Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

Sign Up for a Free Account For information on discounts, see Plans & Pricing

  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

  • Listen to MedLink on the go with Audio versions of each article.

Toxoplasmosis 1

In the active form of toxoplasmosis there is a granulomatous reaction in the choroid that appears as a white elevated lesion surrounded by an inflammatory cell reaction in the retina and vitreous, giving rise to the description of the ophthalmoscopic presentation as a "headlight in the fog." (Contributed by Dr. James Walters.)