Spectroelectrochemistry of tris(bipyridyl)silicon(IV): ligand localized reductions with potential electrochromic applications.

Tris(bipyridyl)silicon(iv) was electrochemically reduced in acetonitrile to obtain the UV-vis spectra of its reduced species. Three stable, reversible reduced states (3+, 2+, and 1+) were observed with distinct isosbestic points for each of the redox reactions. The fully oxidized state (4+) is colorless, while the reduced states were green.

Peripapillary nerve fiber layer thickening, telangiectasia, and retinal hemorrhages in wernicke encephalopathy.

A young woman who underwent gastric bypass surgery for morbid obesity had intractable nausea and vomiting for several weeks postoperatively, leading to poor intake and excessive weight loss. In the ninth postoperative week, she became confused and off balance and reported blurred and double vision. Examination disclosed slow saccades, nystagmus, and impaired abduction of both eyes as well as memory loss and ataxia.