Photopsias - University of Iowa
2019年6月24日 · The following tutorial discusses the various sources of photopsia: vitreoretinal traction, ocular migraines, age-related macular degeneration, diabetes, cerebral blood flow, visual hallucinations, cancer associated retinopathy, entoptic phenomenon, phosphenes, and lens associated dysphotopsias.
Ocular Migraine Phenomena - University of Iowa
2016年4月15日 · Ocular Migraine Phenomena Photopsia (18 sec) This is an artist's rendering of photopsia. The video was created for UIHC Department of Ophthalmology and Visual Sciences by Juan Carlos Nieto, Thomas A. Weingeist, PhD, MD, and Michael Abramoff, MD, PhD.
Atlas Entry - Multiple evanescent white dot syndrome (MEWDS)
A 25-year-old male presented with 3 days of painless scotoma and photopsia in the left eye. Amsler grid testing revealed an enlarged blindspot. Fundus examination showed multiple subretintal white spots. Fluorescein angiography showed classic punctate hyperfluorescence in a wreath-like pattern in the left eye (photo at bottom of page).
Atlas Entry - Subconjunctival Hemorrhage - University of Iowa
A subconjunctival hemorrhage occurs due to ruptured blood vessels in the conjunctiva. The blood accumulates between the sclera and the conjunctiva and appears as a red spot on the white of the eye.
Posterior capsular folds creating a Maddox rod effect following ...
2014年8月7日 · References. Maddox EE. A new test for heterophoria (Maddox rod). Ophthalmic Rev 1890; 9:129-133. Holladay JT, Bishop JE, Lewis JW.
Atlas Entry - Purtscher Retinopathy - University of Iowa
Contributor: Jesse Vislisel, MD Photographer: Antoinette Venckus, CRA; Stefani Karakas, CRA. Purtscher retinopathy is the appearance of cotton wool spots, hemorrhages, and retinal edema located predominantly around the optic disc.
Multiple Evanescent White Dot Syndrome (MEWDS): - University …
2005年4月8日 · Chief Complaint: One week duration of central scotoma, OD. History of Presenting Illness: The patient is an adult white female in her mid-twenties who experienced sudden awareness of a painless, central scotoma in her right eye while reading one week ago.
Topiramate-Induced Angle Closure - University of Iowa
2019年4月9日 · Epidemiology and Pathophysiology. Occurs in three out of 100,000 patients on topiramate; Involves choroidal swelling that increases retrolenticular pressure to push the lens-iris diaphragm anteriorly
Retinal Detachment: From One Medical Student to Another
2013年10月15日 · Retinal detachment is an important cause of decreased visual acuity and blindness. It is one of the most common ocular emergencies today, most frequently affecting the middle aged and elderly.
Vitreous Syneresis: An Impending Posterior Vitreous Detachment …
2014年11月17日 · Chief Complaint. New flashing lights and floating "spots." History of Present Illness. A 60 year-old female presented to the eye clinic with flashing lights and new floaters in the left eye for the past four days.