A 28-year-old woman presented to the department of ophthalmology at Lahey Hospital and Medical Center with 2 months of headaches and progressive visual changes in both eyes.Two months before ...

Eye - Syphilitic acute posterior placoid chorioretinitis in nonimmunocompromised patients. ... with fine keratic precipitates+cells in the anterior chamber and normal intraocular pressures.

Close-up view of tiny placoid scales of the iconic extinct megatooth shark, Otodus megalodon, compared to a tip of a 0.5-mm mechanical pencil lead on the bottom right corner.