RESUMEN
PURPOSE: To report two cases of retinal vascular occlusion and associated subconjunctival hemorrhage in needle optic nerve injury during local bulbar anesthesia. METHODS: Surgical records of these two subjects who presented with acute vision loss after cataract extraction were studied, and systemic workup and ocular imaging were carried out to establish the cause. RESULTS: Computerized tomography showed evidence of optic nerve injury. CONCLUSION: Subconjunctival hemorrhage could be an associated clinical finding in hypodermic needle injury-related retinal vascular occlusion during ocular anesthesia.
Asunto(s)
Anestesia Local/efectos adversos , Ceguera/etiología , Hemorragia del Ojo/complicaciones , Lesiones Oculares/complicaciones , Agujas/efectos adversos , Disco Óptico/lesiones , Hemorragia Posoperatoria/complicaciones , Anestesia Local/instrumentación , Anestésicos Locales/administración & dosificación , Ceguera/diagnóstico , Conjuntiva/irrigación sanguínea , Hemorragia del Ojo/diagnóstico , Lesiones Oculares/diagnóstico , Humanos , Inyecciones Intraoculares/efectos adversos , Masculino , Persona de Mediana Edad , Disco Óptico/diagnóstico por imagen , Hemorragia Posoperatoria/diagnóstico , Tomografía Computarizada por Rayos X , Agudeza VisualRESUMEN
A retrobulbar block is a regional anesthetic nerve block in the retrobulbar space. Optic neuropathy following retrobulbar injection is a well-recognized and rare complication of the procedure with an unknown incidence. This article reviews the relevant literature regarding vision loss following this procedure. Mechanisms of injury to the optic nerve as well as methods that can be employed to minimize the risk of optic neuropathy will be explored, including alternatives to retrobulbar anesthesia.