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Related to Placido disc: retinoscopy, Placido disk
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Noun1.keratoscope - medical instrument to examine the cornea in order to detect irregularities in its anterior surface
medical instrument - instrument used in the practice of medicine


n. queratoscopio, instrumento para examinar la córnea.
References in periodicals archive ?
One of the most common methods is Placido disc imaging.
Although placido disc technology can provide great detail on the anterior corneal surface, it is limited by not being able to measure corneal thickness or assess the posterior corneal surface in the same way that the anterior surface is analysed.
a) Blue filter for sodium fluorescein assessment of the tear film b) Placido disc filter for assessment of corneal shape c) A filter for assessment of tear osmolarity d) Grid filter for measurement of non-invasive tear break-up time (NIBUT)