Before revision: Development A Medmont E300 topographer The corneal topograph owes its heritage to the Portuguese ophthalmologist Antonio Placido, who, in 1880, viewed a painted disk (Placido's disk) of alternating black and white rings reflected in the cornea.
After revision: , using a bowl of illuminated ringsDevelopment A Medmont E300 topographer The corneal topograph owes its heritage to the Portuguese ophthalmologist Antonio Placido, who, in 1880, viewed a painted disk (Placido's disk) of alternating black and white rings reflected in the cornea.