ophthalmometer

Noun

(plural ophthalmometers)

(physiology) An instrument for measuring the size of a reflected image on the convex surface of the cornea and lens of the eye, by which their curvature can be ascertained.

Origin

Ancient Greek

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"Ophthalmometer." YourDictionary. LoveToKnow. www.yourdictionary.com/ophthalmometer.

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Ophthalmometer. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/ophthalmometer

SentencesSentence examples

Sentence Examples

Helmholtz in his " Ophthalmometer " has employed Clausen's principle, but arranges the plates so that both move symmetrically in opposite directions with respect to the telescope axis.
He investigated the optical constants of the eye, measured by his invention, the ophthalmometer, the radii of curvature of the crystalline lens for near and far vision, explained the mechanism of accommodation by which the eye can focus within certain limits, discussed the phenomena of colour vision, and gave a luminous account of the movements of the eyeballs so as to secure single vision with two eyes.

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