Placido disk


Placido disk

(plă-sē′dōz) [Antonio Placido, Portuguese ophthalmologist, 1848–1916] A disk marked with concentric black and white circles used in determining the amount and character of corneal irregularity.

Placido da Costa,

Antonio, Portuguese ophthalmologist, 1848-1916. Placido da Costa disk - an instrument marked with lines or circles, used to observe the corneal reflex. Synonym(s): Placido disk; Placido keratoscopePlacido disk - Synonym(s): Placido da Costa diskPlacido keratoscope - Synonym(s): Placido da Costa disk