dynamic changes in the optic nerve head under the influence of intraocular and intracranial pressure, the fundus simulator is presented posterior division of the corpse's eyes and divides the sealed body into two a reservoir filled with liquid, with pressure transducers, wherein one of the reservoirs is connected to an intraocular pressure gauge, and the other to an intracranial pressure gauge, made in the form of manometric tubes. / 7 ten