Placido disk


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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 keratoscope
Placido disk - Synonym(s): Placido da Costa disk
Placido keratoscope - Synonym(s): Placido da Costa disk