An instrument for investigating, diagnosing, and evaluating refractive errors of the eye by projection of a beam of light into the eye, and observation of the movement of the illuminated area of the retina surface, and of the refraction by the eye of the emergent rays.

Our medical equipment dictionary is provided for use by medical students, nurses and other healthcare professionals and is for general, educational purposes only. If you would like to suggest an addition or update to the definition for temporary intracanalicular collagen implant, please contact us.

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