ophthalmoscopy vs scrutiny

ophthalmoscopy and scrutiny both are nouns.

Word	Noun	Adjective	Verb	Adverb
ophthalmoscopy	Yes	No	No	No
scrutiny	Yes	No	No	No

As nouns, scrutiny is a hypernym of ophthalmoscopy; that is, scrutiny is a word with a broader meaning than ophthalmoscopy:

ophthalmoscopy: examination of the interior of an eye using an ophthalmoscope
scrutiny: the act of examining something closely (as for mistakes)

Other hypernyms of ophthalmoscopy include examination.

ophthalmoscopy (noun)	scrutiny (noun)
examination of the interior of an eye using an ophthalmoscope	the act of examining something closely (as for mistakes)
	a prolonged intense look