Electroretinographic detection of human brain dopamine response to oral food stimulation.

Objective: The activity of dopamine-dependent retinal signaling can be assessed using electroretinography. Response of this system to oral food stimulation might provide accessible insight into the brain dopamine response to oral stimuli as retinal dopamine concentration is dependent upon mid brain dopamine concentration was postulated.

Design And Methods: Nine individuals had cone ERG (b wave) response to oral food stimulation and oral methylphenidate (MPH) administration measured on separate days, and completed self reported eating behavior questionnaires.

Toxoplasmic papillitis as the initial manifestation of acquired immunodeficiency syndrome.

Toxoplasmic retinochoroiditis has been reported as the initial manifestation of acquired immunodeficiency syndrome (AIDS). Two authors have described two patients with AIDS and toxoplasmic papillitis. We report the case of a patient with a papillitis of unknown origin in whom the workup found systemic toxoplasmosis and subsequent positive human immunodeficiency virus status.

Giant cysts of the conjunctiva following scleral buckling.

Four patients developed giant conjunctival cysts following scleral buckling for retinal detachment. Histologically these cysts showed a core of fibrous tissue lined by stratified, non-keratinizing epithelium and with goblet cells. They probably arose from inadvertent implantation of epithelium during surgery.

Ceftriaxone. A new cephalosporin with aqueous humor levels effective against enterobacteriaceae.

One- or two-gram doses of ceftriaxone were administered intravenously to 30 patients before cataract extraction. With the 1-g dose, mean aqueous humor concentrations of 0.93 and 0.