ophthalmoscope

noun

1. an instrument for viewing the interior of the eye or examining the retina.

noun

1. an instrument for examining the interior of the eye

n.1857 in English; coined 1852 by German physician and physicist Hermann Ludwig Ferdinand von Helmholtz (1821–1894) from ophthalmo- + -scope. n.

1. An instrument for examining the interior structures of the eye, especially the retina, consisting essentially of a mirror that reflects light into the eye and a central hole through which the eye is examined.