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Dexamethasone Implant-associated Vitreous Floaters and Symptom Improvement by YAG Laser Vitreolysis
Journal of Retina 2018;3(2):82-87
Published online November 30, 2018
© 2018 The Korean Retina Society.

Seong Joon Ahn, Ji Hong Kim, Sang Hyup Lee, Byung Ro Lee

Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Korea
Correspondence to: Seong Joon Ahn, MD
Department of Ophthalmology, Hanyang University Seoul Hospital, Hanyang University College of Medicine, 220 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
Tel: +82-2-2290-8570, Fax: +82-2-2291-8517
E-mail: ahnsj81@gmail.com
Byung Ro Lee, MD, PhD
Department of Ophthalmology, Hanyang University Seoul Hospital, Hanyang University College of Medicine, 220 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
Tel: +82-2-2290-8570, Fax: +82-2-2291-8517
E-mail: brlee@hanyang.ac.kr
Received February 12, 2018; Revised May 14, 2018; Accepted May 22, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Purpose: To investigate the incidence of symptomatic floaters following intravitreal dexamethasone implant therapy and to propose implant repositioning using neodymium-doped yttrium aluminum garnet (Nd:YAG) vitreolysis around the implant for treatment.
Case summary: Nd:YAG vitreolysis was performed on the superior vitreous adjacent to the dexamethasone implant in eyes with persistent symptomatic floaters following intravitreal dexamethasone implant injection using 2.0-3.0 mJ energy. Among 172 injections of the dexamethasone implant, 11 (6.4%) resulted in symptomatic floaters at the 1-month visit. Three (1.7%) eyes exhibited persistent and visually significant vitreous floaters, upon which Nd:YAG vitreolysis was performed. Immediately after the superior vitreolysis adjacent to the implant, the implants were repositioned to the inferior vitreous. Floater symptoms were resolved in all patients without any damage to the implant or other ocular complications.
Conclusions: Superior vitreolysis adjacent to dexamethasone implants may be an effective and safe treatment for persistent symptomatic floaters following intravitreal dexamethasone implant injection.
Keywords : Dexamethasone implant; Floaters; Nd:YAG; Vitreolysis


November 2018, 3 (2)
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