Glaucoma tube imaging using anterior segment optical coherence tomography in patients with opaque cornea.
OBJECTIVE
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.


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.
*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.
Weerawat
W
Kiddee
Graham E
GE
Trope
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000869:Anterior Eye Segment / Q000473:pathology*; D003318:Corneal Opacity / Q000150:complications*; D016039:Corneal Transplantation; D005260:Female; D020327:Glaucoma Drainage Implants; D015812:Glaucoma, Angle-Closure / Q000601:surgery; D006083:Graft Occlusion, Vascular / Q000175:diagnosis*; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D011475:Prosthesis Failure; D019919:Prosthesis Implantation; D041623:Tomography, Optical Coherence / Q000379:methods*