title: Vision loss with bending over.
abstract: A 66-year-old African American man presented with episodic transient visual loss triggered by bending forward. The initial examination did not suggest intraocular pathology and the patient was nearly sent for vascular evaluation given his cardiovascular risk factors. Fundus photographs taken during an episode of visual loss suggested an intraocular process, however. Gonioscopy revealed a microhyphema causing a "snow globe" effect in the anterior chamber, most likely related to recent bleb manipulation in the affected eye.
authors.affiliation: Department of Ophthalmology, Columbia University, New York, New York, USA.
authors.forename: Michele D
authors.initials: MD
authors.lastname: Lee
authors.affiliation: Department of Ophthalmology, Columbia University, New York, New York, USA. Electronic address: Odel1@aol.com.
authors.forename: Jeffrey G
authors.initials: JG
authors.lastname: Odel
authors.affiliation: Department of Ophthalmology, Columbia University, New York, New York, USA.
authors.forename: Danielle S
authors.initials: DS
authors.lastname: Rudich
authors.affiliation: Einhorn Clinical Research Center, New York Eye and Ear Infirmary of Mount Sinai School of Medicine, New York, New York, USA.
authors.forename: Robert
authors.initials: R
authors.lastname: Ritch
authors.affiliation: Department of Neuro-Ophthalmology, Wills Eye Hospital, Philadelphia, Pennsylvania, USA; Departments of Neurology and Ophthalmology, Thomas Jefferson University School of Medicine, Philadelphia, Pennsylvania, USA.
authors.forename: Mark L
authors.initials: ML
authors.lastname: Moster
mesh_terms: D000368:Aged; D020757:Amaurosis Fugax / Q000175:diagnosis* / Q000209:etiology; D000869:Anterior Eye Segment / Q000473:pathology*; D002318:Cardiovascular Diseases / Q000150:complications / Q000175:diagnosis; D018463:Filtering Surgery / Q000009:adverse effects; D005901:Glaucoma / Q000150:complications / Q000175:diagnosis; D006068:Gonioscopy; D006801:Humans; D006988:Hyphema / Q000175:diagnosis* / Q000209:etiology; D007429:Intraocular Pressure; D008297:Male; D011187:Posture; D012307:Risk Factors
keywords: amaurosis fugax; microhyphema; snow globe effect; transient vision loss; uveitis-glaucoma-hyphema syndrome