Bible Dictionaries
Ophthalmoscope
Webster's Dictionary
(n.) An instrument for viewing the interior of the eye, particularly the retina. Light is thrown into the eye by a mirror (usually concave) and the interior is then examined with or without the aid of a lens.
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Bibliography Information
Webster, Noah. Entry for 'Ophthalmoscope'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​o/ophthalmoscope.html. 1828.