title: Macular phototoxicity caused by fiberoptic endoillumination during pars plana vitrectomy.
abstract: Three cases of retinal phototoxicity were caused by light from the endoilluminator used in vitrectomy. Preoperative clinical examination, color photography, and fluorescein angiography in all three cases failed to disclose retinal pigment epithelial changes. Postoperative clinical findings, photographs, and fluorescein angiograms are highly suggestive of the presence of retinal phototoxicity. The characteristics of these lesions and surgical conditions implicate the endoilluminator as the source of photic injury. The macular lesions were noted within one week of the surgical procedure, measured between 2 and 5 disk diameters in size, involved the fovea in two eyes, and resulted in marked decrease in visual acuity in two of three eyes, with persistence in one eye. Initially, whitening of the outer retina was present, but was replaced by pigmentary mottling at the level of the retinal pigment epithelium within a few weeks. Preventive measures to avoid macular phototoxicity associated with vitrectomy are discussed.
authors.affiliation: Retina Division, Jules Stein Eye Institute, Los Angeles, CA 90024-7007.
authors.forename: M
authors.initials: M
authors.lastname: Michels
authors.forename: H
authors.initials: H
authors.lastname: Lewis
authors.forename: G W
authors.initials: GW
authors.lastname: Abrams
authors.forename: D P
authors.initials: DP
authors.lastname: Han
authors.forename: W F
authors.initials: WF
authors.lastname: Mieler
authors.forename: J
authors.initials: J
authors.lastname: Neitz
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005336:Fiber Optic Technology; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D008029:Lighting / Q000009:adverse effects*; D008297:Male; D011183:Postoperative Complications / Q000209:etiology*; D012163:Retinal Detachment / Q000601:surgery; D012164:Retinal Diseases / Q000209:etiology* / Q000473:pathology; D014792:Visual Acuity; D014821:Vitrectomy