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Uploaded byAiman Bajwa
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Comprehensive Guide to Double Maddox Rod Test for Eye Torsion Assessment

Overview of the Double Maddox Rod test procedure, interpretation, and clinical relevance in diagnosing cyclo-deviation and related binocular vision disorders.

Healthcare◦
Double Maddox Rod By Aiman Bajwa
MADDOX ROD: A Maddox rod is a clinical tool used in eye examination. To assess and diagnose abnormalities in binocular vision. It consists of a series of parallel cylindrical lenses (rods) arranged in a row, usually made of transparent plastic or glass.
DOUBLE MADDOX ROD: Test is a specialized variation of standard Maddox rod test used to assess and quantify the presence of cyclo-deviation; Which is a type of torsional misalignment of eyes. Cyclo-deviation occurs when the eyes rotate around their visual axes leading to a tilting or twisting of images seen by each eye.
HOW IT WORKS: In double Maddox rod test; Two Maddox rods are used, one in front of each eye. Typically, the rods are oriented so that the cylindrical lenses are at the same angle, often at 90 degrees (vertical) Making the light appear as a horizontal line in both eyes.
PROCEDURE: 1. The patient is asked to look at a point light source while both Maddox rods are in place. 2. Each eye will see the light as a line. In the presence of cyclo-deviation the lines seen by each eye will not be parallel to each other. 3. The patient or examiner can rotate the Maddox rods until the lines appear parallel to the patient. 4. The amount of rotation needed to achieve this provides a measure of the degree of cyclo-deviation.
INTERPRETATION: Incyclotorsion: If the lines seen by the eyes are tilted towards the nose, this indicates incyclotorsion. Excyclotorsion: If the lines are tilted towards the temples, it indicates excyclotorsion. The amount of rotation required to make lines parallel is measured in degrees and reflect the extent of torsional misalignment.
CLINICAL RELEVANCE The double Maddox rod test is particularly useful in diagnosing and managing conditions like Fourth nerve palsy (superior oblique muscle palsy ) Other disorders that cause torsional diplopia (double vision)  cyclophoria
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