SU113744A1 - The device for the treatment of squint amblyopia - orthoambliophore - Google Patents

Description

In the known squint treatment devices (e.g., a synoptophore), the installation of images in accordance with the position of the visual axes of both eyes is carried out on the basis of observing the position of light reflexes on the corneas. With such a device, the accuracy of determining the squint angle suffers. These devices do not provide treatment for amblyopia.

The proposed device does not have these disadvantages.

The essence of the invention is that the installation of objects with respect to the visual axes of both eyes is carried out by directly observing the fundus of the eye using two additional ophthalmoscope systems. The basic optical system makes it possible to present cinematographic or fixed test objects, the change of which is carried out imperceptibly for the patient. The mechanism for changing objects makes it possible to produce a series of patterns, combined by a single plot, as well as an optotype for the study of visual acuity. The presence of two ophthalmoscopic systems with a shielding diaphragm allows for the treatment of amblyopia with improper fixation of light, as well as for anomalies of correspondence of the retinas. In these cases, the desired position is attached to the image on the retina by moving the needle of the fixation device or by displacing the right and left objects. After blinding the retina, in order to obtain a consistent image, the presentation of motionless and film objects with flickering light is carried out in the device itself and does not require additional devices. The device has mirrors for observing the ocular condition of the patient, as well as scales for determining the position of objects presented.

FIG. 1 shows a general view of the device; in fig. 2 - diagram of the device.

.NO 113744

The main parts of the device are two shells / that rotate around axes passing through the centers of rotation of the eyes. The angle of rotation of these shells is determined by the clamps 2, fixed on the coordinate table 5, making it possible to set the device to the required position. The housing / mounted ocular heads 4 and ophthalmoscopic systems 5. Coordinate table 3 is fixed on panel 6, inside which are installed kinematic 7 and electric 8 nodes of the device, a mechanism for changing stationary objects 9 and film projection installation 10. The panel can be moved along the device using a hydraulic device mounted on the shtativ //. The head of the patient is fixed by a lug 12 and a forehead 13.

Observation of objects (the main optical scheme in the right half of Fig. 2) is carried out through a system of lenses 14, 15, 16, 17, prisms 18, 19 and mirrors 20 and 21.

Ophthalmoscopy and retinal blinding with yellow spot shielding (left half of Fig. 2) are performed after turning on the mirrors 22, moving the illuminator 23 and turning on the additional lens 24 connected to the shielding diaphragm 25.

Observation of the fundus of the eye is carried out through a microscope 26. Electric lamps 27, 28 and 29 are used to illuminate objects and are the source of light for ophthalmoscopy. The observation of the position of the patient's eyes during the examination is carried out by means of the mirrors 30. The eye is installed using the fixing needle 31. By rotating the mirrors 21, the patient is presented with either still images 9 or a movie image 10.

Blinding time is controlled by time relay 32, which beeps after the set time has elapsed.

The described optical scheme, in combination with the corresponding mechanical and electrical devices, allows each of the instrument halves to be set in a position ensuring that the image is on the visual axis, to create the retina blinding when shielding its central zone, to show objects flickering, stationary and trembling, to set eyes in the position required to treat amblyopia and retinal correspondence anomalies.

Subject invention

Claims (2)

1. Instrument for the treatment of squint and amblyopia - orthoambleophore, consisting of optical, electrical and mechanical devices that provide separate presentation of objects having simultaneous and separate oscillatory movements and flashing lighting with predetermined frequency values, as well as the method of successive images, characterized in that, in order to accurately set up the device when measuring the angle of a squint and during therapeutic exercises, it has two ophthalmoscopic devices, allowing guides to combine the optical axis of the device with the visual axes of both eyes and hold blinding reticulated shells of one or both eyes with shielding or without shielding yellow spot with a change in luminance, chromaticity flicker frequency background and character pred the claimed moving and stationary objects and moving pictures. 2. The apparatus according to claim 1, characterized in that, in order to obtain an amblyopic eye with an eccentric fixation necessary for treatment, during the blinding, the desired eye movement is carried out either by moving an object presented to the second eye, or by moving the fixation object in front of blinded eyes. Fig.1 30 13 I / 4 20 Phage 2 fS