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A Guide to the Most Important Ophthalmic Ultrasound Equipment

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Ophthalmic ultrasound equipment plays a critical role in your ability to diagnose and treat a variety of conditions involving the eye. At Keeler, we offer a full range of the most cutting-edge ophthalmic ultrasound equipment to meet even the most demanding clinic's needs. Continue reading to learn more about some of the most important ophthalmic ultrasound equipment.

Keeler 4Sight Ophthalmic Ultrasound Equipment

The Keeler (Accutome) 4Sight is the preferred unified solution for ophthalmic ultrasound diagnostics. As the single point-of-use technology for every ophthalmic diagnostic imaging need, the Keeler (Accutome) 4Sight comes in an convenient portable package and allows you to use:

Most importantly, we bring more than a century of experience creating and innovating the best ophthalmic equipment. Contact Keeler Ophthalmic Instruments today to learn more about our ophthalmic ultrasound equipment.
  • A-Scan,
  • B-Scan,
  • UBM, and/or
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A-Scan Ophthalmic Ultrasound Equipment

A-scan ultrasound refers to the single dimensional amplitude modulation scan. This essential ophthalmic ultrasound equipment is regularly used to measure AL, which stands for axial length.  This measurement is especially important for calculating IOL or intraocular lens before performing surgery for cataracts.

Another key application of A-scan ophthalmic ultrasound equipment is for determining ultrasonic properties, such as low internal reflectivity and high internal reflectivity.

A-Scan Probe for the Keeler (Accutome) 4Sight

The A-Scan probe for the Keeler (Accutome) 4Sight only weighs 0.08 ounces, has a width of 0.2" and a length of 1.75". The A-Scan probe  delivers an electronic resolution of 0.016 MM, a 10 MHz frequency, and an astounding clinical accuracy of 0.01 mm. You can run this probe in either contact measurement mode or immersion mode.

Learn more about the A-Scan probe for the 4Sight.

B-Scan Ophthalmic Ultrasound Equipment

The B-Scan ophthalmic ultrasound equipment is a two-dimensional, cross-section brightness scan. This ultrasound device is utilized to evaluate orbital pathology and posterior segment, especially when direct view is not possible and ocular media is cloudy.

The B-Scan is complementary to the A-Scan in the analyzation of intraocular processes due to its amazing ability to present different topographic features, such as the shape and anatomical relationship to other structures of the eye.

The B-Scan is extremely sensitive to any high reflective materials present. As a result, the B-Scan is able to detect a variety of intraocular foreign bodies, such as calcium found in optic nerve head drusen.

B-Scan Probe for the Keeler (Accutome) 4Sight

The B-Scan probe for the Keeler (Accutome) 4Sight is only 7" long, weighs 6 ounces, and is only 1.25" wide. This device can run at 12 or 15 MHz, offers a lateral resolution of 0.085 mm, and boasts an axial resolution of 0.015 mm.

Learn more about the B-Scan probe for the Accutome 4Sight.

UBM Ophthalmic Ultrasound Equipment

UBM (ultrasound biomicroscopy) is a effective technique used for imaging anterior segments of the eye. In comparison to other ophthalmic ultrasound equipment like the 10 MHz A-Scan or the 12/15 MHz B-Scan, UBM equipment uses a significantly higher frequency transducer usually between 35 up to 100 MHz. This higher frequency results in up to 25 um axially and 50 um laterally — even though it contends with a lower depth of tissue penetration.

UBM is useful for imaging most of the anterior segment anatomy, in addition to ciliary body cysts, angle closure glaucoma, pathologies, neoplasms, as well as angle trauma. The UBM is also especially critical for attaining viable refractive outcomes following cataract surgery. The UBM allows you to visualize the following structures:

  • Iris
  • Cornea
  • Scleral spur
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    Anterior chamber angle
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    Posterior chamber
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    Ciliary body
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    Anterior Chamber
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UBM Probe for the Keeler (Accutome) 4Sight

The UBM probe is only 1.25" in diameter, 7" in length, and weighs only 6 ounces. The UBM probe offers a lateral resolution of .05 mm, an axial resolution of 0.015 mm, and operates at 48 MHz. You can choose from either unguarded or guarded options.

Learn more about the UBM probe for the 4Sight.

Pachymeter Ophthalmic Ultrasound Equipment

Ultrasonic pachymeters or pachometers allow ophthalmologists and surgeons to effectively measure the thickness of cornea in patients suffering from glaucoma, those considering refractive surgery, or patients with suspected hypertension. One of the most attractive attributes of using the pachymeter is how cost effective the device is — compared to more expensive alternatives, such as confocal microscopy.

Pachymeter Probe for the Keeler (Accutome) 4Sight

The Pachymeter probe for the Accutome 4Sight is only 1.75" long, weighs 0.67 ounces, and is 0.2" wide. The 4Sight pachymeter has a digital Signal Analysis that offers outstanding repeatability and accuracy.

The pachymeter probe has a gentle touch probe, converts IOP measurements, and provides a sampling rate of 65 MHz. It boasts up to 9 measurement areas per eye and an accuracy of +/- 5 microns.

Learn more about the Pachymeter probe for the 4Sight.

Contact Keeler for Ophthalmic Ultrasound Equipment

In addition to the previously mentioned ophthalmic ultrasound equipment, we also offer:

About the Author Eugene VanArsdale

Eugene is the Director of Marketing Communications at Keeler Instruments. He has been with Keeler since 1982 and is co-holder of two patents for the company. Eugene has a true passion for the eye care industry and has dedicated himself to understanding the ins and outs of the optometric and ophthalmic equipment market.