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William E. Sponsel, MD
He is director of clinical research, department of ophthalmology, the University of Texas Health Science Center, San Antonio.
Adding electroretinography: Technology to clinical utility
Pattern electroretinography (PERG) and visually evoked potential (VEP) tests can objectively evaluate the function of axion and retinal ganglion cells. These test results can add another component in successfully treating patients with cataract and/or glaucoma.
Inhaled cocaine use linked to nonischemic vascular event
A 42-year-old Hispanic male presented complaining of decreased vision in his left eye. He noted that his vision in that eye had decreased suddenly three weeks earlier. The patient had low hyperopia. His medical, surgical, and family histories were unremarkable. He was using no medications and had no known drug allergies. Although he initially reported no significant social history, after more extensive questioning he admitted to the occasional inhalational use of cocaine. His most recent use was on the day prior to the onset of his visual disturbance.


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