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Khin Kilgore, Feng Wang, Nancy Diehl, Cheryl Khanna; Diplopia in Baerveldt 250, Baerveldt 350, and Ahmed FP7 Patients. Invest. Ophthalmol. Vis. Sci. 2018;59(9):2071.
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© ARVO (1962-2015); The Authors (2016-present)
Diplopia has been reported as a complication of glaucoma drainage devices (GDD), but a prospective study assessing diplopia in the smaller plate glaucoma drainage devices using a standardized instrument to detect diplopia had not been performed. The purpose of this prospective study was to determine the incidence of diplopia in patients who receive Baerveldt 250, Baerveldt 350, or Ahmed FP7 GDDs.
Adult surgical glaucoma patients who had received, or would be receiving, Baerveldt 250, Baerveldt 350, or Ahmed FP7 GDDs, and medically-treated controls, were prospectively and consecutively enrolled. For the GDD patients, the Diplopia Questionnaire (DQ) was conducted prior to surgery and ≥30 days after surgery. Each control completed the survey upon enrollment. Diplopia was defined as “Sometimes,” “Often,” or “Always” in distance straight ahead and/or reading positions on the DQ.
A total of 57 eyes in 53 patients, 45 eyes with GDD, and 12 controls were enrolled. Of the 45 eyes with GDD, 15 were enrolled pre-operatively, 30 post-operatively. One patient had diplopia pre-operatively. No patients reported diplopia after receiving Baerveldt 250. Diplopia was reported post-operatively in 4/16 (25.0%, p-value=0.36) Baerveldt 350 patients (2 attributable to GDD), 2/7 (28.6%, p-value=0.52) Ahmed FP7 patients (1 attributable to GDD), and 1/12 (8.3%) controls, with an overall diplopia rate of 8/53 (15.1%).
Although there was not a significant difference in post-operative diplopia among patients with Baerveldt 250, Baerveldt 350, or Ahmed FP7 in this ongoing study, no patients with 250 Baerveldt, a small low-profile GDD, had post-operative diplopia, which warrants further investigation.
This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.
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