Ophthalmic perimeters For Sale

Ophthalmic Perimeters

Ophthalmic perimeter is a device for measuring the area covered by the visual field of the eye. The device consists of a dome-shaped surface on which points and lines are placed. The principle of operation of all types of devices is based on a visual stimulus: a flashing light or a beam that travels over the specified area. 

The test results are recorded in a special graph by means of software. By studying them, the doctor can identify diseases such as: glaucoma, retinal degeneration, diabetic retinopathy. 

The tonometer and coherence tomograph are not as effective instruments as the ophthalmic perimeter. The device accurately determines the depth of lesions and monitors changes in visual function over the course of treatment.

Types of perimeter equipment 

There are 3 types of perimeters in total: arc, computer (automatic), and projection. 

Arc instruments are used to measure peripheral vision. The study consists of tracking a point of light and pressing a button when it enters the field of view. 

Computer-based devices include a computer, a monitor, and a printer. The principle of the procedure is simpler: visual signals come to the screen and the computer registers the eye fixation points. The doctor can change the brightness, color, shape, and size of the stimuli. This is how an accurate map of the patient's visual field is constructed. 

Projection machines use the appropriate technology. Projections of light signals on the screen cause the patient's reaction. Based on its results, central and peripheral vision are evaluated. 

Additionally, static and dynamic testing technologies are classified. They examine peripheral visibility in different states. The methods are used in the diagnosis of retinal degeneration, diseases of the analyzer, and brain tumors. 

Each apparatus has its own advantages and disadvantages. So, automatic  perimeters examine more ophthalmic indicators, but their price is much higher. The opposite is true with arc devices.

Technical features and functions 

In addition to the basic technical features: calculating field boundaries, creating a vision map, its evaluation - there are additional features. Pay attention to them when choosing a device. 

• Color perimeters to assess the ability to distinguish the color spectrum. 

• Damaged nerve endings analysis. 

• Gaze fixation point registration for accuracy of results. 

• Data storage for later monitoring of progress. 

• Ability to perform tests at different background levels to check visual system adaptation. 

• Determination of retinal threshold sensitivity. 

• Automated testing without the need for monitoring. 

• Detailed analysis of results in graphs and charts. 

• Built-in network connection with data exchange capability. 

Perimeter for ophthalmic analysis: where to buy?

You can buy visual field testers on the international platform Bimedis. Sellers and buyers of medical equipment from all over the world come together here. 

Buy and sell, trade in your old equipment, or order necessary maintenance. 

Step into the next phase of your business with Bimedis!

• How much do perimeter cost?

  The price of ophthalmic perimeters differs depending on the type, model, and features built into the equipment. For example, computer perimeters are always more expensive than arcuate perimeters. On the Bimedis platform, the minimum price for perimeter equipment is $800.

• What types of ophthalmic perimeters are available on the market?

  There are 3 types of perimeters on the market: arc perimeters, computerized (automatic) perimeters, and projection perimeters. Arc devices use spotlight technology. The patient monitors the light beam and presses a button independently when an object enters the field of vision. Computer devices consist of a monitor and a printer. Different visual signals (colors, shapes, flashes) are inputted on the screen, the computer automatically registers the eye fixation points and outputs the results. Projection machines use appropriate technology. Several projections appear in front of the patient as shapes or colors. Central and peripheral vision are evaluated based on the results of this examination.

• What functions are worth paying attention to when choosing an ophthalmic perimeter?

  The main technical functions of perimeter equipment are calculation of visual field borders, creation of a visual map and its evaluation. Additional features simplify the examination and increase its accuracy. These include: - Color perimeters to assess the ability to distinguish the color spectrum. - Analysis of damaged nerve endings. - Gaze fixation point registration for accuracy of results. - Data storage for later monitoring of progress. - Ability to perform tests at different background levels to check the adaptation of the visual system. - determination of the retinal threshold sensitivity. - automatic testing without the need for monitoring. - built-in network connection with data exchange capability.