- Plácido's disk
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/plah"si dohz'/, Ophthalm.a device marked with concentric black rings, used to detect corneal irregularities.[after A. Plácido da Costa (1848-1916), Portuguese ophthalmologist, who devised it]
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Universalium. 2010.
Plácido's disk
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Plácido's disk — /plah si dohz /, Ophthalm. a device marked with concentric black rings, used to detect corneal irregularities. [after A. Plácido da Costa (1848 1916), Portuguese ophthalmologist, who devised it] … Useful english dictionary
Placido disk — Pla·ci·do disk (plahґse do) [Antonio Placido da Costa, Portuguese ophthalmologist, 1848–1916] see under disk … Medical dictionary
disk — 1. A round, flat plate; any approximately flat circular structure. 2. SYN: lamella (2). 3. In dentistry, a circular piece of thin paper or other material, coated with an abrasive substance, used for cutting and polishing tee … Medical dictionary
Placido da Costa — Antonio, Portuguese ophthalmologist, 1848–1916. See P. disk … Medical dictionary
disco de Plácido — Eng. Placido s disk Ver queratoscopio … Diccionario de oftalmología
Placido disk — keratoscope … Medical dictionary
Corneal topography — Intervention A corneal topogram of an eye affected by keratoconus. Blue shows the flattest areas, and red the steepest. MeSH … Wikipedia
Keratoscope — A keratoscope, sometimes known as Placido s disk , is an ophthalmic instrument for assessing the shape of the anterior surface of the cornea. A series of concentric rings are projected onto the cornea and their reflection viewed by the examiner… … Wikipedia
Keratoconus — Classification and external resources The conical cornea that is characteristic of keratoconus ICD 10 H … Wikipedia
corneal reflex — 1. Physiol. the closing of the eyelids induced by touching the cornea lightly. 2. Ophthalm. the reflection of a keratoscope, as Placido s disk, on the surface of the cornea. * * * … Universalium
