Get your detailed examination using USG A-Scan at Molecular Diagnostics and Therapy, which is certified by NABL & NABH and has a diagnostic imaging facility. In ophthalmology, a survey using ultrasonography is conducted to establish the length of the eye and also crucial internal measurements to aid the eye specialist in determining some types of eye disease and preparing optimal treatments.

About USG A-Scan

Amplitude-scan ultrasound, or USG-A scan, is a special eye examination in which high-frequency sound waves are used to measure the size of the eye's internal parts. In ophthalmology, it is often employed in conjunction with the measurement of axial length prior to cataract surgery, especially when inserting an intraocular lens power into the cataractous eye. The exam may be quick, and the measurements can help an ophthalmologist develop a treatment plan.

What is USG A-Scan?

The ultrasound waves of USG A-Scan are used to determine the distance between various parts of the eye. The echoes that bounce back are displayed on a graph, which allows the examiner to obtain certain critical measurements of the eye. Their most common application is to take a measurement of the distance between the front of the eyeball and the back of the eye (axial length). Axial length measured by A-scan is used alongside corneal curvature and other biometric measurements to calculate intraocular lens power. A-scan may be achieved by either contact or immersion method, as may be readily available and required clinically.

Common Reasons for USG A-Scan

• Ocular Biometry: measurement of the intraocular dimensions of the eye and the eyeball (axial length).
• Intraocular Lens Calculation: Measurement results taken by the ophthalmologist in the planning procedure for the lens replacement surgery.
• Assessment of eye size and eye length: helps to diagnose the size and length of the eye if needed.
• Refractive Error Assessment can be used to find out what the size of your eye is in certain patients with large refractive error.
• Eye Exam Preoperatively: Performs testing to determine parameters in a planning process for certain ophthalmic treatments.
• Follow-up of Selected Eye Conditions: This permits further eye measurements to be taken.

Conditions and Measurements Evaluated

Axial Length of the Eye

A-scan determines the thickness from the front to back of the eye. A crucial factor that is taken into account for calculating the power of the intraocular lens before cataract surgery.

Cataract Surgery Assessment

The axial length measurement helps the ophthalmologist plan for the cataract surgery and determine a corresponding lens replacement intraocular lens for a patient's measurements and clinical requirements.

Intraocular Lens Power Calculation

A-scan measurements are used alongside other biometric values, such as corneal curvature, in formulas that estimate the required power of an intraocular lens.

Ocular Size and Biometry

The exam can be used to get objective measurements of the eyeball and can be used to further evaluate the eye if there is a suspected size discrepancy.

Why Choose Molecular Diagnostics and Therapy?

Molecular Diagnostics and Therapy is an NABL and NABH Accredited Diagnostic Centre having a patient-centric attitude and focus on Diagnostic Quality, Professional Expertise and Customer Service. Our team's aim is to provide an organised examination process and accurate diagnosis to assist our referring clinicians in assessment and treatment planning.

Book Your USG A-Scan

If your doctor has advised you to have a USG A-Scan, please contact Molecular Diagnostics and Therapy for details of appointments and availability. Bring your prescription and your previous eye examination reports and/or eye measurements, if available.