title: Retinal photoreceptor focal disruption secondary to accidental Nd:YAG laser exposure.
abstract: Retinal injuries caused by accidental laser exposure include retinal or vitreous hemorrhages, macular holes and edema. We describe the imaging of a bilateral macular lesion secondary to accidental Nd:YAG laser exposure. Observational case report. We performed color photography, fluorescein angiography and autofluorescence (AF) with a scanning laser ophthalmoscope, as well as time-domain and spectral-domain optical coherence tomography (OCT). After accidental exposure to a 1064 nm Nd:YAG laser, a patient experienced blurred vision in the left eye (LE) with visual acuity of 20/60. Color, fluorescein angiography and OCT imaging showed a retinal hemorrhage in the foveal area of the left eye and in the inferomacular region of the asymptomatic right eye. Steroid therapy was then administered, and 5 days later there was rapid improvement with progressive re-absorption of the hemorrhages and functional recovery. At 6 month follow-up, visual acuity was 20/20 in both eyes with unremarkable biomicroscopy, except for focal foveal retinal pigment epithelium (RPE) atrophy in the LE. In comparison to previous hemorrhages, OCT could visualize focal disruption of the photoreceptor IS/OS junction in both eyes. Due to different macular pigment distribution and lesion localization, 787 nm near-infrared AF depicted a small hypofluorescent spot in both eyes, whilst at 488 nm AF a black spot became evident in the right eye only. Despite the re-absorption of foveal hemorrhage and the functional recovery, AF and OCT imaging highlighted the persistence of small focal disruptions of the photoreceptor outer segments and RPE.
authors: Ospedale Fatebenefratelli-Oftalmico, Milano, Italy. dottpaolomilani@hotmail.com
authors: Paolo
authors: P
authors: Milani
authors: Luisa
authors: L
authors: Pierro
authors: Alfredo
authors: A
authors: Pece
authors: Valerio
authors: V
authors: Marino
authors: Antonio
authors: A
authors: Scialdone
mesh_terms: D000062:Accidents, Occupational; D000328:Adult; D005451:Fluorescein Angiography; D005500:Follow-Up Studies; D006801:Humans; D053844:Lasers, Solid-State / Q000009:adverse effects*; D060051:Occupational Injuries / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D009887:Ophthalmoscopy; D020419:Photoreceptor Cells, Vertebrate / Q000473:pathology*; D011241:Prednisone / Q000008:administration & dosage; D012160:Retina / Q000293:injuries*; D012166:Retinal Hemorrhage / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D055213:Retinal Pigment Epithelium / Q000473:pathology*; D041623:Tomography, Optical Coherence; D014792:Visual Acuity / Q000502:physiology
chemical_list: D011241:Prednisone