High-Resolution Orbital MRI in Strabismus and Myopia: A Fascinating Journey of Discovery 

Zia ChaudhuriIndia Speaker High-Resolution Orbital MRI in strabismus and myopia: A Fascinating Journey of DiscoveryMagnetic resonance imaging (MRI) provides in vivo visualization of the static and dynamic configuration of extraocular muscles (EOM) and their connective tissues, aiding delineation of their anatomy and physiological functions. Defining the normal is of relevance because it aids extrapolation of the abnormal, which has translational relevance for the appropriate diagnosis and management of strabismus. This evaluation has also been found to be of high informative relevance in myopia, which has assumed pandemic stature in the east Asian population and now, also in the south Asian population. In addition, high-resolution surface coil orbital MRI techniques with suitable positioning of the eyeballs in different target-controlled positions aids knowledge of the actions of EOMs in different positions of conjugate gaze, as well as during convergence at near. Dr Chaudhuri was trained in the acquisition and analysis of these high-resolution orbital images in strabismus under the direct supervision of Prof Joseph Demer at JSEI, UCLA and has subsequently continued this research in India, thus making her an investigator from both sides of the ocean, so to say, and in different ethnic populations. This presentation will specifically provide an overview of high-resolution, surface-coil orbital MRI of the EOMs and ocular adnexa with due emphasis on congenital and acquired strabismus and myopia, including the enigmatic condition of myopic anisometropia, where despite similar genetics and environment, the two eyes grow asymmetrically.