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Retinal photoxicity related to xenon light
Author(s) -
GARCIA M,
CASTRO J
Publication year - 2011
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2011.359.x
Subject(s) - medicine , vitrectomy , macular hole , ophthalmology , retinal , pars plana , indocyanine green , visual acuity , retinal pigment epithelium , fundus (uterus) , fluorescein angiography , surgery
Purpose To describe the anatomical and functional changes observed after surgery, in three patients with idiopathic macular hole, who developed retinal toxicity related to Xenon light. Methods Three eyes (3 patients), two females and one male, underwent three‐port pars plana vitrectomy with internal limiting membrane (ILM) peeling and fluid‐gas exchange. In all cases we used a new Xenon light during surgery with an intensity power ranging between 50 and 75%. In order to facilitate ILM peeling, Indocyanine Green (ICG) (0.05%) was used in one case and Brilliant Blue G (BBG) in two cases. Full clinical examination, with determined Best Corrected Visual Acuity (BCVA), fundus examination, retinography and Optical Coherence Tomography (OCT), were performed prior and after surgery. Fluorescein angiography (FA) was also performed in all cases after surgery. Results One week after surgery, the macular hole was closed in all cases and it remained stable during follow‐up. One month later, BCVA was lower than before surgery and we observed changes in retinal pigment epithelium at the posterior pole. These changes were more intense three months later: retinal atrophic areas combined with patches of hyperplasia of the RPE in the macular area. The FA confirmed the diagnosis of retinal phototoxicity. Similar changes were observed at six months, one, two and three years later in all cases with a final BCVA lower than 1/10 in all eyes. Conclusion The light we use to perform vitrectomy may cause photoxicity. As we used two different dyes during surgery, and previously we had operated more than two hundred cases of macular hole with ICG and halogen light without problem, we postulate that changes observed in these cases could be due to Xenon light, independently of the use of different dyes.Commercial interest