DVA Test for Vertigo in Dhaka

Persistent dizziness, unsteadiness, or a spinning sensation can have many possible causes, and identifying the exact source is essential for effective treatment. Among the range of diagnostic tools used to evaluate the inner ear and balance system, the DVA test, short for Dynamic Visual Acuity test, is a valuable tool for assessing how well the vestibular system works together with the eyes during head movement.

This guide explains what the DVA test is, why it matters for diagnosing vertigo and balance disorders, and what patients can expect when undergoing this test with Dr. Sajib Saha, a Vertigo and Balance Disorder Specialist in Dhaka.

What Is the DVA Test

The Dynamic Visual Acuity test measures a person’s ability to keep objects in clear focus while their head is moving. This ability depends heavily on a reflex known as the vestibulo-ocular reflex, or VOR, which allows the eyes to automatically adjust and remain fixed on a target even as the head moves. The VOR is coordinated by the vestibular system located in the inner ear, working closely with the eyes and brain to maintain stable vision during movement.

In a healthy vestibular system, visual acuity remains largely unaffected whether the head is still or moving. When the vestibular system is not functioning properly, however, vision often becomes blurred or unstable during head movement, even if the person can see clearly while sitting still. The DVA test is specifically designed to detect this difference.

Why the DVA Test Matters for Diagnosing Vertigo

Many patients experiencing dizziness or vertigo describe difficulty focusing on objects while turning their head, walking, or moving quickly. This symptom, known as oscillopsia, is often linked to a weakened or damaged vestibulo-ocular reflex. Because standard eye exams are typically performed with the head still, they cannot detect this specific type of visual instability. The DVA test fills this diagnostic gap by directly assessing how the visual and vestibular systems perform together during motion, which is essential for identifying certain vestibular disorders that might otherwise go undiagnosed.

How the DVA Test Is Performed

During a DVA test, the patient is first asked to read a chart of letters or symbols, similar to a standard eye chart, while keeping their head completely still. This establishes a baseline measurement of static visual acuity. The patient is then asked to read the same or a similar chart while moving their head from side to side or up and down at a controlled speed, while the examiner records how well the patient can still identify the letters or symbols during this movement.

The difference between the patient’s visual acuity while still and while moving is then calculated. A significant drop in visual clarity during head movement is a strong indicator of vestibular dysfunction, particularly a weakened vestibulo-ocular reflex.

What a DVA Test Can Help Identify

The DVA test is particularly useful for identifying conditions where the vestibulo-ocular reflex is impaired, including vestibular neuritis, labyrinthitis, and other forms of vestibular hypofunction, where one or both sides of the inner ear balance system are not working properly. It is also used to evaluate patients recovering from vestibular disorders to track improvement in the VOR reflex over the course of treatment or vestibular rehabilitation therapy.

How the DVA Test Fits Into a Complete Vestibular Assessment

The DVA test is rarely used in isolation. It is typically part of a broader diagnostic evaluation that may include several other specialized tests depending on the patient’s specific symptoms and case history. For a comprehensive assessment of eye movement and inner ear function, this may include the VNG (Videonystagmography) test, which evaluates involuntary eye movements associated with vestibular disorders. Patients may also undergo the vHIT (video Head Impulse Test), which measures the vestibulo-ocular reflex directly using rapid head movements and video tracking, offering results that closely relate to what the DVA test aims to assess but through a different testing method.

In cases where inner ear fluid pressure or nerve function is a concern, additional tests such as the VEMP (Vestibular Evoked Myogenic Potential) test or the ECochG (Electrocochleography) test may also be recommended to build a complete picture of the patient’s vestibular and auditory system function.

Who Should Consider a DVA Test

A DVA test may be recommended for patients experiencing blurred or unstable vision specifically during head movement or walking, unexplained dizziness or unsteadiness that has not been clearly diagnosed through basic examination, ongoing symptoms following a head injury or vestibular infection, and patients undergoing vestibular rehabilitation who need objective tracking of their recovery progress.

Conditions Commonly Associated With DVA Test Findings

Abnormal DVA test results are often associated with several vestibular conditions. This includes vestibular neuritis and labyrinthitis, which involve inflammation of the inner ear or vestibular nerve, and cases of Vestibular Disorder more broadly, where the vestibular system’s ability to coordinate with vision and movement is disrupted. Patients with these conditions often benefit from a structured treatment approach that addresses both the underlying cause and the resulting balance symptoms.

Why Choose Dr. Sajib Saha for Vestibular Testing in Dhaka

Dr. Sajib Saha is a Vertigo and Balance Disorder Specialist in Dhaka with over a decade of clinical experience and certification in VNG and Vestibular Rehabilitation Therapy (VRT), having treated more than 15,000 patients. Rather than relying on a single test or a generic treatment approach, Dr. Saha uses a combination of advanced diagnostic tools to identify the exact root cause of each patient’s dizziness or balance issue, ensuring the treatment plan is targeted and evidence-based.

Once a diagnosis is confirmed, treatment may involve specific approaches depending on the underlying condition, such as BPPV Treatment for positional vertigo, Meniere’s Disease Treatment for patients with fluctuating hearing loss and vertigo, or a broader Vertigo Treatment plan tailored to the patient’s specific symptoms and test findings.

What to Expect During Your Visit

Patients visiting for vestibular testing can expect a detailed discussion of their symptoms and medical history, followed by a recommendation for the specific tests most relevant to their case, which may include the DVA test alongside other assessments such as VNG or vHIT. Based on the combined results, Dr. Saha will explain the findings clearly and outline a personalized treatment plan.

For patients unable to visit the clinic in person, an Online Video Consultation is available for follow-up appointments, second opinions, and guidance for patients living outside Dhaka.

Clinic Location and Contact

Dr. Sajib Saha’s clinic is located at Concept Tower, 3rd Floor, Room 337 and 338, 68-69 Green Road, Dhaka-1205. You can reach the clinic by phone at 01915 88 66 55.

Book Your Vestibular Assessment Today

If you are experiencing blurred vision during head movement, unexplained dizziness, or ongoing balance problems, a proper vestibular assessment, including tests like the DVA test, can help identify the underlying cause and guide you toward effective treatment. Early diagnosis often leads to better outcomes and a faster path back to stability and confidence in daily movement.

Visit the Contact page or Book an Appointment with Dr. Sajib Saha today to schedule a comprehensive vestibular evaluation.

This content is intended for general educational purposes and does not replace a professional medical evaluation. Please consult Dr. Sajib Saha or a qualified specialist for an accurate diagnosis of your specific symptoms.