Why A-Scan Biometer Used in Ophthalmology?

Performing both applanation and immersion biometry in Ophthalmology can be done through unique device, known as A-Scan. Here the term AScan is the synonym used for Amplitude Scan. This is possible for this biometer device, PalmScan A2000 A-Scan, to obtain quick and extreme accuracy. The PalmScan A 2000 A-Scan enables you to perform immersion biometry in an effortless way. It uses E-Z tip immersion Shelland, which is portable and works on Ultrasound technology. Here, an A-Scan Biometer is used in Ophthalmology, as the device takes only seconds to complete the immersion A-Scan procedure. Hence, time will not be considered as a limiting factor with A2000 device. By using AScan Biometer, Ophthalmologists can derive fast results. This process can be done without creating any mess and discomfort to the patient.

Advantages of A-Scan Biometer

For doctors, it is not necessary to recline their patients or handle multiple tools while using A2000 A-Scan biometer. They are able to get accurate immersion readings. Ultrasonic waves are used in the biometry procedure. This enables the specialist doctor to measure parameters, like the thicknesses of the anterior chamber, lens, and axial eye length, to calculate the desired IOL of a patient, prior to surgery. Here, the term IOL stands for the intraocular lens. PalmScan A 2000 A-Scan is battery operated through the use of ultrasonic wave technology. It allows the measurement of even the densest cataractous eyes. This procedure guarantees the doctor one hundred percent coverage of results. Another important feature and advantage of this uniquely developed instrument is that it is possible for the doctors to achieve Contact/Applanation mode. Here, the biometer technique employed is known as “Corneal Compression Detection,” and is considered more popular in the area of Ophthalmology. In other words, it alerts the user of any corneal compression. This process prevents the user from taking inaccurate measurements at any time.

Other Important Features Of PalmScan A2000 A-Scan

It has been observed that this PalmScan A2000 A-Scan has enabled Ophthalmic biometry procedure to be performed easily. Hence, the doctors using this device can execute smooth and successful surgery on patients. You can connect the device to your Windows personal computer or laptop, through a USB port. The entire system can be considered as a state of the art A-Scan biometry system. It is also possible to include a Tablet device in the system. The device is a clinically proven biometry technique involving accurate coherence interferometry. The device provides contact as well as immersion captures. The PalmScan A2000 machine is compatible with EZ-Tip immersion soft shell, enabling the cleanest and easiest immersion biometry in Ophthalmology. It is also compatible with traditional hard immersion shells. The device offers the capability of dense cataract penetration. It has a Built-In IOL calculator with advanced formulas.  Doctors can perform Post Lasik correction keratometry procedures. The PalmScan A2000 A-Scan is EMR compatible and offers unlimited storage of data related to the patient. It has the capability of generating comprehensive PDF reports as well. The device is provided with a 10MHz probe with fixation light and is supplied with one year warranty. The A-Scan device is considered as accurate as Laser Interferometry. This device is available at the most economical price.

The device PalmScan A2000 A-Scan offers the advantage of measuring the densest possible cataract eyes in patients. Through this innovative device, Ophthalmologists can perform excellent surgical procedures on the patients using the technology of biometry.

What Are The Basic Features of A-Scan Biometer?

A-scan ultrasound biometry or Amplitude-scan which is popularly known as A-scan is a traditional type of diagnosis used for testing the eyes. It is commonly done in optometry or ophthalmology practices. The A-scan helps in determining the data of the length of the eye, which is used to diagnose common disorders of the eyesight. It is most commonly used to check the eye length and calculate the power of the intraocular lens.

The Utility of The A-Scan Diagnosis

In all the total refractive power of the eye is nearly 60 diopters. This total refractive power is provided partly by the cornea and partly by the lens. 40 diopters is provided by the lens, and the crystalline lens provides 20 diopters. After the surgical removal of the cataract, the original lens is replaced by the artificial lens. The power requirement of the lens is calculated with the help of data provided by A-scan.

Calculation of Corneal Power

The length of the eye is measured by with A-Scan Biometer, and the corneal power is calculated with the help of process known as Keratometry. These figures are placed in a simple formula, and the power of intraocular needed is calculated. There is not just a single formula for this, but there are many such formulas which are used to determine different features of the eyes. However, all the information extracted out of the formula might not be valid for medical use.

Other Utilities of A-Scan

The main use of A-san is to determine the power of the intraocular lens. Apart from this important use includes the determination of the size of the masses present in the eye. The ultrasound features and the type of masses present in the eye are also determined. This is known as Quantitative A-scan.

New Generation A-Scan Devices

The instruments which are used to determine the A-scan data need to come into contact directly with the cornea. When it was used to over many patients, there were chances of eye infections and spreading of eye diseases. However, nowadays there are A-scan devices are available in the non-contact instrument forms. They are the new generation A-scan instrument, and they have disposable covers which come in the actual contact of the eyes and have lesser chances of infections and spreading of eye diseases.

Features To Look For in a Good A-Scan Device

If you are looking for a good device you need to check out with the following features:

• Weight

• Resolution

• Interface

• Dimensions

• IOL Formulas

• Display

• Screen Size

• Power use

• Measurement Range

• Zoom

• Printer

• Scan Angle

• Scan deepness

• Total Gain Control (TGC)

• Scale 

• Repeatability

The A-scan instruments are also available in various forms, different shapes, and sizes. As the new generation of A-scan devices has arrived, they have become lighter and portable. They are comfortable to carry, easy to use and give accurate scan. There has also a visible demarcation in the precision of the data.