Weerawat Kiddee1, Graham E Trope. 1. *Department of Ophthalmology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand †Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto Western Hospital, University Health Network, Toronto, ON, Canada.
Abstract
PURPOSE: Anterior segment optical coherence tomography (AS-OCT) was used to diagnose Ahmed tube tip patency in patients with opaque corneas after corneal transplantation and tube shortening. MATERIALS AND METHODS: Noncomparative observational case series: 3 consecutive patients with nonvisualized tubes and uncontrolled intraocular pressure after corneal transplantation underwent AS-OCT to determine tube tip patency. RESULTS: In each case, AS-OCT allowed for imaging of the tube position, wall passage, and osteum patency that could not be visualized on gonioscopy. Two of 3 tubes were found to be nonpatent. CONCLUSIONS: High-resolution noncontact cross-sectional AS-OCT images provide information on tube position and patency in the presence of opaque media after corneal transplantation, assisting with clinical decision-making.
PURPOSE: Anterior segment optical coherence tomography (AS-OCT) was used to diagnose Ahmed tube tip patency in patients with opaque corneas after corneal transplantation and tube shortening. MATERIALS AND METHODS: Noncomparative observational case series: 3 consecutive patients with nonvisualized tubes and uncontrolled intraocular pressure after corneal transplantation underwent AS-OCT to determine tube tip patency. RESULTS: In each case, AS-OCT allowed for imaging of the tube position, wall passage, and osteum patency that could not be visualized on gonioscopy. Two of 3 tubes were found to be nonpatent. CONCLUSIONS: High-resolution noncontact cross-sectional AS-OCT images provide information on tube position and patency in the presence of opaque media after corneal transplantation, assisting with clinical decision-making.