Archive for May 2016

Reduction of Diabetic Macular Edema in the Untreated Fellow Eye Following Intravitreal Injection of Aflibercept

Abstract

A 59-year-old patient with bilateral worsening diabetic macular edema received intravitreal injection of aflibercept (Eylea; Regeneron, Tarrytown, NY) to the left eye only. On 1-month follow-up, there was noted bilateral improvement of visual acuity and diabetic macular edema on spectral-domain optical coherence tomography imaging, reflecting bilateral effect of unilateral treatment with aflibercept.

Full Paper: Reduction of Diabetic Macular Edema in the Untreated Fellow Eye Following Intravitreal Injection of Aflibercept
(1.69M PDF)

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The Effect of Postoperative Face-Down Positioning and of Long- versus Short-Acting Gas in Macular Hole Surgery

Macular hole surgery was first described in 1991 by Kelly and Wendel1 and Wendel et al.2 Randomized controlled studies subsequently demonstrated the superiority of surgery over conservative management. These studies used perfluoropropane (C3F8) gas as a tamponade agent, rather than the originally described sulfur hexafluoride (SF6), and advised 2 weeks of face-down positioning (FDP).3-5 The surgical technique has been refined over the past 2 decades.6 Recent studies have demonstrated the additional benefit of internal limiting membrane (ILM) peeling at the time of surgery, and hole closure rates in most recent series are greater than 90%.7-10

There remains broad variability in clinical practice and management of this condition, with no consensus regarding the best surgical approach, particularly regarding the choice of intravitreal tamponade and duration of FDP.11-13 Many investigators have reported good results without FDP.14-25 Various mechanisms of action of the gas tamponade are postulated in macular hole surgery,26 with all assuming that bubble-fovea contact is relevant. Therefore, it would seem intuitive that a larger, longer-acting bubble combined with FDP should be beneficial because this would both facilitate and prolong this apposition. However, there is optical coherence tomography evidence that hole closure occurs very early in the postoperative period, often within the first 24 hours.27-29 As such, longer-acting gases and prolonged (or indeed any) FDP may be unnecessary.

By using a noninferiority study design applied to a large prospective (nonrandomized) registry-based cohort, we aimed to observe whether withholding FDP was noninferior to FDP (of any duration) and whether SF6 gas was noninferior to longer-acting gas tamponades. The present article presents the anatomic outcomes.

Full Paper: The Effect of Postoperative Face-Down Positioning and of Long- versus Short-Acting Gas in Macular Hole Surgery
(1.16M PDF)

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