Binocular loupes: description and selection criteria

In medical practice, they often use binocular loupes. High-quality work of the doctor and convenience in use depend on the correct choice of this device. The characteristics of the device, its purpose and selection criteria - this will be discussed below.

Binocular loupe Is an optical device with lenses that allows you to see a clear, enlarged picture with two eyes at once. The two images seen by both eyes merge into one volumetric image in the cerebral cortex.

The magnifier has a set of lenses of varying degrees of magnification... The base of the magnifier is made of plastic with built-in glasses... The base itself is attached so that the lenses are parallel to the eyes. The device is secured with a strap or temples. It depends on the type of magnifier.

Models exist forehead and spectacle-rimmed with multiple lenses that provide binocular vision.

Glasses are made from optical plastic. Some models are made from glass, but are very rare. Plastic eyepieces are no worse than glass ones. Lightweight plastic is much safer than heavy glass, which shards can get into your eyes if damaged.

Optical instruments vary by degree of magnification, depth of field and working distance. Some models are equipped with flashlights. The direction of the luminous flux can be adjusted with additional functions. Such devices operate on batteries.

For a closer look, some loops have replaceable glasses with high magnification... The devices are equipped with several slots into which interchangeable lenses can be easily inserted.

Binocular loupes are used for professional purposes... Ophthalmologists, dentists, and ENTs cannot do without this device. When examining a patient, it is often necessary to consider the smallest details. The quality of the examination and subsequent treatment depends on this.

The use of the device is relevant and for household types of work... The devices are used in the collection of watch mechanisms and small elements, in the repair of microcircuits. The device is suitable for needlework. High optical performance lenses provide clear visibility and sharpness. Therefore, magnifiers are used during embroidery and knitting.

Optical loupes differ from each other not only in characteristics range and increase... They are divided into types depending on the type of attachment.

Types of binocular loupe attachment:

• spectacle frame;
• special helmet;
• rim or hoop;
• metal frame.

It is considered comfortable to work goggle or helmet... Such magnifiers make it possible to correctly distribute the load. In addition, the glasses have special mounts for correcting eyepieces. This system allows several doctors to use the same frame with different visual acuity. Glasses can be easily exchanged for others thanks to convenient grooves in the base of the structure.

Helmet models look like a structure without glass. They can be worn directly over your own glasses. The device is adjustable in height and width.Inside, the design is equipped with soft pads, which eliminates the appearance of discomfort during prolonged wear. There are also models of helmets with protective lenses. The choice depends on the convenience and purpose.

Illuminated fixtures can be equipped with a flashlight in the middle or on a special visor. There are illuminated devices on the sides. If the fixture has multiple lenses, a flashlight can be positioned near each eyepiece. Also, such models have dOptional beam direction adjustment function.

An important feature of models with flashlights is considered location of the battery compartment. It does not make the structure heavier and does not cause discomfort during work.

Of course, when choosing a magnifying glass, you need to decide with the purpose of the device.

For people working in the field of medicine, the main thing is choose a reliable mount. It is better to select samples in the form of a helmet or rim. It is not recommended to use models with spectacle frames: the device may slip off when the head is tilted.

For a more detailed consideration of small details, you should choose models with backlight... They are most commonly used by dentists and ENT specialists.

There are several main criteria for choosing binocular loupes.

• Multiplicity of magnification. The parameter is responsible for the degree of magnification of the object.
• Focal length... In this case, the distance of the object under consideration from the lens is meant.
• Distance between the pupils. Comfortable work depends on this value. In people with a small distance between the pupils, using eyepieces can cause fatigue and a burning sensation. This is due to the presence of a partition between the panes. If the interpupillary distance is 64 mm or more, then the possibility of discomfort is minimal.

When choosing, it should also be understood that high magnification is not always the best option. The parameter value should be optimal for each type of work. Too high magnification can blur the image.

Glass size and shape are also considered the main features when choosing a magnifier. The larger the glass, the less bulky details can be viewed. But the large size of the eyepieces increases the size of the structure itself.

Classic round lens easy to manufacture, but less convenient to use than quadrangular glasses. In head magnifiers, magnifying glasses, helmets, they use just the same quadrangular shape. This greatly simplifies and speeds up the change of glasses.

The binocular loupe is the main tool for various types of work... The device can be found in everyday life of medical institutions. It is also used for domestic purposes. The choice of the device depends directly on the purpose and some parameters. These recommendations will help you choose the optimal device for a particular type of work.

For a video review of the Magnifier 81007a binocular loupe, see the following video.